{"title":"Distributor Caps \u0026 Rotors","description":null,"products":[{"product_id":"marine-distributor-for-gm-l6-194-230-250-292-cid-inline-six-engines-conventional-rotation-mpn-118-26112-1","title":"Sierra Distributor 18-26112-1, Replaces 980902 and Mallory YL512CV, for Most Ford 302 CID V-8 Engines","description":"\u003cp\u003eThe Sierra 18-26112-1 is a marine ignition distributor built for most Ford 302 CID V-8 marine engines. As the timing hub of the ignition system, the distributor routes high-voltage spark from the coil to each cylinder in the correct firing order, so a worn, corroded, or intermittently firing distributor directly translates into rough idle, misfires, hard starting, or a no-start condition. Replacing it with the Sierra 18-26112-1 restores factory-correct ignition timing and spark distribution for the engine platform it is designed for.\u003c\/p\u003e\u003cp\u003eThis distributor is sold as a direct replacement unit and is cross-referenced to the OEM and Mallory part numbers it supersedes, making it straightforward to confirm you are ordering the correct replacement for your Ford 302 CID V-8 marine engine. It weighs 4 pounds as shipped.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-26112-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e Most Ford 302 CID V-8 engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282361952\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMost Ford 302 CID V-8 engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e980902\u003c\/li\u003e\n\u003cli\u003eMallory YL512CV\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engine does the Sierra 18-26112-1 distributor fit?\u003c\/strong\u003e The Sierra 18-26112-1 is built for most Ford 302 CID V-8 marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM and aftermarket part numbers does 18-26112-1 replace?\u003c\/strong\u003e It replaces OEM number 980902 and Mallory number YL512CV, so it can be used as a direct swap for either of those part numbers on a compatible Ford 302 CID V-8 engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this distributor weigh?\u003c\/strong\u003e The Sierra 18-26112-1 distributor weighs 4 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-26112-1 a new or remanufactured unit?\u003c\/strong\u003e The Sierra 18-26112-1 is sold as a complete replacement distributor, not a repair kit or individual component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-26112-1 include a cap and rotor?\u003c\/strong\u003e The 18-26112-1 is the distributor assembly itself; specific accessory components should be confirmed against the part number before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the Mallory YL512CV distributor instead of the Sierra 18-26112-1?\u003c\/strong\u003e Yes, the Sierra 18-26112-1 is the direct cross-reference for the Mallory YL512CV on most Ford 302 CID V-8 marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-26112-1 fit a GM V-8 marine engine?\u003c\/strong\u003e No, the Sierra 18-26112-1 is designated for most Ford 302 CID V-8 engines, not GM engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate my distributor needs replacement?\u003c\/strong\u003e Rough idle, misfiring, hard starting, or a no-start condition on a Ford 302 CID V-8 marine engine can indicate a failing distributor like the one the Sierra 18-26112-1 replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-26112-1 distributor?\u003c\/strong\u003e The UPC for the Sierra 18-26112-1 distributor is 808282361952.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-26112-1 compatible with the OEM part numbered 980902?\u003c\/strong\u003e Yes, 18-26112-1 directly replaces OEM part 980902 on most Ford 302 CID V-8 marine engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988107800795,"sku":"SIE-18-26112-1","price":314.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-26112-1__87550.1722494352.500.750.jpg?v=1785329155"},{"product_id":"distributor-cap-for-pleasurecraft-mp-5-0l-5-7l-marine-engines-2002-2005-replaces-ra108009-sierra-18-5244-2","title":"Sierra Distributor Cap 18-5244-2, Replaces RA108009, Fits MP 5.0L and 5.7L (2002-05)","description":"\u003cp\u003eThe Sierra 18-5244-2 is a replacement distributor cap engineered for MP 5.0L and 5.7L engine models (2002-05). Molded from durable plastic in black, the cap uses a twist-on closure design that seats securely over the distributor housing to maintain a reliable ignition connection. As the distributor cap wears, cracks, or develops carbon tracking, spark distribution to the cylinders becomes inconsistent, leading to misfires, hard starting, or rough idle -- installing a fresh 18-5244-2 restores proper high-voltage routing from the ignition coil to each spark plug wire terminal. This cap is a direct equivalent for OEM number RA108009, so it installs in place of the original part without modification. It is built to the same fit and function as the original equipment cap it replaces, making it a straightforward swap during a routine tune-up or ignition system service. Measuring 3.5 x 7 x 4.5 inches, the cap is sized to match the factory distributor assembly on applicable MP 5.0L and 5.7L engines. Keeping the distributor cap in good condition is a core part of marine engine ignition maintenance, since moisture intrusion and vibration in a marine environment accelerate wear on this component compared to automotive use.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5244-2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 3.5 x 7 x 4.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.8 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Models MP 5.0L and 5.7L (2002-05)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces:\u003c\/strong\u003e RA108009\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eModels MP 5.0L and 5.7L (2002-05)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eRA108009\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5244-2 distributor cap fit?\u003c\/strong\u003e The 18-5244-2 is designed for MP 5.0L and 5.7L engine models (2002-05), matching the distributor assembly used on those applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5244-2 a direct replacement for RA108009?\u003c\/strong\u003e Yes, the Sierra 18-5244-2 replaces OEM number RA108009 and installs as a direct equivalent on MP 5.0L and 5.7L engines (2002-05).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the distributor cap made from?\u003c\/strong\u003e The 18-5244-2 distributor cap is made from black plastic with a twist-on closure that seats securely over the distributor housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5244-2 distributor cap?\u003c\/strong\u003e This Sierra distributor cap measures 3.5 x 7 x 4.5 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5244-2 distributor cap weigh?\u003c\/strong\u003e The 18-5244-2 weighs 0.8 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor?\u003c\/strong\u003e A twist-on closure is used, so the 18-5244-2 turns and locks into place over the distributor body rather than requiring separate fasteners.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate the distributor cap needs replacement?\u003c\/strong\u003e Misfires, hard starting, or rough idle on an engine running MP 5.0L or 5.7L can indicate the distributor cap is cracked, worn, or carbon-tracked and due for replacement with a part like the 18-5244-2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order this part?\u003c\/strong\u003e The 18-5244-2 order includes one distributor cap; it does not include a rotor or wires unless listed separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or a generic aftermarket cap?\u003c\/strong\u003e The 18-5244-2 is a Sierra-branded distributor cap manufactured to fit MP 5.0L and 5.7L engines (2002-05) as a replacement for RA108009.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this cap be used for routine tune-up service?\u003c\/strong\u003e Yes, replacing the distributor cap with the 18-5244-2 during a tune-up helps maintain consistent spark distribution on MP 5.0L and 5.7L engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988202369243,"sku":"SIE-18-5244-2","price":80.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5244__24386.1692192272.500.750.jpg?v=1785188012"},{"product_id":"sierra-18-5243-distributor-cap-for-mercruiser-4-3l-v-6-alpha-bravo-sterndrive-replaces-oem-888731-898253t23","title":"Sierra Distributor Cap 18-5243, Replaces 3859019, for Delco HVS V-6 Distributors","description":"\u003cp\u003eThe Sierra 18-5243 is a replacement distributor cap engineered for engines equipped with a Delco HVS distributor with an extended bracket, specifically Delco HVS V-6 distributors. It is a direct fit for the ignition system, restoring a proper seal against moisture and delivering reliable spark distribution to keep the engine firing correctly on every cylinder. The cap is finished in white with a twist-on closure for a secure, tool-free installation and removal during routine maintenance.\u003c\/p\u003e\u003cp\u003eThis distributor cap is a wear item that should be inspected and replaced when it shows cracking, carbon tracking, corrosion at the terminals, or a compromised twist-on seal, all of which can cause misfires, hard starting, or rough idle. Installing the correct Sierra 18-5243 cap for a Delco HVS V-6 distributor with extended bracket ensures the terminals and cap geometry line up properly with the rotor and ignition wiring, so the ignition system performs as designed.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5243\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 3.6 x 7.1 x 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.68 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282167547\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Engines equipped with Delco HVS distributor with extended bracket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 3859019\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eDelco HVS V-6 Distributors (engines equipped with Delco HVS distributor with extended bracket)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e3859019\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5243 distributor cap fit?\u003c\/strong\u003e The Sierra 18-5243 fits engines equipped with a Delco HVS distributor with an extended bracket, specifically Delco HVS V-6 distributors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5243 the same cap used on V-8 Delco HVS distributors?\u003c\/strong\u003e No, the 18-5243 is built for Delco HVS V-6 distributors; a V-8 Delco HVS distributor uses a separate cap part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM number does the Sierra 18-5243 replace?\u003c\/strong\u003e It replaces OEM number 3859019.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-5243 distributor cap?\u003c\/strong\u003e It is finished in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the Sierra 18-5243 secured to the distributor?\u003c\/strong\u003e It uses a twist-on closure, allowing it to be installed and removed without additional tools.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-5243?\u003c\/strong\u003e The cap measures 3.6 x 7.1 x 5 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5243 distributor cap weigh?\u003c\/strong\u003e It weighs 0.68 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many caps come in a Sierra 18-5243 purchase?\u003c\/strong\u003e One distributor cap (unit count of 1) is included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the Sierra 18-5243 distributor cap be replaced?\u003c\/strong\u003e Replace the 18-5243 when the cap shows cracking, carbon tracking, terminal corrosion, or a worn twist-on seal, since any of these can cause misfires or hard starting on a Delco HVS V-6 distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5243 a genuine aftermarket replacement or a used OEM part?\u003c\/strong\u003e The 18-5243 is a new aftermarket distributor cap manufactured by Sierra as a direct replacement for OEM number 3859019.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988202762459,"sku":"SIE-18-5243","price":74.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5243_lg__64189.1558127563.500.750.jpg?v=1785188376"},{"product_id":"sierra-18-5245-distributor-rotor-for-delco-hvs-distributors-replaces-pleasurecraft-r103011-mercury-884790-fits-mp-5-0l-5-7l-2002-2005","title":"Sierra Rotor 18-5245 for MerCruiser 4.3L\/5.0L\/5.7L\/6.2L MPI Engines 2001 and Newer, Replaces Mercury Marine 884790","description":"\u003cp\u003eThe Sierra 18-5245 is a distributor rotor engineered as a direct replacement for Delco HVS distributor systems used on MerCruiser MCM\/MIE 4.3L, 5.0L, 5.7L, and 6.2L MPI engines built 2001 and newer with ECM 555 serial numbers 0M300000 and up. It is also correct for PleasureCraft MP 5.0L and 5.7L engine models from 2002-05. The rotor is a single-item component sold individually and mounts inside the distributor cap, transferring spark from the coil to the correct spark plug wire terminal in firing order as the distributor shaft rotates.\u003c\/p\u003e\u003cp\u003eThis is an OEM-equivalent part, cross-referencing to Mercury Marine 884790 and PleasureCraft R103011, so it installs and performs the same as the factory original without modification. Because ignition timing accuracy depends on a properly seated, correctly conducting rotor, replacing a worn, cracked, or corroded rotor at tune-up intervals helps maintain reliable spark delivery and smooth engine running. At 0.11 pounds, it is a compact, easy-to-handle service part suited for routine tune-up or distributor cap-and-rotor replacement jobs.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5245\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributor Type:\u003c\/strong\u003e Delco HVS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Mercury Marine 884790, PleasureCraft R103011\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282167561\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.11 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser MCM\/MIE 4.3L, 5.0L, 5.7L \u0026amp; 6.2L MPI engines with ECM 555 S\/N 0M300000 \u0026amp; up, 2001 and newer\u003c\/li\u003e\n\u003cli\u003ePleasureCraft MP 5.0L and 5.7L models, 2002-05\u003c\/li\u003e\n\u003cli\u003eDelco HVS distributors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 884790\u003c\/li\u003e\n\u003cli\u003ePleasureCraft R103011\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5245 rotor fit?\u003c\/strong\u003e The Sierra 18-5245 fits MerCruiser MCM\/MIE 4.3L, 5.0L, 5.7L, and 6.2L MPI engines built 2001 and newer with ECM 555 serial numbers 0M300000 and up, as well as PleasureCraft MP 5.0L and 5.7L engine models from 2002-05.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5245 rotor an OEM part or an aftermarket equivalent?\u003c\/strong\u003e It is an aftermarket rotor built as a direct equivalent to Mercury Marine 884790 and PleasureCraft R103011, so it fits and functions the same as the original factory rotor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this rotor cross-reference to Mercury Marine 884790?\u003c\/strong\u003e Yes, part number 18-5245 is the correct cross-reference for Mercury Marine 884790.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5245 compatible with PleasureCraft R103011?\u003c\/strong\u003e Yes, the 18-5245 rotor is a direct match for PleasureCraft part R103011 on applicable MP 5.0L and 5.7L engines from 2002-05.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat distributor type does this rotor work with?\u003c\/strong\u003e The 18-5245 is designed for Delco HVS distributors used on the listed MerCruiser and PleasureCraft engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5245 rotor weigh?\u003c\/strong\u003e The Sierra 18-5245 rotor weighs 0.11 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many rotors come in a package?\u003c\/strong\u003e The 18-5245 is sold as a single item, one rotor per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should a distributor rotor like the 18-5245 be replaced?\u003c\/strong\u003e A distributor rotor should be replaced when it shows wear, cracking, or corrosion on the contact tip, typically during a tune-up alongside the distributor cap, to maintain consistent spark delivery on MerCruiser and PleasureCraft engines using Delco HVS distributors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5245 fit MerCruiser engines older than 2001?\u003c\/strong\u003e No, the 18-5245 rotor is specified for MerCruiser MCM\/MIE 4.3L, 5.0L, 5.7L, and 6.2L MPI engines from 2001 and newer with ECM 555 serial numbers 0M300000 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with the Sierra 18-5245?\u003c\/strong\u003e Each order includes one Sierra 18-5245 distributor rotor.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988202893531,"sku":"SIE-18-5245","price":16.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5245_lg__82393.1558127846.500.750.jpg?v=1785188291"},{"product_id":"sierra-18-5313-1-marine-distributor-for-gm-v8-engines-conventional-rotation-replaces-mallory-yl624av","title":"Sierra Distributor 18-5313-1, Conventional Ignition for GM 305\/350\/454 V8 Marine Engines","description":"\u003cp\u003eThe Sierra 18-5313-1 is a conventional (points-type) ignition distributor built for GM 305, 350, and 454 cubic-inch V8 marine engines. It is designed as a direct fit for these inboard\/sterndrive V8 applications, delivering the ignition timing and spark distribution these engines require for reliable starting and smooth running. As a conventional distributor, it works with a traditional points-and-condenser ignition setup rather than an electronic ignition module, making it a straightforward replacement for boat owners maintaining an original-style ignition system.\u003c\/p\u003e\u003cp\u003eThis distributor is cataloged for GM 305, 350, and 454 cid V8 engine applications across two documented model ranges: 1976-82 and 1983-88. Confirm your engine displacement and model year against your boat's engine tag before ordering, since distributor fitment is specific to engine family and year range.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5313-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Conventional Ignition Distributor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3.58 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282349752\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e GM 305, 350, 454 cid V8 engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication Years:\u003c\/strong\u003e 1976-82, 1983-88\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Conventional (points-type)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1976-82, 8-cylinder, 305\/350\/454 cid engine\u003c\/li\u003e\n\u003cli\u003e1983-88, 8-cylinder, 305\/350\/454 cid engine\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5313-1 distributor fit?\u003c\/strong\u003e The Sierra 18-5313-1 is cataloged for GM 305, 350, and 454 cubic-inch V8 marine engines, covering 1976-82 and 1983-88 model year applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5313-1 a conventional or electronic ignition distributor?\u003c\/strong\u003e It is a conventional, points-type ignition distributor, designed for engines running a traditional points-and-condenser ignition setup rather than electronic ignition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5313-1 distributor weigh?\u003c\/strong\u003e The Sierra 18-5313-1 distributor weighs 3.58 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this distributor work on a 1980 model year GM 305 or 350 V8 marine engine?\u003c\/strong\u003e Yes, the Sierra 18-5313-1 is cataloged for the 1976-82 model range for GM 305, 350, and 454 cid V8 engines, which covers a 1980 model year application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5313-1 fit a 454 cid engine as well as the 305 and 350?\u003c\/strong\u003e Yes, Sierra part number 18-5313-1 is listed for GM 305, 350, and 454 cubic-inch V8 engine applications in both the 1976-82 and 1983-88 ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-5313-1?\u003c\/strong\u003e You receive one Sierra 18-5313-1 conventional ignition distributor unit; points, cap, rotor, and condenser are not documented as included with this part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5313-1 a direct OEM replacement?\u003c\/strong\u003e The 18-5313-1 is Sierra's part number for this conventional ignition distributor application on GM 305\/350\/454 V8 marine engines; verify your existing distributor's application before ordering to ensure a correct match.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5313-1 distributor?\u003c\/strong\u003e The UPC for the Sierra 18-5313-1 conventional ignition distributor is 808282349752.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-5313-1 on a Ford marine V8 engine?\u003c\/strong\u003e No, the Sierra 18-5313-1 is cataloged specifically for GM 305, 350, and 454 cid V8 engine applications, not Ford engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat ignition system type does this distributor use?\u003c\/strong\u003e The 18-5313-1 uses a conventional points-and-condenser ignition system, as opposed to a breakerless electronic ignition design.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988208857307,"sku":"SIE-18-5313-1","price":460.59,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5313-1__01544.1722383749.500.750.jpg?v=1785189076"},{"product_id":"marine-electronic-ignition-distributor-for-most-gm-v8-reverse-rotation-sierra-18-5316-1","title":"Sierra Distributor 18-5316-1 for Volvo Penta Ignition Systems","description":"\u003cp\u003eThe Sierra Distributor, part number 18-5316-1, is an ignition system distributor built for Volvo Penta marine engine applications. It is designed as a direct-fit replacement component within the Volvo Penta ignition system, delivering the timed spark distribution required for reliable engine starting and running performance on the water.\u003c\/p\u003e\u003cp\u003eThe housing carries a machined exterior finish, reflecting the precision manufacturing typical of Sierra ignition components. As with all distributor assemblies, this part is a wear-and-service item that boat owners typically replace when ignition timing issues, hard starting, or misfires point to a failing distributor.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5316-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Volvo Penta Ignition System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282349844\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is Sierra part 18-5316-1?\u003c\/strong\u003e It is a distributor for Volvo Penta marine ignition systems, identified by Sierra part number 18-5316-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this distributor made for Volvo Penta engines?\u003c\/strong\u003e Yes, the Sierra 18-5316-1 distributor is categorized for use in Volvo Penta ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5316-1 distributor weigh?\u003c\/strong\u003e This distributor weighs 4.3 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5316-1 distributor?\u003c\/strong\u003e The listed product dimensions for the Sierra 18-5316-1 are 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the Sierra 18-5316-1 have?\u003c\/strong\u003e The Sierra 18-5316-1 distributor has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5316-1 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-5316-1 is the Sierra manufacturer part number for this distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat signs indicate this distributor needs replacement?\u003c\/strong\u003e Hard starting, misfires, or ignition timing problems in a Volvo Penta engine are common reasons boat owners replace the distributor, part 18-5316-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-5316-1 include mounting hardware?\u003c\/strong\u003e The available product information for the Sierra 18-5316-1 distributor does not specify included hardware.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5316-1 distributor?\u003c\/strong\u003e The UPC for the Sierra 18-5316-1 distributor is 808282349844.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5316-1 distributor part of the ignition system or the fuel system?\u003c\/strong\u003e It is an ignition system component, specifically a distributor for Volvo Penta engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988209250523,"sku":"SIE-18-5316-1","price":257.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5316-1__66582.1722362994.500.750.jpg?v=1785188815"},{"product_id":"distributor-cap-for-ford-gm-v-8-prestolite-conventional-ignition-replaces-mercury-392-9766-sierra-18-5352","title":"Sierra 18-5352 Distributor Cap, Replaces 41058, Fits Ford \u0026 GM V-8 Prestolite Ignition","description":"\u003cp\u003eThe Sierra 18-5352 is a marine distributor cap built for Ford and GM V-8 engines equipped with a Prestolite conventional ignition system using a screw hold-down cap. It is a fit-specific ignition component that seals and protects the distributor's internal contacts while directing spark to each cylinder in firing order, making it a routine tune-up and ignition-repair replacement part for boat owners and marine mechanics.\u003c\/p\u003e\u003cp\u003eThe cap is constructed of machined aluminum and stainless steel with a black finish, giving it corrosion resistance for the marine environment while maintaining a precise, twist-on fit over the distributor housing. It measures 5.5 x 4.75 x 3.5 inches and weighs 0.5 pounds. Each Sierra ignition part is manufactured to meet or exceed the specifications of the original equipment part it replaces, and the 18-5352 cross-references directly to OEM part number 41058.\u003c\/p\u003e\u003cp\u003eThis is a fit-specific part intended for Ford and GM V-8 marine engines with Prestolite conventional (screw hold-down) ignition systems. Because distributor caps vary by ignition type and hold-down style, confirm your engine's ignition configuration before ordering to ensure proper fit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5352\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 5.5 x 4.75 x 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.5 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e Ford and GM V-8 engines with Prestolite conventional ignition (screw hold-down cap)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999318961\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFord V-8 marine engines with Prestolite conventional ignition (screw hold-down cap)\u003c\/li\u003e\n\u003cli\u003eGM V-8 marine engines with Prestolite conventional ignition (screw hold-down cap)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e41058\u003c\/li\u003e\n\u003cli\u003e392-9766\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5352 distributor cap fit?\u003c\/strong\u003e The Sierra 18-5352 is designed for Ford and GM V-8 marine engines equipped with a Prestolite conventional ignition system that uses a screw hold-down cap, not a clip-on style cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5352 the same as OEM part 41058?\u003c\/strong\u003e Yes, the 18-5352 is a direct cross-reference replacement for OEM part number 41058, manufactured to meet or exceed the original part's specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-5352 distributor cap made from?\u003c\/strong\u003e It is made of machined aluminum and stainless steel with a black finish, giving it corrosion resistance suited to marine ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor?\u003c\/strong\u003e The 18-5352 uses a screw hold-down design rather than spring clips, so it is intended for distributors built for a screw-mounted cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions and weight of the 18-5352?\u003c\/strong\u003e The Sierra 18-5352 distributor cap measures 5.5 x 4.75 x 3.5 inches and weighs 0.5 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5352 come with a rotor?\u003c\/strong\u003e No, the package includes one distributor cap only; the rotor is a separate Sierra part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this cap work on a GM small block V-8 with electronic ignition?\u003c\/strong\u003e The 18-5352 is built for Prestolite conventional ignition with a screw hold-down cap, so it is not intended for electronic ignition distributor housings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5352 genuine Sierra or a generic aftermarket part?\u003c\/strong\u003e It is a genuine Sierra-branded marine ignition part, engineered as a direct replacement for the original Prestolite-style distributor cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM numbers cross-reference to the 18-5352?\u003c\/strong\u003e The Sierra 18-5352 distributor cap replaces OEM part number 41058 and corresponds to OE number 392-9766.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if I need this cap versus a different Sierra distributor cap?\u003c\/strong\u003e The 18-5352 is specific to Ford and GM V-8 engines with Prestolite conventional, screw hold-down ignition; other Sierra caps in the same family, such as 18-5361 or 18-5354, are built for different ignition systems, so confirm your engine's ignition type before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and finish does the 18-5352 have?\u003c\/strong\u003e The cap has a black body with a machined exterior finish on its aluminum and stainless steel construction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5352 covered by a warranty?\u003c\/strong\u003e Yes, the Sierra 18-5352 distributor cap is covered under Sierra's standard limited warranty.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988209545435,"sku":"SIE-18-5352","price":28.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__34017.1753840678.500.750.jpg?v=1785188006"},{"product_id":"distributor-cap-for-prestolite-v-6-single-point-marine-ignition-replaces-crusader-41069-mercruiser-392-9086-sierra-18-5353","title":"Sierra 18-5353 Distributor Cap, Replaces Mercury Marine 392-9086T, Fits 1984-88 6-Cylinder 3.8L Engines","description":"\u003cp\u003eThe Sierra 18-5353 Distributor Cap is a machined metal replacement distributor cap engineered for marine engines using the IBM-7014A distributor, found on 1984-88 6-cylinder 3.8L engine applications. It is built to meet or exceed the performance of the original equipment part it replaces, delivering reliable ignition spark distribution for consistent engine starting and running performance.\u003c\/p\u003e\u003cp\u003eConstructed from metal with a machined exterior finish and a twist-on closure, this distributor cap is designed for a secure, positive fit that resists vibration loosening during operation. Each unit ships as a single cap, ready to install in place of a worn, cracked, or corroded original cap as part of a routine ignition tune-up.\u003c\/p\u003e\u003cp\u003eThis cap is cross-referenced to a wide range of OEM and aftermarket part numbers, making it a straightforward replacement whether your engine is identified by a Crusader, Evinrude\/Johnson\/OMC, Mallory, Mercury Marine, or Volvo Penta part number. As a Sierra part, it is backed by Sierra's standard customer satisfaction warranty.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5353\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 5.5 x 5 x 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.51 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributor Number:\u003c\/strong\u003e IBM-7014A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e 6 Cylinder 3.8L Engine (1984-88)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1984-88, 6 Cylinder, 3.8L Engine, Distributor No. IBM-7014A\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCrusader 41069\u003c\/li\u003e\n\u003cli\u003eGLM 71600\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson\/OMC 982879\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson\/OMC 9843398\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson\/OMC 3853814\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson\/OMC 984398\u003c\/li\u003e\n\u003cli\u003eMallory 9-29426\u003c\/li\u003e\n\u003cli\u003eMercruiser 392-9086T\u003c\/li\u003e\n\u003cli\u003eMercruiser 392-9086\u003c\/li\u003e\n\u003cli\u003eMercruiser 804417\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 841926\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 841926-9\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5353 distributor cap fit?\u003c\/strong\u003e The Sierra 18-5353 fits 1984-88 6-cylinder 3.8L marine engines that use the IBM-7014A distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5353 a genuine Sierra part or aftermarket?\u003c\/strong\u003e It is a genuine Sierra International part, manufactured to meet or exceed the performance of the original equipment cap it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-5353 replace?\u003c\/strong\u003e It cross-references to Crusader 41069, GLM 71600, Evinrude\/Johnson\/OMC 982879, 9843398, 3853814, and 984398, Mallory 9-29426, Mercruiser 392-9086T, 392-9086, and 804417, and Volvo Penta 841926 and 841926-9.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the distributor cap made of?\u003c\/strong\u003e The Sierra 18-5353 is made of metal with a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5353 distributor cap?\u003c\/strong\u003e It measures 5.5 x 5 x 3.5 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5353 distributor cap weigh?\u003c\/strong\u003e The 18-5353 weighs 0.51 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor?\u003c\/strong\u003e It uses a twist-on closure for a secure, vibration-resistant fit on the distributor body.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-5353 distributor cap?\u003c\/strong\u003e The cap is white in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5353 come with a warranty?\u003c\/strong\u003e Yes, as a Sierra part the 18-5353 distributor cap is covered under Sierra's customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-5353?\u003c\/strong\u003e One Sierra 18-5353 distributor cap ships per order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich distributor number is this cap designed for?\u003c\/strong\u003e The 18-5353 is matched to distributor number IBM-7014A, used on 1984-88 6-cylinder 3.8L engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this cap fit a Mercruiser 3.8L application?\u003c\/strong\u003e Yes, the 18-5353 cross-references to Mercruiser part numbers 392-9086T, 392-9086, and 804417 for compatible 3.8L 6-cylinder engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988209742043,"sku":"SIE-18-5353","price":38.63,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5353_lg__12416.1693917224.500.750.jpg?v=1785188917"},{"product_id":"marine-distributor-cap-for-volvo-penta-stern-drive-with-bosch-ignition-replaces-oem-841263-sierra-18-5358","title":"Sierra 18-5358 Distributor Cap, Replaces Volvo Penta 841263, for AQ145\/AQ151 Stern Drive Engines, White","description":"\u003cp\u003eThe Sierra 18-5358 Distributor Cap is a direct-fit ignition component designed for Bosch-style distributor applications on Volvo Penta stern drive engines, specifically the AQ145A, AQ145B, AQ151A, AQ151B, and AQ151C engine models. The distributor cap seals and protects the distributor's internal contacts while directing high-voltage spark from the ignition coil to each spark plug in firing order, making it a critical part for reliable engine starting and smooth running. This cap is finished in white with a machined metal construction and uses a twist-on closure for secure, tool-free installation and removal during routine maintenance or tune-ups.\u003c\/p\u003e\u003cp\u003eEach Sierra 18-5358 cap is built to meet or exceed the performance of the original equipment part it replaces, making it a straightforward swap for a cracked, worn, or corroded distributor cap. It is interchangeable with several commonly referenced cross numbers, so boat owners searching by CDI, GLM, Mallory, or Volvo Penta part numbers can confirm they are ordering the correct replacement. One distributor cap is included per package.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5358\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.48 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319012\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVolvo Penta AQ145A\u003c\/li\u003e\n\u003cli\u003eVolvo Penta AQ145B\u003c\/li\u003e\n\u003cli\u003eVolvo Penta AQ151A\u003c\/li\u003e\n\u003cli\u003eVolvo Penta AQ151B\u003c\/li\u003e\n\u003cli\u003eVolvo Penta AQ151C\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCDI E64-0011\u003c\/li\u003e\n\u003cli\u003eGLM 71480\u003c\/li\u003e\n\u003cli\u003eMallory 9-29410\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 841263\u003c\/li\u003e\n\u003cli\u003eVolvo 841263-7\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5358 distributor cap fit?\u003c\/strong\u003e The 18-5358 distributor cap fits Volvo Penta AQ145A, AQ145B, AQ151A, AQ151B, and AQ151C stern drive engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5358 cap compatible with Bosch distributors?\u003c\/strong\u003e Yes, the Sierra 18-5358 distributor cap is designed for use in Bosch-style distributor applications on the applicable Volvo Penta engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is this distributor cap?\u003c\/strong\u003e The Sierra 18-5358 distributor cap is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-5358 cap made of?\u003c\/strong\u003e It is made of metal with a machined finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-5358 cross reference?\u003c\/strong\u003e Sierra part 18-5358 is interchangeable with CDI E64-0011, GLM 71480, Mallory 9-29410, and Volvo Penta 841263 (also referenced as Volvo 841263-7).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the distributor cap weigh?\u003c\/strong\u003e The Sierra 18-5358 distributor cap weighs 0.48 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor?\u003c\/strong\u003e It uses a twist-on closure, allowing the 18-5358 cap to be secured or removed without additional tools.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many caps come in a package?\u003c\/strong\u003e Each order of the Sierra 18-5358 includes one distributor cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5358 an OEM or aftermarket part?\u003c\/strong\u003e It is an aftermarket replacement built by Sierra to meet or exceed the performance of the original equipment part it replaces, including Volvo Penta 841263.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace my distributor cap?\u003c\/strong\u003e A distributor cap like the 18-5358 should be replaced if it is cracked, corroded, or showing carbon tracking, since these conditions cause misfires or hard starting on AQ145 and AQ151 series engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5358 include the rotor?\u003c\/strong\u003e No, the package includes only the Sierra 18-5358 distributor cap itself; the rotor is a separate component.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988209774811,"sku":"SIE-18-5358","price":81.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5358_lg__62577.1558129711.500.750.jpg?v=1785189122"},{"product_id":"distributor-cap-for-mercruiser-3-0l-lx-4-cyl-gm-module-in-cap-distributors-replaces-omc-986643-and-mercruiser-811635-sierra-18-5361","title":"Sierra 18-5361 Distributor Cap, GM Module-in-Cap 4-Cylinder Distributors, Replaces OMC 986643","description":"\u003cp\u003eThe Sierra 18-5361 Distributor Cap is a direct-fit replacement cap for New GM Module-in-Cap 4-cylinder distributors, including 3.0L LX applications. It is built from machined metal in a white finish and uses a twist-on closure for a secure, weatherproof seal over the distributor. As the cap that routes spark from the ignition coil to each spark plug in firing order, it is a wear item that should be inspected and replaced when it shows cracking, carbon tracking, or corroded terminal contacts, since a failing cap can cause misfires, hard starting, or a no-start condition.\u003c\/p\u003e\u003cp\u003eThe 18-5361 replaces OMC 986643 and is manufactured to meet or exceed the specifications of the original equipment part. It is compact, measuring 0.39 x 0.39 x 0.39 inches and weighing 0.21 pounds, and is sold as a single distributor cap ready to install in place of the original.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5361\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.21 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999563705\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNew GM Module-in-Cap 4-cylinder distributors\u003c\/li\u003e\n\u003cli\u003e3.0L LX\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e986643\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5361 distributor cap fit?\u003c\/strong\u003e The 18-5361 fits New GM Module-in-Cap 4-cylinder distributors, including 3.0L LX applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-5361 replace?\u003c\/strong\u003e It replaces OMC 986643, the original equipment distributor cap for these GM 4-cylinder Module-in-Cap distributors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5361 a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-5361 is manufactured by Sierra as a direct replacement, built to meet or exceed the specifications of the original equipment cap it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-5361 distributor cap made of?\u003c\/strong\u003e It is made of machined metal with a white finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor?\u003c\/strong\u003e The 18-5361 uses a twist-on closure to seat and lock onto the distributor housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-5361 distributor cap?\u003c\/strong\u003e The distributor cap measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5361 distributor cap weigh?\u003c\/strong\u003e It weighs 0.21 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-5361?\u003c\/strong\u003e The order includes one Sierra 18-5361 distributor cap; a matching rotor is a separate part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should a distributor cap like the 18-5361 be replaced?\u003c\/strong\u003e A distributor cap should be replaced when it shows cracking, carbon tracking, or corroded terminal contacts, since these conditions can cause misfires or a no-start condition on GM Module-in-Cap 4-cylinder distributors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5361 come with a warranty?\u003c\/strong\u003e Yes, the Sierra 18-5361 distributor cap is covered under Sierra's standard limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5361?\u003c\/strong\u003e The UPC for the Sierra 18-5361 distributor cap is 030999563705.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988209840347,"sku":"SIE-18-5361","price":12.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5361_lg__92453.1558129825.500.750.jpg?v=1785187973"},{"product_id":"distributor-cap-for-mercruiser-808483-gm-v-8-module-in-cap-distributors-sierra-18-5354-crusader-38070-omc-volvo-penta-3854548","title":"Sierra 18-5354 Distributor Cap, Replaces Mercury Marine 808483, for MerCruiser 350 MAG MPI 350\/V-8","description":"\u003cp\u003eThe Sierra 18-5354 Distributor Cap is a contact-controlled, standard-rotation distributor cap built for MerCruiser 350 MAG MPI 350\/V-8 inboard\/sterndrive engines. It is designed for New GM style module-in-cap distributors and is not intended for engines running Thunderbolt ignition or MPI engines equipped with an ECM 555. The cap is machined from metal with a white exterior finish and a twist-on closure that secures firmly to the distributor housing while allowing quick removal for tune-ups or spark plug wire service.\u003c\/p\u003e\u003cp\u003eThis distributor cap covers the ignition side of a full tune-up and is commonly replaced together with the contact set, rotor, coil, and spark plug wires when servicing a MerCruiser 350 MAG MPI ignition system. It measures 5.8 x 5.5 x 5.4 inches and weighs 0.33 pounds. Every Sierra part is built to meet or exceed the performance of the original equipment component it replaces, giving boat owners a reliable factory-fit alternative for scheduled maintenance or ignition repairs.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5354\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Contact controlled distributor, standard rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Exclusion:\u003c\/strong\u003e Not for use with Thunderbolt ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 5.8 x 5.5 x 5.4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.33 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 350 MAG MPI (GEN +) 350\/V-8, model year 1998, serial number range L010019-L325962\u003c\/li\u003e\n\u003cli\u003eMerCruiser 350 MAG MPI MIE (GEN +) 350\/V-8, model year 1998, serial number range L002008-L302199\u003c\/li\u003e\n\u003cli\u003eMerCruiser 350 MAG MPI SKI 350\/V-8, model years 1995-1998, serial number range F350583-L304599\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCrusader 38070\u003c\/li\u003e\n\u003cli\u003eGLM 71400\u003c\/li\u003e\n\u003cli\u003eMallory 9-29411\u003c\/li\u003e\n\u003cli\u003eMercury Marine \/ MerCruiser 808483\u003c\/li\u003e\n\u003cli\u003eMercury Marine \/ MerCruiser 808483T3\u003c\/li\u003e\n\u003cli\u003eMercury Marine \/ MerCruiser 804418\u003c\/li\u003e\n\u003cli\u003eMercury Marine \/ MerCruiser 808483T\u003c\/li\u003e\n\u003cli\u003eOMC 3854548\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 3854548-9\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5354 distributor cap fit?\u003c\/strong\u003e The 18-5354 fits MerCruiser 350 MAG MPI (GEN +) 350\/V-8 engines from model year 1998 with serial numbers L010019-L325962, the 350 MAG MPI MIE (GEN +) 350\/V-8 from 1998 with serial numbers L002008-L302199, and the 350 MAG MPI SKI 350\/V-8 from model years 1995-1998 with serial numbers F350583-L304599.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this cap work with a Thunderbolt ignition system?\u003c\/strong\u003e No, the Sierra 18-5354 is a contact-controlled, standard-rotation distributor cap and is not designed for engines running Thunderbolt ignition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5354 compatible with MPI engines using an ECM 555?\u003c\/strong\u003e No, this distributor cap is built for New GM style module-in-cap distributors on V-8 applications and excludes MPI engines equipped with an ECM 555.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the Sierra 18-5354 replace?\u003c\/strong\u003e It replaces Crusader 38070, GLM 71400, Mallory 9-29411, Mercury Marine \/ MerCruiser 808483, 808483T3, 804418, and 808483T, OMC 3854548, and Volvo Penta 3854548-9.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the distributor cap made from?\u003c\/strong\u003e The 18-5354 is machined from metal and finished in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor?\u003c\/strong\u003e It uses a twist-on closure that secures to the distributor housing and can be removed for tune-up service or spark plug wire access.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions and weight of the 18-5354?\u003c\/strong\u003e This distributor cap measures 5.8 x 5.5 x 5.4 inches and weighs 0.33 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5354 an original equipment part or aftermarket?\u003c\/strong\u003e It is an aftermarket Sierra replacement part built to meet or exceed the performance of the original equipment distributor cap it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat other ignition parts are commonly replaced along with this cap?\u003c\/strong\u003e On a MerCruiser 350 MAG MPI ignition tune-up, the distributor cap is typically serviced together with the contact set, rotor, coil, and spark plug wires.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5354 include the rotor or spark plug wires?\u003c\/strong\u003e No, this listing is for the distributor cap only; the rotor, contact set, coil, and spark plug wires are separate components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the serial number range matter when ordering this cap?\u003c\/strong\u003e Yes, the 18-5354 is matched to specific serial number ranges on MerCruiser 350 MAG MPI engines, such as L010019-L325962 for the GEN + variant, so confirming your engine's serial number ensures correct fitment.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988209873115,"sku":"SIE-18-5354","price":32.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5354_lg__57179.1558129549.500.750.jpg?v=1785188006"},{"product_id":"sierra-18-5369-marine-distributor-cap-with-gasket-for-ford-v-8-prestolite-ignition-clip-hold-down-replaces-mercury-392-6318-omc-982336","title":"Sierra 18-5369 Marine Distributor Cap with Gasket, Replaces RA108002, Fits Ford V-8 with Prestolite Ignition","description":"\u003cp\u003eThe Sierra 18-5369 is a marine distributor cap engineered to meet today's high horsepower engine demands and stand up to the harsh marine environment. It is built for a Ford V-8 engine equipped with a Prestolite ignition system using a clip hold-down cap, and is intended for Prestolite, all 7011 applications. The cap is made of metal with a machined exterior finish and a white color, and comes complete with the matching 18-5399 gasket so the cap and seal are ready to install as a set. Sierra states that its products meet or exceed the original equipment part they replace, and Sierra supplies parts to many OEM engine manufacturers and boat builders.\u003c\/p\u003e\u003cp\u003eThis distributor cap is a direct replacement for RA108002 and uses a twist-on closure type for secure, repeatable installation. It measures 0.39 x 0.39 x 0.39 inches and weighs 0.71 pounds. Whether performing a routine ignition tune-up or replacing a cracked or worn cap, the 18-5369 restores proper spark distribution to keep a Prestolite-ignition Ford V-8 marine engine running reliably.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5369\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e 18-5399 Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces:\u003c\/strong\u003e RA108002\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.71 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319043\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Chrysler Inboard Tune Up Kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFord V-8 engines with Prestolite ignition using a clip hold-down cap\u003c\/li\u003e\n\u003cli\u003ePrestolite, all 7011\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eRA108002\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5369 distributor cap fit?\u003c\/strong\u003e The Sierra 18-5369 is designed for a Ford V-8 engine using a Prestolite ignition system with a clip hold-down cap, and covers Prestolite, all 7011 applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5369 come with a gasket?\u003c\/strong\u003e Yes, the Sierra 18-5369 distributor cap includes the matching 18-5399 gasket, so both parts are ready to install together.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-5369 replace?\u003c\/strong\u003e This distributor cap replaces OEM part number RA108002.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the distributor cap made of?\u003c\/strong\u003e The 18-5369 is made of metal with a machined exterior finish and a white color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5369 weigh?\u003c\/strong\u003e The Sierra 18-5369 distributor cap weighs 0.71 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5369 distributor cap?\u003c\/strong\u003e The Sierra 18-5369 measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor?\u003c\/strong\u003e The 18-5369 uses a twist-on closure type for secure attachment to the distributor housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5369 an OEM or aftermarket part?\u003c\/strong\u003e The 18-5369 is a Sierra aftermarket distributor cap that Sierra states is engineered to meet or exceed the specifications of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this distributor cap be replaced?\u003c\/strong\u003e A distributor cap like the Sierra 18-5369 is typically replaced during routine ignition tune-ups or when the existing cap shows cracks, corrosion, or wear that disrupts spark distribution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the box with the 18-5369?\u003c\/strong\u003e The package includes the Sierra 18-5369 distributor cap along with the 18-5399 gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5369 fit a non-Prestolite ignition system?\u003c\/strong\u003e No, the 18-5369 is built specifically for a Ford V-8 engine with a Prestolite ignition system using a clip hold-down cap; it is not intended for other ignition types.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat brand makes part number 18-5369?\u003c\/strong\u003e Part number 18-5369 is manufactured by Sierra.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988212330715,"sku":"SIE-18-5369","price":33.06,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5369_lg__53889.1558129947.500.750.jpg?v=1785188705"},{"product_id":"marine-distributor-cap-for-mallory-single-point-v-8-ignition-replaces-mercury-391-5075-omc-982209-fits-ford-gm-chrysler-inboard-sierra-18-5376","title":"Sierra Distributor Cap 18-5376 - Replaces Crusader 20222, Ford \u0026 GM V-8 Inboard Ignition","description":"\u003cp\u003eThe Sierra 18-5376 is a replacement distributor cap engineered for inboard marine ignition systems, including Crusader applications, and fits Ford and GM V-8 engines equipped with Mallory ignition setups. It is designed to work with breakerless ignition systems that sense current levels in the coil and adjust dwell to maintain peak energy across the full RPM range, delivering on average four times more available energy between 3000 and 5000 RPM and roughly twice the plug voltage compared to older point-type ignition systems. Because ignition energy is sustained and coil current is regulated to peak just before spark, coil life is extended and timing stability is improved throughout the engine's operating range.\u003c\/p\u003e\u003cp\u003eThis distributor cap is a direct fit for the OEM part it replaces, restoring proper spark distribution to each cylinder and helping the engine start reliably and run smoothly. It is built to the fit, form, and function of the original equipment component, making it a straightforward swap during a tune-up or ignition system service.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5376\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Inboard - Crusader Ignition System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e Ford and GM V-8 engines with Mallory ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.6 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999236647\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 20222\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eInboard - Crusader Ignition System\u003c\/li\u003e\n\u003cli\u003eFord and GM V-8 engines with Mallory ignition\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e20222\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5376 distributor cap fit?\u003c\/strong\u003e The Sierra 18-5376 is designed for inboard Crusader ignition systems and fits Ford and GM V-8 engines equipped with Mallory ignition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does 18-5376 replace?\u003c\/strong\u003e This cap replaces OEM part number 20222 on applicable Crusader inboard ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5376 distributor cap weigh?\u003c\/strong\u003e It weighs 0.6 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5376 a direct OEM replacement or an aftermarket part?\u003c\/strong\u003e The Sierra 18-5376 is built to the fit, form, and function of the original equipment cap it replaces, functioning as a direct replacement rather than a universal fit part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this distributor cap work with point-type ignition systems?\u003c\/strong\u003e It is designed for breakerless-style ignition systems that sense coil current and adjust dwell electronically, rather than traditional point-type systems, and it develops significantly more available energy and plug voltage than point-type setups in the 3000-5000 RPM range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5376 help with hard starting or misfires?\u003c\/strong\u003e By restoring proper spark distribution to each cylinder and maintaining sustained ignition energy through peak RPM, the Sierra 18-5376 helps address rough running, hard starting, and misfire symptoms caused by a worn or cracked distributor cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5376 improve ignition timing stability?\u003c\/strong\u003e Yes, the system this cap is part of provides more stable timing by regulating coil current to reach peak level just prior to spark.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a gasket included with the 18-5376 distributor cap?\u003c\/strong\u003e The Sierra 18-5376 distributor cap is supplied as a complete cap assembly for installation on compatible Crusader inboard ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5376?\u003c\/strong\u003e The UPC for the Sierra 18-5376 distributor cap is 030999236647.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-5376 different from the Sierra 18-5375 or 18-5384 distributor caps?\u003c\/strong\u003e The 18-5376 is a distinct part number engineered to replace OEM number 20222, while other Sierra distributor caps in the same family replace different OEM numbers, so buyers should confirm their original cap's OEM number before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5376 extend ignition coil life?\u003c\/strong\u003e Yes, because ignition energy is sustained and coil current is regulated to reach peak just before spark, coil life is increased as part of the ignition system this cap serves.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988212363483,"sku":"SIE-18-5376","price":33.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5376_lg__19483.1558127229.500.750.jpg?v=1785188376"},{"product_id":"distributor-cap-for-mercruiser-850484-omc-volvo-penta-3854331-fits-gm-v6-module-in-cap-distributors-sierra-18-5362","title":"Sierra 18-5362 Distributor Cap for GM V6 Module-in-Cap Distributors, Replaces Mercruiser 850484T, OMC 3854331","description":"\u003cp\u003eThe Sierra 18-5362 Distributor Cap is a direct-fit replacement cap designed for New GM style \"Module in Cap\" distributors used on V6 marine engine applications. It mounts to the top of the distributor housing and routes ignition voltage from the internal module to each spark plug wire in firing order, so a cracked, arced, or corroded cap is a common cause of rough running or a no-start condition. This cap is built to the fit and function of the original equipment part and is interchangeable with a range of OEM and aftermarket cross-reference numbers used across GLM, Mallory, Mercruiser, OMC, and Volvo Penta ignition systems, making it a straightforward swap for boat owners servicing GM-based V6 marine engines with a module-in-cap distributor.\u003c\/p\u003e\u003cp\u003eThe cap has a white, machined exterior finish and a twist-on closure for secure, tool-free installation once aligned to the distributor housing. When replacing this cap, use the matching Sierra 18-5408 rotor to complete the ignition module service, since cap and rotor are designed to be serviced together. Each Sierra part is built to meet or exceed the performance of the original component it replaces and is backed by Sierra's standard limited warranty.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5362\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e New GM Style \"Module in Cap\" Distributors - V6 Applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Rotor:\u003c\/strong\u003e 18-5408\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e GLM 71410, Mallory 9-29425, Mercruiser 850484T, 850484, 804420, 850484T2, OMC 3854331, Volvo Penta 3854331-0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.24 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999563712\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNew GM style \"Module in Cap\" distributors - V6 applications\u003c\/li\u003e\n\u003cli\u003eUse with Sierra 18-5408 rotor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 71410\u003c\/li\u003e\n\u003cli\u003eMallory 9-29425\u003c\/li\u003e\n\u003cli\u003eMercruiser 850484T\u003c\/li\u003e\n\u003cli\u003eMercruiser 850484\u003c\/li\u003e\n\u003cli\u003eMercruiser 804420\u003c\/li\u003e\n\u003cli\u003eMercruiser 850484T2\u003c\/li\u003e\n\u003cli\u003eOMC 3854331\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 3854331-0\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5362 distributor cap fit?\u003c\/strong\u003e The 18-5362 fits New GM style \"Module in Cap\" distributors used in V6 marine engine applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich rotor should I use with this distributor cap?\u003c\/strong\u003e Sierra recommends pairing the 18-5362 cap with the Sierra 18-5408 rotor for these V6 module-in-cap distributors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5362 a genuine Sierra part or aftermarket?\u003c\/strong\u003e It is a genuine Sierra part, manufactured to meet or exceed the performance of the original equipment cap it replaces, and covered by Sierra's limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the Sierra 18-5362 cross-reference to?\u003c\/strong\u003e It is interchangeable with GLM 71410, Mallory 9-29425, Mercruiser 850484T, 850484, 804420, and 850484T2, OMC 3854331, and Volvo Penta 3854331-0.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this cap work on a Mercruiser with a module-in-cap V6 distributor?\u003c\/strong\u003e Yes, the 18-5362 cross-references to Mercruiser 850484T, 850484, 804420, and 850484T2, so it fits Mercruiser V6 engines using the New GM style module-in-cap distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5362 fit OMC or Volvo Penta engines too?\u003c\/strong\u003e Yes, this cap is also interchangeable with OMC 3854331 and Volvo Penta 3854331-0 for GM-based V6 module-in-cap distributors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and finish does the distributor cap have?\u003c\/strong\u003e The 18-5362 has a white body with a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the distributor cap attach to the distributor housing?\u003c\/strong\u003e It uses a twist-on closure, allowing it to be secured to the distributor housing without additional tools.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-5362 distributor cap?\u003c\/strong\u003e The cap measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5362 distributor cap weigh?\u003c\/strong\u003e It weighs 0.24 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-5362?\u003c\/strong\u003e You receive one Sierra 18-5362 distributor cap; the matching 18-5408 rotor is sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace this distributor cap?\u003c\/strong\u003e A cracked, arced, or corroded cap on a module-in-cap distributor is a common cause of rough running or hard starting, so the 18-5362 is used to replace a worn original cap on GM style V6 distributors.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988212494555,"sku":"SIE-18-5362","price":28.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5362_lg__14859.1558129896.500.750.jpg?v=1785188651"},{"product_id":"sierra-18-5389-distributor-cap-for-ford-gm-v-8-marine-engines-replaces-crusader-3000121-mercury-marine-393-4988t","title":"Sierra Distributor Cap 18-5389, Replaces Mercury Marine 393-4988T, for Ford \u0026 GM V-8 Engines","description":"\u003cp\u003eThe Sierra 18-5389 Distributor Cap is a metal, machined-finish replacement distributor cap built for Ford and GM V-8 marine engines running Autolite or Mercury ignition systems. It uses a twist-on closure for a secure, positive seal against moisture and vibration, both common failure points for marine ignition components operating in a harsh onboard environment. The white housing protects the internal contacts while distributing spark to each cylinder in firing order, and the cap is engineered to meet or exceed the specifications of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003eThis cap is a straightforward tune-up and ignition-maintenance item, suited for scheduled replacement as part of routine engine service or as a direct fix for a cracked, arced, or corroded cap. It ships as a single component and is intended to be matched with a compatible rotor and ignition coil for the engine it is installed on.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5389\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.67 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e Ford and GM V-8 engines with Autolite or Mercury ignitions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999236678\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFord V-8 marine engines with Autolite ignition\u003c\/li\u003e\n\u003cli\u003eGM V-8 marine engines with Autolite or Mercury ignition\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e393-4988T2\u003c\/li\u003e\n\u003cli\u003eCrusader 3000121\u003c\/li\u003e\n\u003cli\u003eMercury Marine 393-4988T\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5389 distributor cap fit?\u003c\/strong\u003e The 18-5389 fits Ford and GM V-8 marine engines equipped with Autolite or Mercury ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5389 cap a direct replacement for a Mercury Marine cap?\u003c\/strong\u003e Yes, this Sierra cap cross-references to Mercury Marine 393-4988T and 393-4988T2, along with Crusader 3000121, so it is a direct equivalent for those OEM part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-5389 distributor cap made from?\u003c\/strong\u003e It has a metal body with a machined exterior finish and a white housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor housing?\u003c\/strong\u003e The 18-5389 uses a twist-on closure type rather than screw-down clips.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5389 distributor cap weigh?\u003c\/strong\u003e It weighs 0.67 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this distributor cap?\u003c\/strong\u003e The Sierra 18-5389 measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5389 come with a rotor or gasket?\u003c\/strong\u003e No, the 18-5389 is supplied as the distributor cap only; it does not include a rotor or gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-5389 is a genuine Sierra part, manufactured to meet or exceed the specifications of the original equipment component it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5389 work on an engine with points-type ignition?\u003c\/strong\u003e The 18-5389 is designed for Ford and GM V-8 engines with Autolite or Mercury ignitions; check your existing ignition type before ordering, as it is not listed for other ignition configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my distributor cap needs replacing?\u003c\/strong\u003e Common signs include visible cracking, carbon tracking, corrosion on the internal contacts, or a rough-running engine; the 18-5389 is intended as a direct replacement when the original cap shows this kind of wear.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5389 distributor cap?\u003c\/strong\u003e The UPC for the Sierra 18-5389 distributor cap is 030999236678.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988212527323,"sku":"SIE-18-5389","price":30.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5389_lg__53264.1558127569.500.750.jpg?v=1785188433"},{"product_id":"distributor-cap-for-gm-4-cyl-marine-engines-with-delco-conventional-ignition-replaces-mercruiser-393-9459q1-sierra-18-5385","title":"Sierra 18-5385 Distributor Cap, Replaces Mercruiser 393-9459Q1, Fits MerCruiser 110\/120\/140 4-Cyl I\/O","description":"\u003cp\u003eThe Sierra 18-5385 Distributor Cap is a direct-fit ignition component for MerCruiser 4-cylinder sterndrive engines using a contact-controlled, standard-rotation distributor. It is molded from durable plastic with a machined white finish and a twist-on closure that seats securely over the distributor housing for a reliable weatherproof connection to the ignition system.\u003c\/p\u003e\u003cp\u003eThis cap is engineered for MerCruiser 110, 120, and 140 model engines equipped with Delco conventional ignition, and it is not intended for use on Thunderbolt ignition systems. It cross-references to a range of OEM and aftermarket part numbers used across Mercruiser, Chris-Craft, GLM, Evinrude\/Johnson, and Mallory catalogs, making it a convenient way to source a replacement cap regardless of which brand's part number you started with. Each Sierra distributor cap is built to meet or exceed the fit, form, and function of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003eThe 18-5385 cap is the distributor cap component of a broader MerCruiser tune-up lineup that also includes a matching contact set, rotor, coil, distributor, and spark plug wires, so it can be ordered on its own for a cap-only replacement or alongside those companion parts for a full ignition service.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5385\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.47 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition System Type:\u003c\/strong\u003e Contact-controlled, standard rotation, Delco conventional ignition (excludes Thunderbolt ignition)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e MerCruiser 110, 120, 140 4-cylinder I\/O engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 110 (153 cid L4), 1963-1966, Serial Number 1537370-2044033\u003c\/li\u003e\n\u003cli\u003eMerCruiser 120 (153 cid L4), 1964-1986, Serial Number 1666601-B531853\u003c\/li\u003e\n\u003cli\u003eMerCruiser 140 (181 cid L4), 1968-1986, Serial Number 2508261-B450800\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e16.69-00052\u003c\/li\u003e\n\u003cli\u003e71540\u003c\/li\u003e\n\u003cli\u003e380541\u003c\/li\u003e\n\u003cli\u003e9-29401\u003c\/li\u003e\n\u003cli\u003e393-9459Q1\u003c\/li\u003e\n\u003cli\u003e393-9459\u003c\/li\u003e\n\u003cli\u003e393-9549T\u003c\/li\u003e\n\u003cli\u003e33667\u003c\/li\u003e\n\u003cli\u003eFI6900052\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5385 distributor cap fit?\u003c\/strong\u003e The 18-5385 fits MerCruiser 110 (1963-1966), MerCruiser 120 (1964-1986), and MerCruiser 140 (1968-1986) 4-cylinder I\/O engines running Delco conventional ignition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this cap work on a Thunderbolt ignition system?\u003c\/strong\u003e No. The 18-5385 is designed for contact-controlled, standard-rotation distributors and specifically excludes Thunderbolt ignition setups.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5385 a genuine Sierra part or an aftermarket replacement?\u003c\/strong\u003e It is a Sierra-manufactured aftermarket distributor cap engineered to meet or exceed the fit and performance of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM numbers does the Sierra 18-5385 cross to?\u003c\/strong\u003e It cross-references to Mercruiser 393-9459Q1, 393-9459, 393-9549T, 33667, and FI6900052, Chris-Craft 16.69-00052, GLM 71540, Evinrude\/Johnson 380541, and Mallory 9-29401.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the distributor cap made of?\u003c\/strong\u003e The 18-5385 is molded from plastic with a machined white exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow big is the 18-5385 distributor cap?\u003c\/strong\u003e It measures 0.39 x 0.39 x 0.39 inches and weighs 0.47 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor?\u003c\/strong\u003e The 18-5385 uses a twist-on closure that secures directly over the distributor housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes in the box with the 18-5385?\u003c\/strong\u003e Each order includes one Sierra 18-5385 distributor cap only.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need any other parts along with this cap for a tune-up?\u003c\/strong\u003e The 18-5385 is the cap component of a MerCruiser 4-cylinder ignition lineup that also includes a matching rotor, contact set, coil, distributor, and spark plug wires, which can be ordered separately if a full tune-up is needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5385 fit GM 4-cylinder engines outside of MerCruiser applications?\u003c\/strong\u003e Yes, it is built for GM 4-cylinder engines equipped with Delco conventional ignition, which includes the MerCruiser 110, 120, and 140 applications listed for this cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's the difference between this cap and the OEM Mercruiser 393-9459Q1?\u003c\/strong\u003e The Sierra 18-5385 is a direct cross-reference to Mercruiser 393-9459Q1 and is built to match its fit and function as a replacement part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5385 covered by a warranty?\u003c\/strong\u003e Yes, the Sierra 18-5385 distributor cap is covered under Sierra's standard limited warranty.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988212560091,"sku":"SIE-18-5385","price":19.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5385_lg__39188.1558127369.500.750.jpg?v=1785188394"},{"product_id":"marine-distributor-cap-for-volvo-penta-v-8-gm-module-in-cap-ignition-replaces-3862014-243658-sierra-18-5394","title":"Sierra Distributor Cap 18-5394, Replaces 243658, for GM V-8 New Style Ignition","description":"\u003cp\u003eThe Sierra 18-5394 is a marine distributor cap engineered for GM V-8 engines of the new style design, where the ignition module is integrated directly into the cap itself rather than mounted as a separate external component. This module-in-cap construction simplifies the ignition system layout and is specific to the newer GM V-8 configuration it is built for.\u003c\/p\u003e\u003cp\u003eThe cap uses a twist-on closure for a secure, positive connection to the distributor body, helping keep moisture and contaminants out of the ignition circuit in a marine environment. It measures 4.9 x 5.5 x 3.6 inches and weighs 0.25 pounds. This distributor cap directly replaces OEM part number 243658, making it a straightforward swap for boats and stern drives originally equipped with that component.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5394\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 243658\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e GM V-8, new style\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Module:\u003c\/strong\u003e Integrated (Module in Cap)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 4.9 x 5.5 x 3.6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.25 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319128\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eGM V-8 engines, new style (module-in-cap design)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e243658\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5394 distributor cap fit?\u003c\/strong\u003e The 18-5394 is built for GM V-8 engines of the new style, where the ignition module is integrated into the cap rather than mounted separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does this distributor cap replace?\u003c\/strong\u003e Sierra 18-5394 replaces OEM part number 243658.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is meant by 'module in cap' for this distributor cap?\u003c\/strong\u003e It means the ignition module is built directly into the distributor cap assembly of the 18-5394, rather than being a separate external module bolted to the distributor housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5394 distributor cap weigh?\u003c\/strong\u003e The Sierra 18-5394 weighs 0.25 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this distributor cap?\u003c\/strong\u003e The 18-5394 measures 4.9 x 5.5 x 3.6 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor?\u003c\/strong\u003e It uses a twist-on closure, which secures the 18-5394 cap onto the distributor body.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-5394 is a Sierra-branded distributor cap sold under Sierra's own part number as a direct replacement for OEM 243658.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order this part?\u003c\/strong\u003e Ordering Sierra 18-5394 includes one distributor cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this cap work with older GM distributor styles?\u003c\/strong\u003e The 18-5394 is designed for the new style GM V-8 distributor with an integrated module, not the older design that uses a separate external module.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this distributor cap fit V-6 or only V-8 GM engines?\u003c\/strong\u003e The Sierra 18-5394 is designated for GM V-8 engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5394 distributor cap?\u003c\/strong\u003e The UPC for the Sierra 18-5394 distributor cap is 030999319128.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988212855003,"sku":"SIE-18-5394","price":7.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5394_lg__55927.1558127686.500.750.jpg?v=1785188158"},{"product_id":"distributor-cap-for-gm-mercruiser-v-6-thunderbolt-iv-v-hei-ignition-replaces-13753a2-815407a2-sierra-18-5396","title":"Sierra Distributor Cap 18-5396, Replaces 13753A2\/815407A2, for GM V-6 4.3L MerCruiser I\/O Engines","description":"\u003cp\u003eThe Sierra 18-5396 is a replacement distributor cap engineered for GM V-6 262 cid (4.3L) MerCruiser sterndrive and inboard engines using a contact-controlled, standard-rotation ignition distributor. It is not designed for Thunderbolt ignition systems, so it is intended specifically for the contact-controlled distributor found on the MerCruiser models and serial ranges listed below.\u003c\/p\u003e\u003cp\u003eThe cap is constructed of aluminum, zinc, or brass with a machined black exterior finish for a factory-correct appearance and a durable fit under the hood. Each 18-5396 distributor cap includes a gasket for a proper seal against moisture and contaminants at installation. As with all Sierra ignition components, the 18-5396 is built to meet or exceed the specifications of the original equipment part it replaces, making it a straightforward like-for-like swap when a distributor cap has cracked, corroded, or is arcing.\u003c\/p\u003e\u003cp\u003eThis cap covers a wide range of MerCruiser 4.3L (262 cid) V-6 applications, including the 205, 4.3L (2bbl), 4.3LX (4bbl), 4.3LH (GEN+), and 4.3L\/LH\/LX\/LXH Alpha and Bravo (GEN+) model lines across multiple serial number ranges. Always confirm the model, serial number, and ignition type before ordering, since MerCruiser 4.3L engines used several different cap and rotor combinations depending on year and configuration.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5396\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition System:\u003c\/strong\u003e Contact-controlled distributor, standard rotation (not for Thunderbolt ignition systems)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine:\u003c\/strong\u003e 262 cid (4.3L) GM V-6, MerCruiser\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum, Zinc, or Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions (L x W x H):\u003c\/strong\u003e 4.9 x 4.8 x 3.8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.57 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Distributor Cap, Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319142\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 205, 262\/V-6, 1985-1987, serial A331455-B775129\u003c\/li\u003e\n\u003cli\u003eMerCruiser 205 and 4.3LX 4bbl, 262\/V-6, 1985-1996, serial A331455-F802999\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3L (2bbl), 262\/V-6, 1988-1996, serial B773243-F802999\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3L (2bbl) (GEN+), 262\/V-6, 1998-2010, serial L010044 and up\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3L EFI (GEN+) (TBI), 262\/V-6, 1999-2001, serial L360000-M299999\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3LH (GEN+) (4bbl), 262\/V-6, 1998-2002, serial L010044-M614999\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3LX (4bbl), 262\/V-6, 1988-1996, serial B775130-F802999\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3LX (GEN+) (2bbl), 262\/V-6, 1996-1997, serial F803000-K999999\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3L\/LH\/LX\/LXH Alpha (GEN+), 1996-2001, serial F803000 and up\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3L\/LH\/LX\/LXH Bravo (GEN+), 1996-2001, serial F803000 and up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCDI E64-0013\u003c\/li\u003e\n\u003cli\u003eGLM 71500\u003c\/li\u003e\n\u003cli\u003eMallory 9-29400\u003c\/li\u003e\n\u003cli\u003e11108A3\u003c\/li\u003e\n\u003cli\u003e13753A2\u003c\/li\u003e\n\u003cli\u003e815407A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5396 distributor cap fit?\u003c\/strong\u003e The Sierra 18-5396 fits GM V-6 262 cid (4.3L) MerCruiser engines with a contact-controlled, standard-rotation distributor, including the 205, 4.3L (2bbl), 4.3LX (4bbl), 4.3LH (GEN+), and 4.3L\/LH\/LX\/LXH Alpha and Bravo (GEN+) model lines across the serial ranges listed for this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5396 replace Mercury Marine part 13753A2 or 815407A2?\u003c\/strong\u003e Yes, Sierra 18-5396 is a direct cross-reference for Mercury Marine\/MerCruiser 13753A2 and 815407A2, as well as 11108A3, CDI E64-0013, GLM 71500, and Mallory 9-29400.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this cap work with a Thunderbolt IV or V ignition system?\u003c\/strong\u003e No. The Sierra 18-5396 is a contact-controlled, standard-rotation distributor cap and does not cover Thunderbolt ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-5396 distributor cap made of?\u003c\/strong\u003e It is made of aluminum, zinc, or brass with a machined black exterior finish, matching the look and durability of the original MerCruiser cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5396 distributor cap weigh and what are its dimensions?\u003c\/strong\u003e The Sierra 18-5396 weighs 0.57 pounds and measures 4.9 x 4.8 x 3.8 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a gasket included with the 18-5396?\u003c\/strong\u003e Yes, each Sierra 18-5396 distributor cap ships with a gasket for a proper seal at installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5396 come with a rotor?\u003c\/strong\u003e No, the rotor is a separate part; Sierra's matching rotor for these MerCruiser 4.3L applications is part number 18-5432, ordered independently of the 18-5396 cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich MerCruiser serial number ranges use the 18-5396 cap?\u003c\/strong\u003e Serial ranges covered include A331455-B775129 on the 205 model, B773243-F802999 on the 4.3L (2bbl), L010044 and up on the 4.3L (2bbl) GEN+, and F803000 and up on the 4.3L\/LH\/LX\/LXH Alpha and Bravo GEN+ models, among others listed for this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5396 an OEM or aftermarket part?\u003c\/strong\u003e The 18-5396 is a Sierra aftermarket distributor cap built to meet or exceed the specifications of the original Mercury Marine\/MerCruiser equipment it replaces, including 13753A2 and 815407A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and finish does the 18-5396 have?\u003c\/strong\u003e The Sierra 18-5396 distributor cap has a black body with a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5396 distributor cap?\u003c\/strong\u003e The UPC for the Sierra 18-5396 distributor cap is 030999319142.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there a different cap for MerCruiser 4.3L TBI engines?\u003c\/strong\u003e Yes, MerCruiser 4.3L 262 TBI (GEN+) engines from serial F803800-K999999 use a different tune-up kit (18-5443) rather than the 18-5396 cap used on the contact-controlled 4.3L applications.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988212920539,"sku":"SIE-18-5396","price":27.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5396_lg__81234.1558127909.500.750.jpg?v=1785188981"},{"product_id":"sierra-18-5403-ignition-rotor-for-prestolite-7013-distributor-fits-ford-gm-6-8-cyl-replaces-mercruiser-392-9089-volvo-3853801","title":"Sierra 18-5403 Ignition Rotor for GM 6 and 8 Cylinder Engines with Prestolite Distributors, Replaces Mercury Marine 392-9089","description":"\u003cp\u003eThe Sierra 18-5403 is an ignition rotor engineered for GM 6 and 8 cylinder marine engines equipped with Prestolite conventional ignition distributors. The rotor mounts inside the distributor cap and rotates with the distributor shaft, directing the high-voltage spark from the coil to the correct spark plug wire terminal in firing order. A precise, machined exterior finish keeps electrical contact consistent, which supports reliable spark delivery and smoother engine performance during tune-ups or ignition system rebuilds.\u003c\/p\u003e\u003cp\u003eThis rotor is designed to work with Prestolite distributor numbers IBM-7011, IBM-7013, and IBM-7014A, covering GM 6 cylinder 3.8L engines as well as GM 8 cylinder 305, 350, and 454 cubic inch engines across the model years listed below. It is built as a direct equivalent to the original equipment rotor, meeting or exceeding the specifications of the parts it replaces, so it installs in place of the OEM component without modification. Each Sierra part is backed by Sierra's industry-leading customer satisfaction warranty.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5403\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Distributors:\u003c\/strong\u003e Prestolite IBM-7011, IBM-7013, IBM-7014A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e GM 6 and 8 cylinder engines with Prestolite conventional ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Model Years:\u003c\/strong\u003e 1976-82, 1983-88, 1984-88 (by engine, see Fitment)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319180\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 5 x 4 x 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1984-88, 6 cylinder, 3.8L engine, Distributor No. IBM-7014A\u003c\/li\u003e\n\u003cli\u003e1976-82, 8 cylinder, 305, 350, 454 engine, Distributor No. IBM-7011\u003c\/li\u003e\n\u003cli\u003e1983-88, 8 cylinder, 305, 350, 454 engine, Distributor No. IBM-7013\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eE65-0013\u003c\/li\u003e\n\u003cli\u003e41074\u003c\/li\u003e\n\u003cli\u003e41089\u003c\/li\u003e\n\u003cli\u003e71060\u003c\/li\u003e\n\u003cli\u003e71130\u003c\/li\u003e\n\u003cli\u003e9-29203\u003c\/li\u003e\n\u003cli\u003e9-29214\u003c\/li\u003e\n\u003cli\u003e392-9089\u003c\/li\u003e\n\u003cli\u003e392-9089T\u003c\/li\u003e\n\u003cli\u003e392-9767\u003c\/li\u003e\n\u003cli\u003e9089Q\u003c\/li\u003e\n\u003cli\u003eFI6900186\u003c\/li\u003e\n\u003cli\u003eFI6900190\u003c\/li\u003e\n\u003cli\u003e3853801\u003c\/li\u003e\n\u003cli\u003e982880\u003c\/li\u003e\n\u003cli\u003eR103004\u003c\/li\u003e\n\u003cli\u003e841907\u003c\/li\u003e\n\u003cli\u003e855845\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5403 rotor fit?\u003c\/strong\u003e The 18-5403 fits GM 6 cylinder 3.8L engines and GM 8 cylinder 305, 350, and 454 cubic inch engines that use a Prestolite conventional ignition distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich distributor numbers is this rotor designed for?\u003c\/strong\u003e This rotor is built for Prestolite distributor numbers IBM-7011, IBM-7013, and IBM-7014A.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat model years does the 18-5403 rotor cover?\u003c\/strong\u003e Coverage depends on the engine: 1984-88 for the 6 cylinder 3.8L engine on distributor IBM-7014A, 1976-82 for the 8 cylinder 305, 350, and 454 engines on distributor IBM-7011, and 1983-88 for those same 8 cylinder engines on distributor IBM-7013.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5403 a direct replacement for the OEM rotor?\u003c\/strong\u003e Yes, the 18-5403 is designed to meet or exceed the original equipment rotor it replaces and installs in the same position without modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-5403 rotor cross-reference?\u003c\/strong\u003e It replaces OEM numbers including Mercury Marine 392-9089, 392-9089T, 392-9767, 9089Q, Crusader 41074, 41089, OMC 982880, Volvo Penta 3853801, 841907, 855845, Pleasurecraft R103004, GLM 71060, 71130, Mallory 9-29203, 9-29214, CDI E65-0013, and Mercruiser FI6900186, FI6900190.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions and weight of this rotor?\u003c\/strong\u003e The 18-5403 measures 5 x 4 x 1.25 inches and weighs 0.03 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the exterior finish on the 18-5403 rotor?\u003c\/strong\u003e The 18-5403 has a machined exterior finish for consistent electrical contact inside the distributor cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this rotor work with Ford engines?\u003c\/strong\u003e No, the fitment data for the 18-5403 covers GM 6 and 8 cylinder engines only; Ford applications use a different Sierra rotor part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5403 covered under warranty?\u003c\/strong\u003e Yes, the 18-5403 rotor is covered under Sierra's customer satisfaction warranty, the same coverage applied across all Sierra parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat function does the 18-5403 rotor perform in the ignition system?\u003c\/strong\u003e It mounts on the distributor shaft and rotates to direct high-voltage spark from the ignition coil to each spark plug wire terminal in the correct firing order.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988212953307,"sku":"SIE-18-5403","price":8.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__31522.1753840680.500.750.jpg?v=1785188940"},{"product_id":"sierra-18-5397-marine-distributor-cap-for-ford-2-3l-marine-engines-with-mallory-distributor-1987-1990","title":"Sierra 18-5397 Marine Distributor Cap, Replaces Mercury Marine 815407A2, Fits Ford 2.3L with Mallory Distributor 1987-90","description":"\u003cp\u003eThe Sierra 18-5397 Distributor Cap is a direct-fit replacement distributor cap engineered for marine ignition systems that use a Mallory-style distributor, specifically the Ford 2.3L engine with Mallory Distributor covering 1987-90 applications. It is built from metal with a machined exterior finish and a white cap body, and it uses a twist-on closure for a secure, weather-resistant seal at the distributor housing. As a Sierra Marine part, it is engineered to meet the demands of high horsepower marine engines and is built to stand up to the harsh marine environment, meeting or exceeding the performance of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003eThis cap is a straightforward tune-up and ignition-maintenance component, restoring a proper seal and secure electrical connection point for the distributor rotor and spark plug wires. It ships as a single Sierra 18-5397 Distributor Cap, ready to install in place of a worn, cracked, or corroded original cap.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5397\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 8 x 6 x 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.22 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Ford 2.3L with Mallory Distributor, 1987-90\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e Mercury Marine 815407A2, Mallory 9-29418, OMC 985218\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eFord 2.3L with Mallory Distributor, 1987-90\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 815407A2\u003c\/li\u003e\n\u003cli\u003eMallory 9-29418\u003c\/li\u003e\n\u003cli\u003eOMC 985218\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5397 distributor cap fit?\u003c\/strong\u003e The Sierra 18-5397 Distributor Cap fits the Ford 2.3L engine equipped with a Mallory distributor, covering 1987-90 applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5397 a direct OEM replacement?\u003c\/strong\u003e Yes, the Sierra 18-5397 Distributor Cap directly replaces Mercury Marine 815407A2, Mallory 9-29418, and OMC 985218, so it installs in place of any of those original caps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-5397 distributor cap made from?\u003c\/strong\u003e It is made from metal with a machined exterior finish and a white cap body, matching the construction of the original Mallory-style cap it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor?\u003c\/strong\u003e The Sierra 18-5397 uses a twist-on closure, which locks the cap securely onto the distributor housing to keep out moisture and debris.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-5397 distributor cap?\u003c\/strong\u003e The Sierra 18-5397 Distributor Cap measures 8 x 6 x 4 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5397 distributor cap weigh?\u003c\/strong\u003e It weighs 0.22 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes in the box with the Sierra 18-5397?\u003c\/strong\u003e The package includes one Sierra 18-5397 Distributor Cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the Mercury Marine 815407A2 cap work as a substitute for the Sierra 18-5397?\u003c\/strong\u003e Yes, Mercury Marine 815407A2 is one of the OEM numbers the Sierra 18-5397 Distributor Cap directly replaces, along with Mallory 9-29418 and OMC 985218.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5397 built for marine use specifically?\u003c\/strong\u003e Yes, the Sierra 18-5397 Distributor Cap is engineered to meet the demands of high horsepower marine engines and is built to hold up in the harsh marine environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-5397 replace an OMC distributor cap?\u003c\/strong\u003e Yes, the Sierra 18-5397 Distributor Cap replaces OMC part number 985218.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this distributor cap be replaced?\u003c\/strong\u003e A cracked, corroded, or worn distributor cap should be replaced as part of routine ignition tune-up maintenance, and the Sierra 18-5397 is the direct-fit replacement for the Ford 2.3L Mallory distributor setup covered by this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-5397 cross-reference to a Mallory part number?\u003c\/strong\u003e Yes, it replaces Mallory 9-29418.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988213117147,"sku":"SIE-18-5397","price":52.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5397_lg__46071.1558127975.500.750.jpg?v=1785189184"},{"product_id":"sierra-18-5404-1-distributor-rotor-for-mallory-conventional-ignition-ford-gm-v-8-replaces-mercruiser-391-5088-omc-982211","title":"Sierra 18-5404-1 Distributor Rotor for Ford \u0026 GM V-8 Engines with Mallory Conventional Ignition","description":"\u003cp\u003eThe Sierra 18-5404-1 is a machined distributor rotor built for Ford and GM V-8 engines equipped with Mallory Conventional Ignition, including all Mallory distributors dated 1998 and below. It mounts in the rear position of the distributor and is engineered as a direct-fit replacement rotor that meets or exceeds the performance of the original equipment part it replaces. The rotor works alongside a matching cap and condenser as part of a complete inboard tune-up lineup, helping restore accurate spark distribution and consistent ignition timing across the RPM range.\u003c\/p\u003e\u003cp\u003eCompact and precisely machined to 0.39 x 0.39 x 0.39 inches, the 18-5404-1 is designed for durability under the heat and vibration typical of marine inboard engine compartments. It cross-references to a wide range of OEM and aftermarket part numbers, making it a straightforward replacement for boat owners servicing Chris-Craft, Chrysler, Crusader, Evinrude\/Johnson, Mercruiser, OMC, and Pleasurecraft inboard ignition systems that share the same Mallory Conventional Ignition architecture.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5404-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282244392\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Rear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Distributor Rotor (Chrysler Inboard Tune Up Kit component)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Ford \u0026amp; GM V-8 Engines With Mallory Conventional Ignition; All Mallory 1998 \u0026amp; below\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFord \u0026amp; GM V-8 Engines With Mallory Conventional Ignition\u003c\/li\u003e\n\u003cli\u003eAll Mallory distributors, 1998 and below\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eChris-Craft 16.69-00149\u003c\/li\u003e\n\u003cli\u003eChrysler 868096\u003c\/li\u003e\n\u003cli\u003eCrusader 20223\u003c\/li\u003e\n\u003cli\u003eGLM 71040\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 982211\u003c\/li\u003e\n\u003cli\u003eMallory 9-29207\u003c\/li\u003e\n\u003cli\u003eMercruiser 391-5088\u003c\/li\u003e\n\u003cli\u003eMercruiser 391-7057\u003c\/li\u003e\n\u003cli\u003eMercruiser 391-7057T\u003c\/li\u003e\n\u003cli\u003eMercruiser 391-898253029\u003c\/li\u003e\n\u003cli\u003eMercruiser 8M001224\u003c\/li\u003e\n\u003cli\u003eFI6900149\u003c\/li\u003e\n\u003cli\u003eOMC 982211\u003c\/li\u003e\n\u003cli\u003ePleasurecraft R103001\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5404-1 rotor fit?\u003c\/strong\u003e The 18-5404-1 fits Ford and GM V-8 engines equipped with Mallory Conventional Ignition, as well as all Mallory distributors dated 1998 and below.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5404-1 compatible with OEM Mercruiser rotors?\u003c\/strong\u003e Yes, the 18-5404-1 cross-references to several Mercruiser numbers including 391-5088, 391-7057, 391-7057T, 391-898253029, and 8M001224.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this rotor replace?\u003c\/strong\u003e The Sierra 18-5404-1 replaces Chris-Craft 16.69-00149, Chrysler 868096, Crusader 20223, GLM 71040, Evinrude\/Johnson 982211, Mallory 9-29207, Mercruiser 391-5088, 391-7057, 391-7057T, 391-898253029, 8M001224, FI6900149, OMC 982211, and Pleasurecraft R103001.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5404-1 rotor?\u003c\/strong\u003e This rotor measures 0.39 x 0.39 x 0.39 inches and weighs 0.04 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere does the rotor mount in the distributor?\u003c\/strong\u003e The 18-5404-1 is designed to mount in the rear position of the distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this rotor work with Chrysler inboard engines?\u003c\/strong\u003e Yes, the 18-5404-1 is part of the Chrysler Inboard Tune Up Kit lineup and cross-references to Chrysler part number 868096.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a matching cap and condenser available for this rotor?\u003c\/strong\u003e Yes, the 18-5404-1 rotor is paired with a matching Sierra distributor cap (18-5376) and condenser (18-5338) as part of the same tune-up lineup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the 18-5404-1 compare to the original equipment rotor?\u003c\/strong\u003e The Sierra 18-5404-1 is built to meet or exceed the performance of the original equipment rotor it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the 18-5404-1 rotor have?\u003c\/strong\u003e The rotor has a machined exterior finish for a precise fit and consistent electrical contact.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this rotor fit a Mallory distributor made after 1998?\u003c\/strong\u003e No, the 18-5404-1 is designed to fit all Mallory distributors dated 1998 and below, not later models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5404-1 fit Crusader or Evinrude\/Johnson engines?\u003c\/strong\u003e Yes, it cross-references to Crusader part number 20223 and Evinrude\/Johnson part number 982211.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5404-1 rotor?\u003c\/strong\u003e The Sierra 18-5404-1 distributor rotor has UPC 808282244392.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988213182683,"sku":"SIE-18-5404-1","price":8.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5404-1__07033.1722490933.500.750.jpg?v=1785188057"},{"product_id":"distributor-cap-for-mercruiser-thunderbolt-iv-v-hei-v-8-replaces-805759t3-16457a4-sierra-18-5395-includes-gasket","title":"Sierra Distributor Cap 18-5395 with Gasket, Replaces Mercury Marine 805759T1, for GM V-8 Thunderbolt IV \u0026 V HEI Ignitions","description":"\u003cp\u003eThe Sierra 18-5395 Distributor Cap is a direct-fit ignition component for GM V-8 marine engines equipped with Thunderbolt IV and Thunderbolt V HEI ignition systems. It ships complete with the gasket needed for installation, so there is no need to source a separate seal. The cap is built with a moisture-proof, molded insulator body and a high-quality conductive center carrier that maintains consistent conductor integrity for reliable spark delivery.\u003c\/p\u003e\u003cp\u003eThis is part of Sierra's MAGFORCE-compatible ignition lineup, engineered to be \"electronics friendly\" so it protects onboard electronic devices and electronic engine controls from RFI and EMI interference while still delivering maximum voltage to the ignition system. The cap features a black machined metal housing with a twist-on closure for a secure, exact-fit installation that seats correctly against the distributor body every time.\u003c\/p\u003e\u003cp\u003eThe 18-5395 is used across several MerCruiser stern-drive applications with 540 and 572 cubic inch V-8 engines, including the 500 Bulldog, 575, and 800 SC models. Every Sierra part is built to meet or exceed the performance of the original equipment part it replaces, and it is backed by Sierra's standard limited warranty.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5395\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Distributor Cap, Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Twist-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.82 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e GM V-8 Engines With Thunderbolt IV \u0026amp; V HEI Ignitions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Mercury Marine 805759T1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319135\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 500 Bulldog, 540 cid V-8, 1990-2001\u003c\/li\u003e\n\u003cli\u003eMerCruiser 575, 540 cid V-8, 1986-1992\u003c\/li\u003e\n\u003cli\u003eMerCruiser 800 SC, 572 cid V-8, 1993-1998\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Marine 805759T1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5395 distributor cap fit?\u003c\/strong\u003e The 18-5395 is designed for GM V-8 engines equipped with Thunderbolt IV and Thunderbolt V HEI ignition systems, and it is used on MerCruiser 500 Bulldog, 575, and 800 SC applications with 540 and 572 cubic inch V-8 engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5395 distributor cap include the gasket?\u003c\/strong\u003e Yes, the Sierra 18-5395 comes with the gasket included, so no separate gasket purchase is needed for installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the OEM equivalent for part number 18-5395?\u003c\/strong\u003e Sierra 18-5395 cross-references to Mercury Marine part number 805759T1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-5395 distributor cap made from?\u003c\/strong\u003e It is made from black machined metal with a moisture-proof, molded insulator construction and a conductive center carrier for consistent conductor integrity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the cap attach to the distributor?\u003c\/strong\u003e The 18-5395 uses a twist-on closure design for a secure, exact-fit installation on GM V-8 distributors with Thunderbolt IV\/V HEI ignitions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5395 distributor cap?\u003c\/strong\u003e The cap measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5395 weigh?\u003c\/strong\u003e The distributor cap weighs 0.82 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5395 an OEM or aftermarket part?\u003c\/strong\u003e It is an aftermarket Sierra replacement part engineered to meet or exceed the performance of the original equipment distributor cap it replaces, including the Mercury Marine 805759T1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5395 protect onboard electronics from interference?\u003c\/strong\u003e Yes, this cap is built to be electronics friendly, shielding electronic devices and electronic engine controls from RFI and EMI while still delivering maximum voltage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat MerCruiser models use the 18-5395 distributor cap?\u003c\/strong\u003e It is used on the MerCruiser 500 Bulldog (1990-2001), 575 (1986-1992), and 800 SC (1993-1998), all 540 or 572 cubic inch V-8 configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a warranty included with the 18-5395 distributor cap?\u003c\/strong\u003e Yes, the Sierra 18-5395 is covered under Sierra's standard limited warranty.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988213215451,"sku":"SIE-18-5395","price":42.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5395_lg__69545.1558127815.500.750.jpg?v=1785188581"},{"product_id":"sierra-18-5407-marine-ignition-rotor-replaces-mercruiser-392-6326-omc-980892-fits-prestolite-8-cylinder-distributors","title":"Sierra 18-5407 Marine Distributor Rotor for Prestolite 8-Cylinder Ignition, Replaces 392-6326","description":"\u003cp\u003eThe Sierra 18-5407 is a marine distributor rotor engineered for Prestolite 8-cylinder ignition systems. It is the rotor component of the Sierra 18-5250 tune-up kit, which also includes a matching contact set (18-5303) and condenser (18-5345), so it is built to work as part of a complete ignition service rather than as a standalone guess-fit part. The rotor features a machined exterior finish for accurate, repeatable contact within the distributor cap, helping maintain correct spark timing and distribution to each cylinder.\u003c\/p\u003e\u003cp\u003eThis rotor is a direct fit for engines using a Prestolite 8-cylinder distributor and cross-references to a wide range of OEM and aftermarket part numbers used across Chrysler Inboard, Crusader, Mercury Marine\/Mercruiser, OMC, and Pleasurecraft applications, making it a practical replacement when the original part number is hard to find. Sierra manufactures the part to meet or exceed original equipment quality standards, using marine-grade materials suited to the moisture and vibration a boat engine compartment sees. Because ignition timing accuracy depends on a properly seated, correctly sized rotor, installers should confirm the part number against the distributor being serviced before installing.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5407\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDescription:\u003c\/strong\u003e Rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributor Type:\u003c\/strong\u003e Prestolite 8 cyl.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTune-Up Kit Component Of:\u003c\/strong\u003e 18-5250\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 1.06 x 4 x 5.12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319197\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eEngines equipped with a Prestolite 8-cylinder distributor\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCDI E65-0011\u003c\/li\u003e\n\u003cli\u003eChrysler Inboard 1658535\u003c\/li\u003e\n\u003cli\u003eCrusader 41059\u003c\/li\u003e\n\u003cli\u003eGLM 71050\u003c\/li\u003e\n\u003cli\u003eMallory 9-29201\u003c\/li\u003e\n\u003cli\u003eMercruiser Stern Drive 392-6326\u003c\/li\u003e\n\u003cli\u003e392-6326T\u003c\/li\u003e\n\u003cli\u003eFI6900044\u003c\/li\u003e\n\u003cli\u003eOMC Inboard 980892\u003c\/li\u003e\n\u003cli\u003eOMC Stern Drive 980892\u003c\/li\u003e\n\u003cli\u003ePleasurecraft R103003\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5407 rotor fit?\u003c\/strong\u003e It is designed for engines that use a Prestolite 8-cylinder distributor, and it is the rotor included in the Sierra 18-5250 tune-up kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5407 the same as the OEM 392-6326 rotor?\u003c\/strong\u003e Yes, 392-6326 and 392-6326T are among the OEM numbers the 18-5407 rotor replaces, along with Chrysler Inboard 1658535, Crusader 41059, GLM 71050, Mallory 9-29201, FI6900044, OMC 980892, and Pleasurecraft R103003.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-5407 rotor made of, and how is it finished?\u003c\/strong\u003e The rotor has a machined exterior finish, giving it precise, repeatable contact inside the distributor cap for accurate spark distribution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions and weight of this rotor?\u003c\/strong\u003e The Sierra 18-5407 measures 1.06 x 4 x 5.12 inches and weighs 0.05 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5407 come with a contact set and condenser?\u003c\/strong\u003e No, the rotor is sold on its own with part number 18-5407, but it is also the rotor component used in the Sierra 18-5250 tune-up kit alongside a separate contact set (18-5303) and condenser (18-5345).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this rotor work with a Delco distributor instead of a Prestolite one?\u003c\/strong\u003e The 18-5407 is built for Prestolite 8-cylinder distributors; a different rotor is used for Delco 4 and 6-cylinder distributor setups, so confirm your distributor type before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5407 a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e It is a genuine Sierra International part, manufactured to meet or exceed original equipment quality standards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my old rotor matches the 18-5407?\u003c\/strong\u003e Check your existing rotor or distributor for any of the cross-reference numbers this part replaces, including 392-6326, 1658535, 41059, 71050, 9-29201, 980892, or R103003; a match confirms the 18-5407 is the correct replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the distributor rotor on a marine engine?\u003c\/strong\u003e A rotor like the Sierra 18-5407 is typically replaced during a routine ignition tune-up alongside the contact set and condenser, since worn rotor contacts can cause misfires or hard starting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5407 rotor?\u003c\/strong\u003e The Sierra 18-5407 rotor carries UPC 030999319197.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988213412059,"sku":"SIE-18-5407","price":12.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5407_lg__47672.1558128418.500.750.jpg?v=1785187990"},{"product_id":"sierra-18-5418-distributor-rotor-for-gm-4-cylinder-single-point-ignition-replaces-chris-craft-16-69-00051-and-omc-384735","title":"Sierra Distributor Rotor 18-5418 for MerCruiser 110\/120\/140 I\/O Ignition, Replaces Mercury Marine 58217","description":"\u003cp\u003eThe Sierra 18-5418 is a distributor rotor built for MerCruiser stern drive ignition systems using a contact-controlled distributor with standard rotation (this rotor is not for Thunderbolt ignition applications). It is the rotor position specified in the MerCruiser tune-up parts breakdown for the 110, 120, and 140 model engines, all of which use a 4-cylinder inline engine (153 cid or 181 cid) paired with a points-and-condenser style distributor. The rotor mounts inside the distributor cap and rotates with the distributor shaft to direct spark from the coil to each spark plug tower in firing order, so a worn, cracked, or burned rotor tip is a common cause of misfires, hard starting, or a rough idle on these engines.\u003c\/p\u003e\u003cp\u003eAs part of a complete tune-up, the 18-5418 rotor is typically replaced alongside the contact set, distributor cap, coil, and spark plug wires that share the same engine application. It is sold as a direct-fit component for the MerCruiser 110, 120, and 140 model engines within the serial number ranges covered by those models, and it cross-references to OEM rotors used by Chris-Craft, Mercury Marine, and OMC on the same ignition platform.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5418\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Contact-controlled distributor, standard rotation, excludes Thunderbolt ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Engines:\u003c\/strong\u003e 153 cid L4, 181 cid L4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Models:\u003c\/strong\u003e MerCruiser 110, 120, 140\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 1 x 1 x 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999236708\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 110, 153 cid L4, years 1963-1966, serial number range 1537370-2044033\u003c\/li\u003e\n\u003cli\u003eMerCruiser 120, 153 cid L4, years 1964-1986, serial number range 1666601-B531853\u003c\/li\u003e\n\u003cli\u003eMerCruiser 140, 181 cid L4, years 1968-1986, serial number range 2508261-B450800\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eChris-Craft 16.69-00051\u003c\/li\u003e\n\u003cli\u003eMercury Marine 58217\u003c\/li\u003e\n\u003cli\u003eOMC 384735\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5418 rotor fit?\u003c\/strong\u003e The 18-5418 rotor fits MerCruiser 110, 120, and 140 model engines, which use a 153 cid or 181 cid L4 engine paired with a contact-controlled distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this rotor work with a Thunderbolt ignition system?\u003c\/strong\u003e No, the 18-5418 rotor is built for contact-controlled distributors with standard rotation and is not intended for Thunderbolt ignition applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the OEM equivalent of Sierra part 18-5418?\u003c\/strong\u003e Sierra 18-5418 cross-references to Chris-Craft 16.69-00051, Mercury Marine 58217, and OMC 384735, making it a direct replacement for those OEM rotors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5418 rotor weigh?\u003c\/strong\u003e The Sierra 18-5418 distributor rotor weighs 0.03 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this rotor?\u003c\/strong\u003e The 18-5418 rotor measures 1 x 1 x 2 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial number range applies to the MerCruiser 120 with this rotor?\u003c\/strong\u003e For the MerCruiser 120, the 18-5418 rotor applies to serial number range 1666601 through B531853, covering years 1964-1986.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this rotor sold individually or as part of a kit?\u003c\/strong\u003e The 18-5418 is sold as an individual rotor; it is one of the components listed in the MerCruiser tune-up parts breakdown alongside the contact set, distributor cap, coil, and spark plug wires.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat years does the 18-5418 rotor cover for the MerCruiser 110?\u003c\/strong\u003e For the MerCruiser 110, the 18-5418 rotor covers model years 1963-1966, within serial number range 1537370-2044033.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5418 rotor fit the MerCruiser 140?\u003c\/strong\u003e Yes, the MerCruiser 140 (181 cid L4) uses the 18-5418 rotor for model years 1968-1986, serial number range 2508261-B450800.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate a distributor rotor needs replacement?\u003c\/strong\u003e A worn, cracked, or burned rotor tip on the ignition system that the 18-5418 fits can cause misfires, hard starting, or a rough idle, since the rotor directs spark from the coil to each spark plug in firing order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5418 a genuine or aftermarket part?\u003c\/strong\u003e The 18-5418 is a Sierra-brand replacement rotor manufactured to match the fit and function of the original Chris-Craft, Mercury Marine, and OMC rotors it cross-references.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988213510363,"sku":"SIE-18-5418","price":4.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5418_lg__04803.1558128628.500.750.jpg?v=1785188045"},{"product_id":"sierra-18-5406-distributor-rotor-for-gm-4-cylinder-delco-est-ignition-replaces-omc-986651-mercruiser-811636","title":"Sierra 18-5406 Delco Distributor Rotor, Replaces OMC 986651, for GM 4 Cylinder Marine Engines with Delco EST Ignition","description":"\u003cp\u003eThe Sierra 18-5406 is a Delco-style distributor rotor built as a direct replacement for marine ignition systems using a Delco EST distributor. It mounts inside the distributor cap and rotates with the distributor shaft to direct high-voltage current from the coil to each spark plug lead in firing order, making it a core wear item in any tune-up or ignition service. The rotor is designed to fit GM 4 cylinder engines equipped with Delco EST ignition, a common configuration on inboard marine powerplants. Its contact surface has a machined finish for reliable, consistent electrical contact with the distributor cap terminals. Sierra engineers this rotor to meet or exceed the performance of the original equipment part it replaces, and it cross-references directly to OMC, GLM, Mallory, Mercruiser, and Volvo Penta part numbers, so it is a straightforward swap whether you are doing a routine ignition tune-up or replacing a worn or cracked rotor. As with all Sierra parts, it is intended to restore factory ignition performance and is backed by Sierra's standard product warranty.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5406\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Rotor (Delco style)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e GM 4 Cylinder marine engines with Delco EST ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999563736\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThis rotor fits GM 4 Cylinder marine engines equipped with Delco EST ignition.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC 986651\u003c\/li\u003e\n\u003cli\u003eGLM 71120\u003c\/li\u003e\n\u003cli\u003eMallory 9-29220\u003c\/li\u003e\n\u003cli\u003eMercruiser 811636\u003c\/li\u003e\n\u003cli\u003eMercruiser 898253011\u003c\/li\u003e\n\u003cli\u003eMercruiser 811636-1\u003c\/li\u003e\n\u003cli\u003eMercruiser 8M001254\u003c\/li\u003e\n\u003cli\u003eMercruiser 802468\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 3854261\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5406 rotor fit?\u003c\/strong\u003e The Sierra 18-5406 is designed for GM 4 Cylinder marine engines equipped with Delco EST ignition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5406 a genuine OEM part or aftermarket?\u003c\/strong\u003e It is a Sierra aftermarket replacement rotor, engineered to meet or exceed the performance of the original equipment rotor it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-5406 rotor cross-reference to?\u003c\/strong\u003e The Sierra 18-5406 replaces OMC 986651, GLM 71120, Mallory 9-29220, Mercruiser 811636, 898253011, 811636-1, and 8M001254, Mercruiser 802468, and Volvo Penta 3854261.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5406 distributor rotor weigh?\u003c\/strong\u003e The Sierra 18-5406 rotor weighs 0.03 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the rotor's contact surface have?\u003c\/strong\u003e The Sierra 18-5406 rotor has a machined finish on its contact surface for consistent electrical contact inside the distributor cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order part number 18-5406?\u003c\/strong\u003e The order includes one Sierra 18-5406 rotor; a matching Sierra distributor cap is sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this rotor work with a Delco EST distributor cap from another brand?\u003c\/strong\u003e Yes, the Sierra 18-5406 is a Delco-style rotor that cross-references to OMC, GLM, Mallory, Mercruiser, and Volvo Penta equivalents, so it fits distributor caps built for those same Delco EST applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the distributor rotor be replaced?\u003c\/strong\u003e A distributor rotor like the Sierra 18-5406 should be replaced during a routine ignition tune-up or whenever the contact tip shows wear, pitting, or cracking that can cause misfires.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes Sierra offer a warranty on the 18-5406 rotor?\u003c\/strong\u003e Yes, the Sierra 18-5406 rotor is covered under Sierra's standard product warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs installation of the 18-5406 rotor straightforward?\u003c\/strong\u003e The Sierra 18-5406 is a direct-fit replacement rotor that installs onto the distributor shaft in place of the original Delco-style rotor, using the same mounting configuration as the OEM part.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988213575899,"sku":"SIE-18-5406","price":6.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5406_lg__45826.1558128354.500.750.jpg?v=1785189068"},{"product_id":"marine-distributor-rotor-for-new-gm-style-module-in-cap-v-8-distributors-replaces-mercruiser-898253010-and-omc-volvo-penta-3854549-sierra-18-5405","title":"Sierra 18-5405 Ignition Rotor for MerCruiser 350 MAG MPI V-8, GM Module-in-Cap Distributors","description":"\u003cp\u003eThe Sierra 18-5405 is an ignition distributor rotor built for GM-style \"module in cap\" V-8 distributor applications, including MerCruiser 350 MAG MPI engines equipped with contact-controlled distributors running standard rotation (this rotor does not apply to Thunderbolt ignition systems). The rotor is the component inside the distributor cap that spins with the distributor shaft to route the high-voltage spark from the ignition coil to the correct spark plug wire terminal in firing order, so its fit and contact geometry directly affect spark timing and engine reliability.\u003c\/p\u003e\u003cp\u003eFinished in white, the rotor measures 3 x 2 x 2 inches and weighs 0.06 pounds, making it a compact, easy-to-stock replacement part for a tune-up or distributor cap and rotor service. It is manufactured to meet or exceed the specifications of the original equipment part it replaces, and is commonly paired with a matching distributor cap, contact set, and ignition coil when performing a full ignition tune-up on covered engines.\u003c\/p\u003e\u003cp\u003eThis rotor is confirmed for MerCruiser 350 MAG MPI (GEN +) 350 cid V-8 engines, model year 1998 within serial number range L010019-L325962; 350 MAG MPI MIE (GEN +) 350 cid V-8 engines, model year 1998 within serial number range L002008-L302199; and 350 MAG MPI SKI 350 cid V-8 engines, model years 1995-1998 within serial number range F350583-L304599.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5405\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999563729\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions (L x W x H):\u003c\/strong\u003e 3 x 2 x 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.06 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition System Type:\u003c\/strong\u003e Contact controlled distributor, standard rotation, excludes Thunderbolt ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributor Style:\u003c\/strong\u003e GM style module in cap, V-8 application\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 350 MAG MPI (GEN +) 350\/V-8, 1998, Serial L010019-L325962\u003c\/li\u003e\n\u003cli\u003eMerCruiser 350 MAG MPI MIE (GEN +) 350\/V-8, 1998, Serial L002008-L302199\u003c\/li\u003e\n\u003cli\u003eMerCruiser 350 MAG MPI SKI 350\/V-8, 1995-1998, Serial F350583-L304599\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCrusader 38071\u003c\/li\u003e\n\u003cli\u003eGLM 71100\u003c\/li\u003e\n\u003cli\u003eMallory 9-29209\u003c\/li\u003e\n\u003cli\u003eMercruiser 898253010\u003c\/li\u003e\n\u003cli\u003eMercruiser 808484-1\u003c\/li\u003e\n\u003cli\u003eMercruiser 804423\u003c\/li\u003e\n\u003cli\u003eMercruiser 8M6001253\u003c\/li\u003e\n\u003cli\u003eOMC 3854549\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 3854549-7\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 3862014\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-5405 rotor used for?\u003c\/strong\u003e The Sierra 18-5405 is an ignition distributor rotor that mounts inside the distributor cap and routes spark from the coil to each spark plug wire terminal in firing order, and it is designed for GM style module in cap V-8 distributors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5405 rotor fit my MerCruiser 350 MAG MPI?\u003c\/strong\u003e Yes, on the 350 MAG MPI (GEN +) 350\/V-8 built in 1998 within serial number range L010019-L325962, and on the 350 MAG MPI MIE (GEN +) 350\/V-8 also built in 1998 within serial number range L002008-L302199 - check your engine serial number against these ranges before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5405 rotor work on MerCruiser 350 MAG MPI SKI engines?\u003c\/strong\u003e Yes, the Sierra 18-5405 covers the 350 MAG MPI SKI 350\/V-8, model years 1995-1998, within serial number range F350583-L304599.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this rotor work with Thunderbolt ignition systems?\u003c\/strong\u003e No, the Sierra 18-5405 is built for contact controlled distributors with standard rotation and specifically excludes Thunderbolt ignition applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-5405 rotor replace?\u003c\/strong\u003e It is interchangeable with Crusader 38071, GLM 71100, Mallory 9-29209, Mercruiser 898253010, 808484-1, and 804423, 8M6001253, OMC 3854549, and Volvo Penta 3854549-7 and 3862014.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and material is the 18-5405 rotor?\u003c\/strong\u003e The rotor is white and is sized at 3 x 2 x 2 inches, weighing 0.06 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5405 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e It is an aftermarket replacement rotor manufactured by Sierra to meet or exceed the specifications of the original equipment rotor it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many rotors come in a package of the 18-5405?\u003c\/strong\u003e One Sierra 18-5405 rotor is included per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of distributor does the 18-5405 rotor fit?\u003c\/strong\u003e It fits GM style module in cap distributors used in V-8 applications, specifically contact controlled distributors running standard rotation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace the distributor cap at the same time as the 18-5405 rotor?\u003c\/strong\u003e During a full ignition tune-up, the rotor is commonly replaced alongside the distributor cap, contact set, and coil to restore complete ignition performance, though the 18-5405 itself is sold as the rotor only.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988213674203,"sku":"SIE-18-5405","price":13.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__01083.1753840681.500.750.jpg?v=1785189068"},{"product_id":"sierra-18-5428-distributor-rotor-for-volvo-penta-ignition-replaces-oem-243903","title":"Sierra Distributor Rotor 18-5428, OEM 243903, Volvo Penta I\/O Ignition, Bosch 4 Cylinder Distributors","description":"\u003cp\u003eThe Sierra 18-5428 is a distributor rotor built for Volvo Penta I\/O ignition systems using Bosch 4 cylinder distributors. The rotor is the component inside the distributor cap that spins on the distributor shaft and directs the high-voltage spark from the ignition coil to the correct spark plug wire terminal in firing order. A worn, pitted, or cracked rotor causes misfires, hard starting, rough idle, or a no-start condition, so it is a standard wear item to replace along with the distributor cap and points during a tune-up.\u003c\/p\u003e\u003cp\u003eThis rotor is designed as a direct fit for Bosch 4 cylinder distributors used in Volvo Penta I\/O (inboard\/outboard) applications, and it corresponds to the original 243903 part number. It is a lightweight, precision-molded component sized to match factory tolerances for correct spark timing and contact alignment inside the distributor cap.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5428\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e I\/O - Volvo Penta Ignition System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributor Type:\u003c\/strong\u003e Bosch 4 cylinder\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eVolvo Penta I\/O ignition systems with Bosch 4 cylinder distributors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e243903\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-5428 rotor used for?\u003c\/strong\u003e The Sierra 18-5428 is a distributor rotor that fits inside the distributor cap and directs spark from the ignition coil to each spark plug wire in firing order, used on Volvo Penta I\/O ignition systems with Bosch 4 cylinder distributors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5428 rotor fit Volvo Penta engines?\u003c\/strong\u003e Yes, the 18-5428 rotor is designed for Volvo Penta I\/O ignition systems that use a Bosch 4 cylinder distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-5428 replace?\u003c\/strong\u003e The Sierra 18-5428 rotor corresponds to OEM part number 243903.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5428 rotor weigh?\u003c\/strong\u003e The 18-5428 rotor weighs 0.04 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5428 rotor work with a Delco distributor?\u003c\/strong\u003e No, the 18-5428 rotor is built for Bosch 4 cylinder distributors used in Volvo Penta I\/O ignition systems, not Delco distributor applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should a distributor rotor like the 18-5428 be replaced?\u003c\/strong\u003e A distributor rotor should be replaced when it shows pitting, burn marks, or cracking, or as part of a routine ignition tune-up alongside the distributor cap, since a worn rotor causes misfires, rough idle, or hard starting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5428 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e The Sierra 18-5428 is an aftermarket replacement rotor manufactured to match the fit and function of OEM part 243903.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-5428?\u003c\/strong\u003e The 18-5428 order includes one distributor rotor; it does not include the distributor cap, condenser, or other tune-up components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 18-5428 rotor and the 18-5402 rotor?\u003c\/strong\u003e The 18-5428 rotor is designed for Bosch 4 cylinder distributors in Volvo Penta I\/O ignition systems, while the 18-5402 rotor is a different part designed for Delco EST V-8 distributors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install the 18-5428 rotor myself?\u003c\/strong\u003e Yes, the 18-5428 rotor is a standard distributor component that installs onto the distributor shaft in place of the old rotor, a task commonly done during routine ignition maintenance.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988213706971,"sku":"SIE-18-5428","price":14.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5428_lg__69090.1558128908.500.750.jpg?v=1785329155"},{"product_id":"distributor-rotor-for-chrysler-inboard-v8-replaces-oem-868095-fits-prestolite-8-cylinder-marine-distributors","title":"Sierra Rotor 18-5430 for Chrysler Marine 6-Cylinder HCS, LHS Engines (Replaces Chrysler Inboard 868095)","description":"\u003cp\u003eThe Sierra Rotor 18-5430 is a distributor rotor engineered for Chrysler Marine 6-cylinder inboard engines, including the HCS and LHS models. As part of the distributor cap and rotor assembly, the rotor rotates inside the distributor cap and directs high-voltage current from the ignition coil to the correct spark plug terminal in firing order, making it a core component of a proper ignition tune-up. Replacing a worn, cracked, or burned rotor restores consistent spark distribution, which helps prevent misfires, hard starting, and rough idle caused by a deteriorated ignition contact.\u003c\/p\u003e\u003cp\u003eThis rotor is manufactured to fit the same mounting and contact specifications as the original Chrysler Marine equipment, allowing for straightforward installation as part of a routine tune-up or ignition system service. It is commonly replaced alongside the distributor cap, points, and condenser on 6-cylinder HCS and LHS Chrysler Marine inboard engines. The Sierra Rotor 18-5430 carries the Sierra brand's part number 18-5430 and cross-references to Chrysler Inboard part number 868095.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5430\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319296\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Rotor (1 count)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e CHRYSLER INBOARD 868095\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 1955-57 6-cylinder Chrysler Marine HCS, LHS\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1955-57 Chrysler Marine 6-cylinder HCS, LHS inboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eChrysler Inboard 868095\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra Rotor 18-5430 fit?\u003c\/strong\u003e The Sierra Rotor 18-5430 fits 1955-57 Chrysler Marine 6-cylinder inboard engines, specifically the HCS and LHS models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5430 rotor an OEM replacement or aftermarket part?\u003c\/strong\u003e It is an aftermarket rotor manufactured by Sierra to cross-reference with Chrysler Inboard part number 868095, giving it the same fit and function as the original equipment rotor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-5430 replace?\u003c\/strong\u003e This rotor replaces Chrysler Inboard part number 868095 on applicable 6-cylinder HCS and LHS Chrysler Marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5430 rotor weigh?\u003c\/strong\u003e It weighs 0.04 pounds, consistent with a small distributor rotor component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order part 18-5430?\u003c\/strong\u003e Each order includes one Sierra Rotor, part number 18-5430; the distributor cap, points, and condenser are separate components not included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the rotor on my Chrysler Marine engine?\u003c\/strong\u003e The rotor should be replaced whenever it shows burning, pitting, or cracking at the contact tip, or as part of a routine ignition tune-up alongside the distributor cap, points, and condenser.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install the 18-5430 rotor myself?\u003c\/strong\u003e Yes, the Sierra Rotor 18-5430 is designed to install the same way as the original Chrysler equipment rotor, making it a straightforward part of a distributor tune-up on 6-cylinder HCS and LHS engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-5430 rotor made from?\u003c\/strong\u003e The dossier for this Sierra 18-5430 rotor does not specify the exact material composition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5430 rotor fit both 4-cylinder and 6-cylinder Chrysler Marine engines?\u003c\/strong\u003e No, part 18-5430 is designated for the 1955-57 6-cylinder Chrysler Marine HCS and LHS engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra Rotor 18-5430?\u003c\/strong\u003e The UPC for this Sierra Rotor is 030999319296.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988213805275,"sku":"SIE-18-5430","price":6.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5430_lg__28294.1558129049.500.750.jpg?v=1785188898"},{"product_id":"sierra-18-5408-distributor-rotor-replaces-mercruiser-850485-omc-volvo-penta-3854311-fits-gm-v6-module-in-cap-distributors","title":"Sierra 18-5408 Distributor Rotor for GM Module in Cap V-6 Distributors, Replaces Mercruiser 850485","description":"\u003cp\u003eThe Sierra 18-5408 Rotor is a distributor rotor built for New GM Style \"Module in Cap\" distributors used in V-6 applications. It is designed to work as a matched pair with the 18-5354 distributor cap, forming the ignition rotor\/cap combination that directs spark to the correct cylinder in sequence as the distributor shaft turns. The rotor is constructed of alloy steel with a machined finish for a precise, reliable fit inside the distributor cap and consistent electrical contact against the cap's terminals.\u003c\/p\u003e\u003cp\u003eThis part is intended as a direct service replacement for worn or pitted rotors on GM V-6 marine engines equipped with module-in-cap distributor ignition systems. A worn rotor can cause misfires, hard starting, and rough idle, so replacing it along with the distributor cap during a routine tune-up helps keep ignition timing accurate across all cylinders. The Sierra 18-5408 is manufactured to meet or exceed the performance of the original equipment rotor it replaces and cross-references to common Mercruiser, OMC, Volvo Penta, GLM, and Mallory part numbers used on the same GM V-6 module-in-cap distributor platform.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5408\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e New GM Style \"Module in Cap\" Distributors, V-6 Applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompanion Distributor Cap:\u003c\/strong\u003e 18-5354\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e GLM 71110, Mallory 9-29221, Mercruiser 850485, 898253012, 850485-1, 8M0062084, 804424, OMC 3854311, Volvo Penta 3854311-2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNew GM Style \"Module in Cap\" Distributors, V-6 Applications\u003c\/li\u003e\n\u003cli\u003eUse with 18-5354 distributor cap\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 71110\u003c\/li\u003e\n\u003cli\u003eMallory 9-29221\u003c\/li\u003e\n\u003cli\u003eMercruiser 850485\u003c\/li\u003e\n\u003cli\u003e898253012\u003c\/li\u003e\n\u003cli\u003e850485-1\u003c\/li\u003e\n\u003cli\u003e8M0062084\u003c\/li\u003e\n\u003cli\u003e804424\u003c\/li\u003e\n\u003cli\u003eOMC 3854311\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 3854311-2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5408 rotor fit?\u003c\/strong\u003e The Sierra 18-5408 is built for New GM Style \"Module in Cap\" distributors used in V-6 applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich distributor cap should I use with this rotor?\u003c\/strong\u003e Pair the Sierra 18-5408 rotor with the 18-5354 distributor cap for a correct module-in-cap V-6 ignition setup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5408 the same as a Mercruiser 850485 rotor?\u003c\/strong\u003e Yes, the Sierra 18-5408 cross-references to Mercruiser part numbers 850485 and 850485-1, along with 898253012 and 8M0062084, for the same GM module-in-cap V-6 distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this rotor cross-reference to OMC or Volvo Penta numbers?\u003c\/strong\u003e Yes, the Sierra 18-5408 replaces OMC 3854311 and Volvo Penta 3854311-2, in addition to GLM 71110 and Mallory 9-29221.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-5408 rotor made from?\u003c\/strong\u003e It is made of alloy steel with a machined finish for accurate fit and reliable electrical contact inside the distributor cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5408 rotor weigh?\u003c\/strong\u003e The Sierra 18-5408 rotor weighs 0.03 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many rotors come in a package?\u003c\/strong\u003e Each package of the Sierra 18-5408 contains 1 rotor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5408 genuine OEM or aftermarket?\u003c\/strong\u003e The Sierra 18-5408 is a Sierra-brand aftermarket replacement part manufactured to meet or exceed the performance of the original equipment rotor it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this rotor work with a V-8 module-in-cap distributor?\u003c\/strong\u003e No, the 18-5408 is designed for V-6 module-in-cap distributor applications; V-8 module-in-cap setups use a different rotor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the distributor rotor?\u003c\/strong\u003e A worn or pitted rotor like the 18-5408 should be replaced when experiencing misfires, hard starting, or rough idle, typically alongside the 18-5354 distributor cap during a tune-up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5408 rotor include the distributor cap?\u003c\/strong\u003e No, the Sierra 18-5408 is the rotor only; the matching 18-5354 distributor cap is a separate part.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988216131803,"sku":"SIE-18-5408","price":8.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5408_lg__98667.1558128459.500.750.jpg?v=1785188117"},{"product_id":"distributor-rotor-for-mercury-mercruiser-13524a6-gm-v-6-thunderbolt-iv-v-hei-ignition","title":"Sierra 18-5432 Rotor Assembly for MerCruiser 4.3L 262 cid V-6 Engines, Replaces Mercury Marine 13524A6","description":"\u003cp\u003eThe Sierra 18-5432 Rotor Assembly is a distributor rotor built for MerCruiser inboard\/outboard engines equipped with a contact-controlled distributor running standard rotation. It is designed for GM-based 262 cid V-6 MerCruiser powerheads across a range of model years and serial number ranges, including the 205, 4.3L (2bbl), 4.3L (2bbl) GEN+, 4.3L EFI (GEN+\/TBI), 4.3LH (GEN+, 4bbl), 4.3LX (4bbl), 4.3LX (GEN+, 2bbl), and the 4.3L\/LH\/LX\/LXH V6 Alpha (Gen+) and Bravo (Gen+) drive combinations. This rotor is intended for contact-controlled distributor ignition systems and is not designed for Thunderbolt ignition setups.\u003c\/p\u003e\u003cp\u003eThe rotor features a machined exterior finish and mounts inside the distributor cap, where it directs spark from the coil to the correct spark plug wire terminal as the distributor shaft rotates. It ships as a single rotor assembly (one unit per package) and is commonly replaced as part of a routine ignition tune-up alongside the distributor cap, contact set, coil, and spark plug wires. Sierra manufactures this part to meet or exceed the specification of the original equipment component it replaces, making it a straightforward direct-fit replacement for the applicable MerCruiser V-6 engines.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5432\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Rotor Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributor Type:\u003c\/strong\u003e Contact-controlled, standard rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Compatibility:\u003c\/strong\u003e Not for Thunderbolt ignition systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e GM 262 cid V-6, MerCruiser I\/O\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.17 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319319\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Mercury Marine 13524A6, 13524A4, 13524Q06, 19405A4, 90576A5; CDI E65-0004; GLM 71070; Mallory 9-29218\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel 205, 262 cid V-6, 1985-1987, Serial# A331455 - B775129\u003c\/li\u003e\n\u003cli\u003eModel 4.3L (2bbl), 262 cid V-6, 1988-1996, Serial# B773243 - F802999\u003c\/li\u003e\n\u003cli\u003eModel 4.3L (2bbl) GEN+, 262 cid V-6, 1998-2010, Serial# L010044 \u0026amp; UP\u003c\/li\u003e\n\u003cli\u003eModel 4.3L EFI (GEN+, TBI), 262 cid V-6, 1999-2001, Serial# L360000 - M299999\u003c\/li\u003e\n\u003cli\u003eModel 4.3LH (GEN+, 4bbl), 262 cid V-6, 1998-2002, Serial# L010044 - M614999\u003c\/li\u003e\n\u003cli\u003eModel 4.3LX (4bbl), 262 cid V-6, 1988-1996, Serial# B775130 - F802999\u003c\/li\u003e\n\u003cli\u003eModel 4.3LX (GEN+, 2bbl), 262 cid V-6, 1996-1997, Serial# F803000 - K999999\u003c\/li\u003e\n\u003cli\u003eModel 4.3L\/LH\/LX\/LXH V6, Alpha (Gen+), 1996-2001, Serial# F803000 \u0026amp; UP\u003c\/li\u003e\n\u003cli\u003eModel 4.3L\/LH\/LX\/LXH V6, Bravo (Gen+), 1996-2001, Serial# F803000 \u0026amp; UP\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 13524A6\u003c\/li\u003e\n\u003cli\u003eMercury Marine 13524A4\u003c\/li\u003e\n\u003cli\u003eMercury Marine 13524Q06\u003c\/li\u003e\n\u003cli\u003eMercury Marine 19405A4\u003c\/li\u003e\n\u003cli\u003eMercury Marine 90576A5\u003c\/li\u003e\n\u003cli\u003eCDI E65-0004\u003c\/li\u003e\n\u003cli\u003eGLM 71070\u003c\/li\u003e\n\u003cli\u003eMallory 9-29218\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5432 rotor fit?\u003c\/strong\u003e The 18-5432 rotor fits MerCruiser inboard\/outboard engines with a 262 cid GM V-6 and a contact-controlled, standard-rotation distributor, covering models such as the 205, 4.3L (2bbl), 4.3L (2bbl) GEN+, 4.3L EFI (GEN+\/TBI), 4.3LH (GEN+, 4bbl), 4.3LX (4bbl and GEN+\/2bbl), and the 4.3L\/LH\/LX\/LXH V6 Alpha (Gen+) and Bravo (Gen+) combinations, within the serial number ranges specified for each model.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this rotor work with a Thunderbolt ignition system?\u003c\/strong\u003e No. The 18-5432 rotor is built for contact-controlled distributors with standard rotation and is not intended for engines with Thunderbolt ignition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the OEM equivalent of Sierra part 18-5432?\u003c\/strong\u003e Sierra 18-5432 is a direct cross-reference to Mercury Marine 13524A6, and it also interchanges with Mercury Marine 13524A4, 13524Q06, 19405A4, and 90576A5, as well as CDI E65-0004, GLM 71070, and Mallory 9-29218.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5432 rotor weigh?\u003c\/strong\u003e The Sierra 18-5432 Rotor Assembly weighs 0.17 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many rotors come in the package?\u003c\/strong\u003e One rotor assembly is included per package of Sierra part 18-5432.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the rotor have?\u003c\/strong\u003e Sierra 18-5432 has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5432 rotor genuine Sierra or aftermarket?\u003c\/strong\u003e It is a genuine Sierra-manufactured part, built to meet or exceed the specification of the original equipment rotor it replaces rather than being a generic aftermarket copy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the distributor rotor on my MerCruiser engine?\u003c\/strong\u003e The rotor is typically replaced during a routine ignition tune-up along with the distributor cap, contact set, coil, and spark plug wires, or when ignition misfire symptoms point to worn distributor components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5432 rotor fit both 2-barrel and 4-barrel 4.3L engines?\u003c\/strong\u003e Yes, within the applicable serial number ranges the 18-5432 rotor fits 4.3L (2bbl), 4.3LX (4bbl), 4.3LH (GEN+, 4bbl), and 4.3LX (GEN+, 2bbl) MerCruiser configurations, as well as 4.3L EFI (GEN+\/TBI) engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this rotor fit Alpha and Bravo drive MerCruiser engines?\u003c\/strong\u003e Yes, the 18-5432 rotor is listed for the 4.3L\/LH\/LX\/LXH V6 engine with both Alpha (Gen+) and Bravo (Gen+) drives, for serial numbers F803000 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for Sierra 18-5432?\u003c\/strong\u003e The UPC for the Sierra 18-5432 Rotor Assembly is 030999319319.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988216262875,"sku":"SIE-18-5432","price":12.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5432_lg__71076.1558129169.500.750.jpg?v=1785188318"},{"product_id":"sierra-18-5431-distributor-rotor-for-mercury-mercruiser-gm-v-8-thunderbolt-iv-v-hei-ignition-replaces-13524a5","title":"Sierra 18-5431 Rotor Assembly for MerCruiser GM V-8 Thunderbolt IV \u0026 V Ignition, Replaces 13524A5","description":"\u003cp\u003eThe Sierra 18-5431 Rotor Assembly is a direct-fit distributor rotor engineered for MerCruiser GM V-8 engines equipped with Thunderbolt IV and Thunderbolt V ignition systems. It is built to Sierra's MAGFORCE ignition standards, which are designed to be electronics friendly, protecting onboard electronic devices and engine controls from RFI and EMI interference while still delivering the voltage the ignition system needs to fire reliably. The rotor features moisture-proof, molded distributor insulators and a high-quality conductive center carrier reinforcement that maintains conductor integrity over years of service in the harsh marine environment.\u003c\/p\u003e\u003cp\u003eThis rotor is confirmed to fit several MerCruiser V-8 engine configurations, including the 500 Bulldog 540\/V-8, the 575 540\/V-8, and the 800 SC 572\/V-8, each identified by specific serial number ranges. It ships as a single-piece rotor assembly and is intended as a direct replacement for the original equipment rotor in these ignition systems, restoring correct spark distribution during a tune-up or ignition system service.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5431\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Rotor Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e GM V-8 Engines With Thunderbolt IV \u0026amp; V Ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 13524T1, 13524A5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.17 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319302\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 500 Bulldog 540\/V-8, 1990-2001, serial numbers C577003 - M050281\u003c\/li\u003e\n\u003cli\u003eMerCruiser 575 540\/V-8, 1986-1992, serial numbers A677429 - D763716\u003c\/li\u003e\n\u003cli\u003eMerCruiser 800 SC 572\/V-8, 1993-1998, serial numbers D763836 and up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e13524T1\u003c\/li\u003e\n\u003cli\u003e13524A5\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5431 rotor assembly fit?\u003c\/strong\u003e The 18-5431 is designed for GM V-8 engines equipped with Thunderbolt IV and Thunderbolt V ignition systems, and it is confirmed to fit the MerCruiser 500 Bulldog 540\/V-8 (1990-2001), the 575 540\/V-8 (1986-1992), and the 800 SC 572\/V-8 (1993-1998).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-5431 a direct OEM replacement?\u003c\/strong\u003e Yes, part number 18-5431 is designed as a direct replacement rotor and cross-references to OEM numbers 13524T1 and 13524A5.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the rotor assembly weigh?\u003c\/strong\u003e The Sierra 18-5431 rotor assembly weighs 0.17 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the OEM number 13524A5 correspond to?\u003c\/strong\u003e 13524A5 is one of the OEM cross-reference numbers for the Sierra 18-5431 rotor assembly, along with 13524T1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many rotors come in the package?\u003c\/strong\u003e The 18-5431 ships as a single rotor assembly, with one item per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the 18-5431 rotor have?\u003c\/strong\u003e The rotor has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5431 rotor protect onboard electronics from interference?\u003c\/strong\u003e Yes, Sierra's MAGFORCE ignition components, including the 18-5431 rotor, are engineered to be electronics friendly and shield RFI and EMI from onboard electronic devices and engine controls.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5431 rotor fit non-Thunderbolt ignition systems?\u003c\/strong\u003e No, the 18-5431 is specified for GM V-8 engines with Thunderbolt IV and Thunderbolt V ignition systems only.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial number range applies to the MerCruiser 800 SC 572\/V-8 fitment?\u003c\/strong\u003e For the MerCruiser 800 SC 572\/V-8, the Sierra 18-5431 rotor fits engines with serial numbers D763836 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5431 rotor moisture resistant?\u003c\/strong\u003e Yes, the rotor uses moisture-proof, molded distributor insulators to help prevent moisture-related ignition failures in marine use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial numbers apply to the 575 540\/V-8 fitment for part 18-5431?\u003c\/strong\u003e On the MerCruiser 575 540\/V-8, the 18-5431 rotor fits engines within serial numbers A677429 through D763716.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-5431?\u003c\/strong\u003e Ordering the Sierra 18-5431 includes one rotor assembly; it is sold individually with no additional components.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988216688859,"sku":"SIE-18-5431","price":11.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5431_lg__32077.1558129108.500.750.jpg?v=1785188972"},{"product_id":"sierra-18-5484-1-electronic-distributor-for-gm-v8-marine-engines-262-454-502-delco-est-direct-replacement","title":"Sierra 18-5484-1 Electronic Distributor (Late HEI), Replaces 3857449, Conventional Rotation V8 262-454 \u0026 502","description":"\u003cp\u003eThe Sierra 18-5484-1 Electronic Distributor is a Late HEI style ignition distributor engineered as a plug-in replacement for GM-style EST ignition system distributors used in marine V8 engine applications. It is built for conventional rotation V8\/LH 262-454 \u0026amp; 502 engines, except 348\/409 and tall block engines. At the core of the distributor is the Ignitor II ignition module with adaptive dwell control, which adjusts spark timing across the entire RPM range to help maximize engine performance and maintain consistent, reliable ignition output.\u003c\/p\u003e\u003cp\u003eInternally, the distributor uses an upper roller bearing paired with an oil impregnated bronze sintered bottom bushing, aligned and bored for accuracy to deliver maximum durability under marine operating conditions. A machined, heat treated gear is manufactured to tight tolerances to ensure long-term durability and consistent timing. The steel gear is compatible with both flat tappet and hydraulic roller cams, giving it broad application across GM-based marine V8 setups. The housing is of aluminum construction, and the distributor combines a ball bearing and bushing setup for maximum timing stability and long service life.\u003c\/p\u003e\u003cp\u003eThe unit features a reliable, high signal strength trigger system and is built to meet or exceed SAE J1171 standards, the marine ignition protection standard. A companion Sierra 18-5281 tune-up kit is available for maintenance of this distributor. As with other Sierra ignition components, this distributor is engineered to meet the demands of high horsepower marine engines while standing up to the harsh marine environment, and it meets or exceeds the performance of the original equipment part it replaces.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5484-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Electronic Distributor (Late HEI)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e Conventional Rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e V8\/LH 262-454 \u0026amp; 502 (Except 348\/409 and Tall Block Engines)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Module:\u003c\/strong\u003e Ignitor II with adaptive dwell control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type:\u003c\/strong\u003e Upper roller bearing and oil impregnated bronze sintered bottom bushing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Material:\u003c\/strong\u003e Machined, heat treated gear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Compatibility:\u003c\/strong\u003e Flat tappet or hydraulic roller cams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing Material:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Compliance:\u003c\/strong\u003e Meets or exceeds SAE J1171\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Tune-Up Kit:\u003c\/strong\u003e Sierra 18-5281\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.99 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eConventional Rotation V8\/LH 262-454 \u0026amp; 502 (Except 348\/409 and Tall Block Engines)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e3857449\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5484-1 distributor fit?\u003c\/strong\u003e The Sierra 18-5484-1 Electronic Distributor is designed for conventional rotation V8\/LH 262-454 \u0026amp; 502 engines, except 348\/409 and tall block engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5484-1 replace an OEM distributor?\u003c\/strong\u003e Yes, the 18-5484-1 replaces OEM number 3857449 and is designed as a plug-in replacement for the GM-style EST ignition system distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat ignition module is used in this distributor?\u003c\/strong\u003e The Sierra 18-5484-1 uses the Ignitor II ignition module with adaptive dwell control, which adjusts spark timing across the entire RPM range to maximize performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the housing material on the 18-5484-1 distributor?\u003c\/strong\u003e The housing is constructed of aluminum, paired with a ball bearing and bushing combination for maximum timing stability and long service life.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the gear on the 18-5484-1 compatible with roller cams?\u003c\/strong\u003e The steel gear on the Sierra 18-5484-1 distributor is compatible with either flat tappet or hydraulic roller cams.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5484-1 distributor weigh?\u003c\/strong\u003e The Sierra 18-5484-1 Electronic Distributor weighs 2.99 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat bearing setup does this distributor use for durability?\u003c\/strong\u003e An upper roller bearing and an oil impregnated bronze sintered bottom bushing are installed and aligned bored for accuracy, providing maximum durability in the 18-5484-1 distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5484-1 distributor meet marine ignition standards?\u003c\/strong\u003e Yes, the Sierra 18-5484-1 distributor meets or exceeds SAE J1171 standards for marine ignition protection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there a tune-up kit available for the 18-5484-1 distributor?\u003c\/strong\u003e Sierra offers tune-up kit 18-5281 as a companion part for servicing the 18-5484-1 Electronic Distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the 18-5484-1 compare to the original equipment distributor it replaces?\u003c\/strong\u003e The Sierra 18-5484-1 is engineered to meet or exceed the performance of the original equipment distributor it replaces, in this case OEM number 3857449.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat kind of trigger system does the 18-5484-1 use?\u003c\/strong\u003e The Sierra 18-5484-1 distributor features a reliable, high signal strength trigger system as part of its Late HEI design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-5484-1 distributor?\u003c\/strong\u003e The Sierra 18-5484-1 Electronic Distributor measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988218163419,"sku":"SIE-18-5484-1","price":617.84,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5484-1__86956.1753385267.500.750.jpg?v=1785188801"},{"product_id":"distributor-rotor-and-shaft-assembly-for-mercury-4-and-6-cylinder-outboards-sierra-18-99308-cdi-994-4371-interchange","title":"Sierra Rotor\/Shaft Assembly 18-99308 for 4\/6 Cylinder Outboard Engines","description":"\u003cp\u003eThe Sierra Rotor\/Shaft Assembly, part number 18-99308, is a replacement ignition rotor and shaft assembly built for 4 and 6 cylinder outboard engines. This component is a core part of the engine's ignition system, working with the distributor to route spark to the correct cylinder in firing order. As the engine's original rotor and shaft wear from heat cycling and continuous rotation, ignition timing accuracy and spark delivery can degrade, leading to misfires, hard starting, or rough idle. Replacing the rotor\/shaft assembly restores proper spark distribution and helps the ignition system perform as designed.\u003c\/p\u003e\u003cp\u003eThis assembly is compatible with ignition systems from CDI Electronics, giving boat owners and marine technicians a straightforward option when servicing 4 or 6 cylinder outboard ignition components. It is sized and configured specifically for 4\/6 cylinder applications, so it should be matched to the correct cylinder count before ordering.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-99308\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Rotor\/Shaft Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Configuration:\u003c\/strong\u003e 4\/6 Cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Ignition System:\u003c\/strong\u003e CDI Electronics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.9 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 736983857217\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Parts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits 4 and 6 cylinder outboard engines.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99308 rotor\/shaft assembly fit?\u003c\/strong\u003e The Sierra 18-99308 is built for 4 and 6 cylinder outboard engines that use a distributor-based ignition system with a rotor and shaft.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat ignition system is the 18-99308 rotor\/shaft assembly compatible with?\u003c\/strong\u003e This rotor\/shaft assembly is compatible with CDI Electronics ignition systems used on 4\/6 cylinder outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does part number 18-99308 weigh?\u003c\/strong\u003e The Sierra 18-99308 rotor\/shaft assembly weighs 0.9 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the rotor\/shaft assembly do in the ignition system?\u003c\/strong\u003e It rotates within the distributor to direct spark from the ignition coil to each spark plug in the correct firing order, so accurate rotor and shaft function is essential for proper engine timing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the signs that a rotor\/shaft assembly needs to be replaced?\u003c\/strong\u003e Misfires, hard starting, rough idle, or inconsistent spark delivery can indicate a worn rotor and shaft, which is when a replacement like the Sierra 18-99308 is typically needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-99308 a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e Part number 18-99308 is a Sierra branded rotor\/shaft assembly, sold under the Sierra part number as listed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99308 rotor\/shaft assembly include the shaft as one piece with the rotor?\u003c\/strong\u003e Yes, the Sierra 18-99308 is a combined rotor\/shaft assembly, meaning the rotor and shaft are supplied together as a single unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this rotor\/shaft assembly be used on both 4 cylinder and 6 cylinder outboards?\u003c\/strong\u003e Yes, the Sierra 18-99308 is designed for use on 4 and 6 cylinder outboard engine applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of outboard parts does the 18-99308 belong to?\u003c\/strong\u003e The Sierra 18-99308 rotor\/shaft assembly falls under Mercury outboard parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-99308 rotor\/shaft assembly?\u003c\/strong\u003e The UPC for the Sierra 18-99308 rotor\/shaft assembly is 736983857217.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988441444571,"sku":"SIE-18-99308","price":312.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-994-4371_lg__61960.1558115320.500.750.jpg?v=1785188257"},{"product_id":"timer-base-for-johnson-evinrude-185-250-hp-v6-outboards-1988-2001-replaces-oem-584586-583533-763775","title":"Sierra 18-99391 Timer Base for Johnson Evinrude 6 Cylinder Outboards, 185-250 HP 1988-2001, Replaces 584586 583533 763775","description":"\u003cp\u003eThe Sierra 18-99391 timer base is a replacement ignition timing component for Johnson and Evinrude 6 cylinder loop charged outboard engines equipped with Quick Start and S.L.O.W. Systems. The timer base controls ignition timing advance as the throttle is opened, working in conjunction with the engine's ignition system to deliver correct spark timing across the RPM range. It uses a mechanical lift design to translate throttle linkage movement into timing advance.\u003c\/p\u003e\u003cp\u003eThis timer base is built for 6 cylinder Johnson\/Evinrude outboards rated 185, 200, 225, and 250 HP from 1988 through 2001 that use the loop charged, Quick Start, and S.L.O.W.-equipped ignition setup. It is a direct-fit replacement for the OEM timer base assembly and is intended to restore correct ignition timing operation on engines with a worn, cracked, or malfunctioning original unit. Installing a new timer base can resolve hard starting, rough idle, misfiring, or inconsistent timing advance caused by a failing original component.\u003c\/p\u003e\u003cp\u003eThe unit ships as a complete timer base assembly ready to install in place of the original equipment part, using the OEM mounting points and linkage connections. It weighs 0.9 pounds.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-99391\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Timer Base\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine Configuration:\u003c\/strong\u003e 6 Cylinder, Loop Charged, Quick Start and S.L.O.W.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Horsepower:\u003c\/strong\u003e 185, 200, 225, 250 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Years:\u003c\/strong\u003e 1988-2001\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLift Type:\u003c\/strong\u003e Mechanical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.9 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 8 x 5 x 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282394240\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude 6 cylinder loop charged engines with Quick Start and S.L.O.W., 185, 200, 225 and 250 HP, 1988-2001\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e584586\u003c\/li\u003e\n\u003cli\u003e583533\u003c\/li\u003e\n\u003cli\u003e763775\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99391 timer base fit?\u003c\/strong\u003e It fits Johnson\/Evinrude 6 cylinder loop charged outboard engines with Quick Start and S.L.O.W. Rated at 185, 200, 225, and 250 HP, built between 1988 and 2001.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this timer base replace?\u003c\/strong\u003e The Sierra 18-99391 timer base replaces OEM numbers 584586, 583533, and 763775.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99391 timer base weigh?\u003c\/strong\u003e It weighs 0.9 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the timer base?\u003c\/strong\u003e The Sierra 18-99391 timer base measures 8 x 5 x 3 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the timer base a mechanical or electronic unit?\u003c\/strong\u003e It uses a mechanical lift design to advance ignition timing as the throttle is opened.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this timer base work with S.L.O.W.-equipped engines?\u003c\/strong\u003e Yes, the 18-99391 is designed for 6 cylinder Johnson\/Evinrude engines equipped with both Quick Start and S.L.O.W. Systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this fit a 200 HP Evinrude from 1995?\u003c\/strong\u003e Yes, provided it is a 6 cylinder loop charged model with Quick Start and S.L.O.W., the 18-99391 timer base covers 185-250 HP engines built 1988-2001, which includes that engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate the timer base needs replacement?\u003c\/strong\u003e Hard starting, rough idle, misfiring, or inconsistent ignition timing advance on a covered Johnson\/Evinrude 6 cylinder engine can indicate a worn or failing timer base like the 18-99391 needs replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I cross-reference this part using my old OEM number?\u003c\/strong\u003e Yes, if your old timer base is stamped 584586, 583533, or 763775, the Sierra 18-99391 is the correct replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes installing the 18-99391 require any modification to the engine?\u003c\/strong\u003e No, it is a direct-fit replacement that installs at the OEM mounting points and linkage connections without modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the complete timer base assembly?\u003c\/strong\u003e Yes, the Sierra 18-99391 ships as a complete, ready-to-install timer base assembly.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988442460379,"sku":"SIE-18-99391","price":466.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-133-3533_lg__14594.1722367210.500.750.jpg?v=1785188155"},{"product_id":"johnson-evinrude-timer-base-4-cyl-replaces-oem-583508-763782-fits-1988-2001-120-140-hp-loop-charged-outboards","title":"Sierra 18-99425 Timer Base for Johnson\/Evinrude 4-Cyl Loop Charged Outboards, 1988-2001, 120-140 HP, Replaces 763782","description":"\u003cp\u003eThe Sierra 18-99425 is a timer base assembly for the ignition system of 1988-2001 Johnson\/Evinrude 4 cylinder loop charged outboard engines equipped with Quick Start and S.L.O.W. Features, covering the 120, 125, 130, 135, and 140 HP models. The timer base is a core ignition timing component that works with the engine's electronic ignition system to help maintain correct spark timing across the engine's operating range. It is constructed of metal for durability in the marine engine compartment environment. This part is built as a direct fit for the listed engine range, allowing it to be installed in place of the original equipment timer base without modification to the surrounding ignition components. It cross-references to OEM part numbers 763782 and 583508, so buyers can confirm compatibility using either of those numbers in addition to the Sierra 18-99425 part number. At 0.9 pounds and measuring 1 inch by 1 inch by 1 inch, it is a compact component designed to mount within the existing ignition housing of the covered outboard models.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-99425\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Timer Base (Ignition System)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 1 inch x 1 inch x 1 inch (D x W x H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.9 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e Johnson\/Evinrude 4 cylinder loop charged engines with Quick Start and S.L.O.W.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower Range:\u003c\/strong\u003e 120, 125, 130, 135, and 140 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Years:\u003c\/strong\u003e 1988-2001\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 763782, 583508\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude 4 cylinder loop charged outboard engines with Quick Start and S.L.O.W., 1988-2001, 120, 125, 130, 135, and 140 HP\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e763782\u003c\/li\u003e\n\u003cli\u003e583508\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99425 timer base fit?\u003c\/strong\u003e The Sierra 18-99425 fits 1988-2001 Johnson\/Evinrude 4 cylinder loop charged outboard engines equipped with Quick Start and S.L.O.W., covering the 120, 125, 130, 135, and 140 HP models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-99425 timer base replace?\u003c\/strong\u003e It replaces OEM part numbers 763782 and 583508, so either of those numbers can be used to confirm the correct fit before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the timer base made of?\u003c\/strong\u003e The 18-99425 timer base is constructed of metal, suited to the operating environment inside an outboard's ignition housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow big is the Sierra 18-99425 timer base?\u003c\/strong\u003e It measures 1 inch by 1 inch by 1 inch (depth x width x height).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99425 timer base weigh?\u003c\/strong\u003e It weighs 0.9 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does a timer base do in an outboard ignition system?\u003c\/strong\u003e A timer base such as the 18-99425 is a core component of the engine's electronic ignition system, working to help maintain correct spark timing as the engine runs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99425 support Quick Start and S.L.O.W. Ignition features?\u003c\/strong\u003e Yes, the 18-99425 is designed for engines equipped with Quick Start and S.L.O.W., which are features found on the covered 1988-2001 4 cylinder loop charged Johnson\/Evinrude engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-99425 be installed in place of the original timer base without other changes?\u003c\/strong\u003e Yes, the Sierra 18-99425 is built as a direct fit for its listed engine range and cross-references to OEM numbers 763782 and 583508, allowing installation in place of the original timer base.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-99425 a genuine Sierra part?\u003c\/strong\u003e Yes, part number 18-99425 is a Sierra manufacturer part number for the timer base assembly covering the listed Johnson\/Evinrude 4 cylinder engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988443541723,"sku":"SIE-18-99425","price":319.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-133-3508_lg__59989.1722493370.500.750.jpg?v=1785188078"},{"product_id":"distributor-trigger-for-mercury-mariner-outboard-replaces-393-3736-fits-90-110-115-135-140-150-hp-6-cyl-1967-1979-80-85-hp-4-cyl-1969-1975","title":"Sierra 18-99430 Distributor Trigger Housing, Replaces 393-3736 - Fits Mercury Mariner 80-150 HP 4\/6 Cylinder Outboards","description":"\u003cp\u003eThe Sierra 18-99430 is a distributor trigger housing built for Mercury and Mariner outboard motors equipped with battery powered distributors. This housing is a wear item in the ignition triggering system, and a cracked, worn, or failed unit can cause misfires, hard starting, or a no-spark condition. Replacing it with the Sierra 18-99430 restores proper distributor timing signal generation so the ignition system fires correctly across the RPM range.\u003c\/p\u003e\u003cp\u003eIt is designed to fit Mercury\/Mariner 80 and 85 HP 4 cylinder outboards and 90, 110, 115, 135, 140, and 150 HP 6 cylinder outboards that use a battery powered distributor setup. The housing is a direct cross-reference for multiple Mercury OEM part numbers, making it a straightforward like-for-like replacement for the factory unit. It mounts to the engine as part of the distributor assembly and is finished for durability in a marine engine bay environment.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-99430\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.6 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Multicolored\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e Marine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Engine Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Horsepower:\u003c\/strong\u003e 150 Horsepower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e Repair or replacement of Mercury\/Mariner outboard motor distributor trigger housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 332-4177, 332-4177A 3, 393-3736A79, 393-3736, 393-3736A 3, 393-3736A23, 393-3736A77\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury\/Mariner 80 and 85 HP (4 cylinder), 1969-1975, with battery powered distributor\u003c\/li\u003e\n\u003cli\u003eMercury\/Mariner 90, 110, 115, 135, 140, and 150 HP (6 cylinder), 1967-1979, with battery powered distributor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e332-4177\u003c\/li\u003e\n\u003cli\u003e332-4177A 3\u003c\/li\u003e\n\u003cli\u003e393-3736A79\u003c\/li\u003e\n\u003cli\u003e393-3736\u003c\/li\u003e\n\u003cli\u003e393-3736A 3\u003c\/li\u003e\n\u003cli\u003e393-3736A23\u003c\/li\u003e\n\u003cli\u003e393-3736A77\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99430 distributor trigger housing fit?\u003c\/strong\u003e It fits Mercury\/Mariner 80 and 85 HP 4 cylinder outboards from 1969-1975, and Mercury\/Mariner 90, 110, 115, 135, 140, and 150 HP 6 cylinder outboards from 1967-1979, specifically those equipped with a battery powered distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does the 18-99430 replace?\u003c\/strong\u003e The Sierra 18-99430 cross-references to Mercury OEM numbers 332-4177, 332-4177A 3, 393-3736A79, 393-3736, 393-3736A 3, 393-3736A23, and 393-3736A77.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the correct part for a non-battery powered distributor?\u003c\/strong\u003e No. The Sierra 18-99430 is designed specifically for Mercury\/Mariner engines with a battery powered distributor, so confirm your distributor type before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99430 trigger housing weigh?\u003c\/strong\u003e The Sierra 18-99430 distributor trigger housing weighs 1.6 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the housing?\u003c\/strong\u003e The Sierra 18-99430 is finished in a multicolored appearance as supplied.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-99430 work on both 4 cylinder and 6 cylinder Mercury outboards?\u003c\/strong\u003e Yes, one housing covers both the 80\/85 HP 4 cylinder range and the 90-150 HP 6 cylinder range, as long as the engine uses a battery powered distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-99430 a genuine Mercury part or an aftermarket replacement?\u003c\/strong\u003e It is a Sierra branded replacement part, not a Mercury branded original, but it is built to match the fit and function of the OEM housing it cross-references.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate the trigger housing needs replacement?\u003c\/strong\u003e Misfires, hard starting, or a no-spark condition on a Mercury\/Mariner outboard with a battery powered distributor can point to a worn or failed distributor trigger housing like the 18-99430.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99430 include mounting hardware or a full distributor?\u003c\/strong\u003e The Sierra 18-99430 is the distributor trigger housing component itself; check your engine's assembly to confirm what additional hardware or components you already have.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-99430 as a direct swap for my old housing without other modifications?\u003c\/strong\u003e Since the 18-99430 cross-references the original Mercury housing numbers for your engine, it is intended as a direct fit replacement on the applicable 80-150 HP battery powered distributor engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988443902171,"sku":"SIE-18-99430","price":599.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-134-3736_lg__78179.1558112559.500.750.jpg?v=1785188099"},{"product_id":"johnson-evinrude-timer-base-for-35-40-50-hp-2-cylinder-outboards-1992-2005-replaces-oem-763808-sierra-18-99418","title":"Sierra 18-99418 Johnson\/Evinrude Timer Base, 2 Cylinder, Replaces 763808 175386, Fits 1992-2005 35\/40\/50 HP","description":"\u003cp\u003eThe Sierra 18-99418 is a 2-cylinder timer base built for Johnson and Evinrude outboards that use a 3-wire timer base with S.L.O.W. (Sensor Low Oil Warning). The timer base is a core ignition component that controls spark timing as the throttle advances, and a worn or failing unit is a common cause of rough idle, misfires, hesitation, or a no-start condition on affected 2-cylinder outboards. This timer base is finished in blue and constructed of metal and plastic components for durability in the marine ignition environment.\u003c\/p\u003e\u003cp\u003eIt is designed as a direct replacement for the OEM timer base on Johnson\/Evinrude 2 cylinder engines rated 35, 40, and 50 HP that were built with the 3-wire, S.L.O.W.-equipped timer base configuration, covering model years 1992 through 2005. Confirm your outboard uses the 3-wire S.L.O.W. Timer base setup before ordering, since Johnson\/Evinrude used multiple timer base wiring configurations across this HP range and era.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-99418\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Ignition System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinders:\u003c\/strong\u003e 2 Cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Configuration:\u003c\/strong\u003e 3-Wire Timer Base with S.L.O.W.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal, Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.7 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude 35, 40, and 50 HP 2 cylinder engines, 1992-2005, using a 3-wire timer base with S.L.O.W.\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e763808\u003c\/li\u003e\n\u003cli\u003e175386\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-99418 timer base fit?\u003c\/strong\u003e This timer base fits Johnson\/Evinrude 2 cylinder outboards rated 35, 40, and 50 HP, model years 1992-2005, that use a 3-wire timer base with S.L.O.W. (Sensor Low Oil Warning).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-99418 replace?\u003c\/strong\u003e The Sierra 18-99418 replaces OEM Johnson\/Evinrude part numbers 763808 and 175386.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this timer base for a 2-cylinder or 3-cylinder outboard?\u003c\/strong\u003e It is built specifically for 2 cylinder Johnson\/Evinrude outboards, not 3-cylinder models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this timer base include the S.L.O.W. Sensor feature?\u003c\/strong\u003e Yes, the 18-99418 is a 3-wire timer base with S.L.O.W. (Sensor Low Oil Warning) built in, matching the OEM wiring configuration on covered engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99418 timer base weigh?\u003c\/strong\u003e The Sierra 18-99418 timer base weighs 0.7 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the timer base made of?\u003c\/strong\u003e It is constructed of metal and plastic components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-99418?\u003c\/strong\u003e This timer base is finished in blue.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate a failing timer base on a Johnson\/Evinrude outboard?\u003c\/strong\u003e Rough idle, misfires, hesitation on acceleration, or a no-start condition can indicate a worn timer base on affected 2-cylinder Johnson\/Evinrude engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this timer base on any 35, 40, or 50 HP Johnson\/Evinrude outboard?\u003c\/strong\u003e Only on 2 cylinder 35, 40, and 50 HP Johnson\/Evinrude engines built with the 3-wire S.L.O.W. Timer base, model years 1992-2005; other wiring configurations used in the same HP range are not compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-99418 a direct OEM replacement?\u003c\/strong\u003e Yes, the Sierra 18-99418 is a direct replacement for OEM timer base numbers 763808 and 175386 on covered Johnson\/Evinrude engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-99418?\u003c\/strong\u003e The order includes one Sierra 18-99418 timer base unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many wires does this timer base use?\u003c\/strong\u003e The 18-99418 uses a 3-wire configuration with S.L.O.W.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988444000475,"sku":"SIE-18-99418","price":342.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-133-5386_lg__69088.1748441818.500.750.jpg?v=1785188098"},{"product_id":"sierra-18-99440-ignition-timer-base-for-johnson-evinrude-3-cylinder-outboards-replaces-omc-580970-581251-fits-65-70-75-hp-cross-flow-1972-1978","title":"Sierra Timer Base 18-99440 for Johnson\/Evinrude 3-Cylinder Outboards, Replaces 133-1251, 580970, 581251","description":"\u003cp\u003eThe Sierra 18-99440 is a timer base built for Johnson\/Evinrude 3-cylinder outboard engines, a core component of the ignition system that controls spark timing as the engine runs through its RPM range. It is constructed of marine-grade materials to hold up to the vibration, heat, and moisture typical of an outboard powerhead environment. The timer base is designed for straightforward removal-and-replacement service, making it a practical choice when an original timer base has worn out, cracked, or is no longer advancing timing correctly.\u003c\/p\u003e\u003cp\u003eThis timer base is intended for Johnson and Evinrude 3-cylinder Cross Flow outboards, including 65HP, 70HP, and 75HP models as detailed in the fitment section below. It directly replaces several factory and aftermarket part numbers, so it can be used as a like-for-like swap on engines originally equipped with any of those numbers. Buyers replacing a failing timer base should confirm their engine's horsepower rating and model designation against the fitment list before ordering.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-99440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.4 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Marine-grade materials\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Configuration:\u003c\/strong\u003e 3 Cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine Brand:\u003c\/strong\u003e Johnson\/Evinrude\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282394806\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eJohnson\/Evinrude 65HP Cross Flow (1972-1973)\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 70HP Cross Flow (1974-1978)\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 75HP ES ER EL Cross Flow (1975-1977)\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 75HP ER EL Cross Flow (1976-1978)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e133-1251\u003c\/li\u003e\n\u003cli\u003e580970\u003c\/li\u003e\n\u003cli\u003e581251\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99440 timer base fit?\u003c\/strong\u003e The Sierra 18-99440 timer base fits Johnson\/Evinrude 3-cylinder Cross Flow outboards: 65HP (1972-1973), 70HP (1974-1978), 75HP ES ER EL (1975-1977), and 75HP ER EL (1976-1978).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99440 a direct replacement for the original timer base?\u003c\/strong\u003e Yes, the 18-99440 is designed as a direct replacement for the timer base on the listed Johnson\/Evinrude 3-cylinder Cross Flow engines, replacing OEM\/aftermarket numbers 133-1251, 580970, and 581251.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does 18-99440 cross-reference?\u003c\/strong\u003e The Sierra 18-99440 timer base replaces part numbers 133-1251, 580970, and 581251.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-99440 timer base made of?\u003c\/strong\u003e It is constructed of marine-grade materials suited to the heat, vibration, and moisture exposure inside an outboard powerhead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-99440 timer base weigh?\u003c\/strong\u003e The Sierra 18-99440 timer base weighs 0.4 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-99440 timer base?\u003c\/strong\u003e The 18-99440 timer base is blue.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this timer base work on a 2-cylinder or 4-cylinder Johnson\/Evinrude engine?\u003c\/strong\u003e No, the Sierra 18-99440 is built specifically for Johnson\/Evinrude 3-cylinder engines and is not intended for 2-cylinder or 4-cylinder applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99440 fit both Johnson and Evinrude outboards?\u003c\/strong\u003e Yes, since Johnson and Evinrude 3-cylinder Cross Flow outboards share ignition components, the 18-99440 timer base fits the applicable models from both brands.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-99440 on a 75HP outboard?\u003c\/strong\u003e Yes, the 18-99440 fits 75HP ES ER EL Cross Flow (1975-1977) and 75HP ER EL Cross Flow (1976-1978) Johnson\/Evinrude engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace a timer base?\u003c\/strong\u003e A timer base controls ignition spark timing as engine RPM changes; the Sierra 18-99440 is used to replace a worn, cracked, or malfunctioning original timer base to restore correct timing operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-99440 timer base genuine Sierra or a generic part?\u003c\/strong\u003e The 18-99440 is a Sierra-branded timer base manufactured to replace the listed Johnson\/Evinrude OEM and aftermarket timer base numbers.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988444623067,"sku":"SIE-18-99440","price":350.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-133-1251_lg__09777.1722505519.500.750.jpg?v=1785188927"},{"product_id":"emp-300-01088-distributor-cap-replaces-volvo-3853815-fits-1971-2005-v8-190-415-hp-gm-engines-with-prestolite-conventional-ignition","title":"EMP 300-01088 Distributor Cap, Replaces 41058, for Volvo Penta V8 190-415 HP GM Engines with Prestolite Ignition","description":"\u003cp\u003eThe EMP 300-01088 is a distributor cap built for Volvo Penta V8, 190-415 HP GM marine engines equipped with Prestolite conventional ignition. It serves as a direct replacement for OEM 41058, restoring correct spark distribution to the ignition system after the original cap has cracked, corroded, or worn out from heat cycling and vibration typical in inboard engine compartments. The cap mounts to the distributor housing and routes high-voltage current from the coil to the correct spark plug wire terminal in firing order, so a worn or contaminated cap can cause misfires, hard starting, or rough idle on these GM-based marine V8s.\u003c\/p\u003e\u003cp\u003eThis part also cross-references with a range of aftermarket and OEM numbers used across Volvo Penta, Crusader, and other Prestolite-equipped marine ignition systems, making it easy to identify as the correct replacement regardless of which catalog number a buyer starts from. At 4 x 4 x 4 inches and 0.42 pounds, it is sized as a standard single-cap replacement, not a multi-part tune-up kit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e EMP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 300-01088\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Distributor Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e Volvo Penta V8, 190-415 HP GM engines with Prestolite conventional ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition System Type:\u003c\/strong\u003e Prestolite Conventional Ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 4 x 4 x 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.42 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 840080453293\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 41058\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso Cross-References With:\u003c\/strong\u003e Volvo 3853815, Volvo 841070, Sierra 18-5352, CDI E64-0016, Crusader 41076, GLM 71560, Mallory 9-29412, Pleasurecraft RA108003\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eVolvo Penta V8, 190-415 HP GM engines with Prestolite conventional ignition\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e41058\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the EMP 300-01088 distributor cap fit?\u003c\/strong\u003e The EMP 300-01088 is designed for Volvo Penta V8, 190-415 HP GM engines equipped with Prestolite conventional ignition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the EMP 300-01088 replace OEM part 41058?\u003c\/strong\u003e Yes, the EMP 300-01088 distributor cap is a direct replacement for OEM number 41058.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the EMP 300-01088 the same as a Sierra 18-5352 distributor cap?\u003c\/strong\u003e It cross-references with Sierra 18-5352, along with CDI E64-0016, Crusader 41076, GLM 71560, Mallory 9-29412, and Pleasurecraft RA108003, so any of these numbers point to the same EMP 300-01088 cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this distributor cap?\u003c\/strong\u003e The EMP 300-01088 measures 4 x 4 x 4 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the EMP 300-01088 weigh?\u003c\/strong\u003e This distributor cap weighs 0.42 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the EMP 300-01088 work with Volvo Penta parts 3853815 or 841070?\u003c\/strong\u003e Yes, the EMP 300-01088 replaces Volvo Penta numbers 3853815 and 841070.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of ignition system does this cap require?\u003c\/strong\u003e The EMP 300-01088 is built specifically for engines with Prestolite conventional ignition, not electronic ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the EMP 300-01088?\u003c\/strong\u003e The EMP 300-01088 is sold as a single distributor cap, not a full tune-up kit or bundled rotor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this cap fit a Crusader inboard engine?\u003c\/strong\u003e The EMP 300-01088 cross-references with Crusader part number 41076, indicating fitment on Crusader engines using that ignition component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my distributor cap needs replacing?\u003c\/strong\u003e Signs like misfires, hard starting, or rough idle on a Volvo Penta V8 GM engine with Prestolite ignition can indicate the distributor cap, such as the EMP 300-01088, has worn out or corroded and needs replacement.\u003c\/p\u003e","brand":"EMP","offers":[{"title":"Default Title","offer_id":48991284101339,"sku":"EMP-300-01088","price":27.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/EMP_300-01088_MerCruiser_Volvo_Distributor_Cap__48498.1722515414.500.750.jpg?v=1785188731"},{"product_id":"distributor-rotor-18-5403-for-chrysler-inboard-305-350-454-v8-3-8l-v6-1976-1988-mpn-300-00530","title":"EMP Distributor Rotor 300-00530, Cross-Reference 18-5403 for GM 305\/350\/454 and 3.8L Marine Engines","description":"\u003cp\u003eThe EMP 300-00530 is a distributor rotor built for marine inboard ignition tune-ups on GM-based engines. It mounts inside the distributor cap and rotates with the distributor shaft, directing high-voltage current from the coil to each spark plug terminal in firing order. As a tune-up wear item, the rotor is typically replaced alongside the contact set, condenser, and distributor cap to restore reliable spark delivery and smooth engine performance.\u003c\/p\u003e\u003cp\u003eThis rotor is the correct replacement for the 18-5403 position in three GM-based marine engine applications: 6-cylinder 3.8L engines using distributor No. IBM-7014A, and 8-cylinder 305, 350, and 454 cid engines using distributor No. IBM-7011 or IBM-7013. Always match the rotor to the correct distributor number for your engine to ensure proper fit and ignition timing.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e EMP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 300-00530\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Chrysler Inboard Tune Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Distributor Rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-Reference Number:\u003c\/strong\u003e 18-5403\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Configurations:\u003c\/strong\u003e 6-cylinder, 8-cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e 3.8L, 305 cid, 350 cid, 454 cid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Distributor Numbers:\u003c\/strong\u003e IBM-7014A, IBM-7011, IBM-7013\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.033 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 840080402574\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1984-88: 6-cylinder 3.8L engines, distributor No. IBM-7014A\u003c\/li\u003e\n\u003cli\u003e1976-82: 8-cylinder 305, 350, and 454 cid engines, distributor No. IBM-7011\u003c\/li\u003e\n\u003cli\u003e1983-88: 8-cylinder 305, 350, and 454 cid engines, distributor No. IBM-7013\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e18-5403\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the EMP 300-00530 rotor used for?\u003c\/strong\u003e The EMP 300-00530 is a distributor rotor that directs high-voltage current from the ignition coil to each spark plug terminal in firing order as part of a marine inboard ignition tune-up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich engines does the 300-00530 rotor fit?\u003c\/strong\u003e It fits 6-cylinder 3.8L engines using distributor No. IBM-7014A, and 8-cylinder 305, 350, and 454 cid engines using distributor No. IBM-7011 or IBM-7013.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the EMP 300-00530 the same as rotor 18-5403?\u003c\/strong\u003e Yes, the EMP 300-00530 cross-references to rotor number 18-5403 for the listed GM-based marine engine applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this rotor weigh?\u003c\/strong\u003e The EMP 300-00530 rotor weighs 0.033 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the EMP 300-00530 rotor?\u003c\/strong\u003e The UPC for the EMP 300-00530 distributor rotor is 840080402574.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to replace other ignition parts along with this rotor?\u003c\/strong\u003e During a tune-up, the 300-00530 rotor is typically replaced together with the contact set, condenser, and distributor cap to restore reliable ignition performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich distributor number should I check before ordering?\u003c\/strong\u003e Confirm your engine's distributor number matches IBM-7014A, IBM-7011, or IBM-7013 before ordering the 300-00530 rotor, since each corresponds to a specific engine application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 300-00530 rotor fit both 6-cylinder and 8-cylinder engines?\u003c\/strong\u003e Yes, the same 300-00530 rotor is used across 6-cylinder 3.8L engines and 8-cylinder 305, 350, and 454 cid engines, provided the distributor number matches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this rotor for a Chrysler marine engine?\u003c\/strong\u003e The EMP 300-00530 rotor is cataloged under Chrysler inboard tune-up parts and fits the GM-based 3.8L, 305, 350, and 454 cid engine distributors listed for these applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 300-00530 rotor for 305, 350, and 454 cid engines interchangeably?\u003c\/strong\u003e Yes, the same 300-00530 rotor applies to 305, 350, and 454 cid 8-cylinder engines as long as the distributor number is IBM-7011 or IBM-7013.\u003c\/p\u003e","brand":"EMP","offers":[{"title":"Default Title","offer_id":48991284330715,"sku":"EMP-300-00530","price":7.92,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/EMP-300-00530-MerCruiser-Volvo-Rotor__75783.1722510930.500.750.jpg?v=1785329102"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/collections\/EMP-300-00530-MerCruiser-Volvo-Rotor__75783.1722510930.500.750_9dcadb4d-3a3f-402a-b4a4-63a52e4ff026.jpg?v=1785356552","url":"https:\/\/www.goodvibesmarina.com\/collections\/gvcat-engine-parts-systems-ignition-starting-distributor-components-distributor-caps-rotors.oembed?page=2","provider":"Good Vibes Marina","version":"1.0","type":"link"}