{"title":"Ignition Tune-Up Kits \u0026 Tools","description":null,"products":[{"product_id":"sierra-18-5003-ignition-tune-up-kit-for-johnson-evinrude-outboards-replaces-omc-172806-9-9-40-hp","title":"Sierra 18-5003 Ignition Tune-Up Kit, Replaces 172806, for Johnson\/Evinrude 9.9, 15, 35, 40 HP and 40 Comm Outboards","description":"\u003cp\u003eThe Sierra 18-5003 Tune-Up Kit is a complete ignition service kit for select Johnson\/Evinrude outboard engines, bundling the two electrical components most commonly replaced during a routine tune-up: condensers and contact sets. Each kit contains two Sierra 18-5205 condensers (cross-referenced to OEM number 581419) and two Sierra 18-5141 contact sets, giving a technician or DIY boater everything needed to service both ignition points in one purchase instead of sourcing condensers and contact sets separately.\u003c\/p\u003e\u003cp\u003eThe kit is designed for Johnson\/Evinrude 9.9 HP, 15 HP, 35 HP, 40 HP, and 40 Comm outboard engines, and it replaces the original Johnson\/Evinrude tune-up kit numbered 172806. Because fit is specific to these engine and horsepower designations, confirming the OEM number against your outboard before ordering is recommended. Sierra manufactures each component in the kit to meet or exceed the performance of the original equipment part it replaces, so ignition timing and spark quality after installation match what the OEM kit delivered when new.\u003c\/p\u003e\u003cp\u003eAt 0.1 pounds, the kit ships as a compact parts set rather than a bulky assembly, making it easy to keep as a spare aboard the boat or in a service kit for scheduled maintenance.\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 18-5003\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 172806\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e (2) Sierra 18-5205 Condensers, (2) Sierra 18-5141 Contact Sets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondenser OEM Number:\u003c\/strong\u003e 581419\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Johnson\/Evinrude 9.9 HP, 15 HP, 35 HP, 40 HP, 40 Comm outboard engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999318251\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eJohnson\/Evinrude 9.9 HP outboard engines\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 15 HP outboard engines\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 35 HP outboard engines\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 40 HP outboard engines\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 40 Comm outboard engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e172806\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhich outboard engines is the Sierra 18-5003 tune-up kit designed for?\u003c\/strong\u003e The 18-5003 kit is designed for Johnson\/Evinrude 9.9 HP, 15 HP, 35 HP, 40 HP, and 40 Comm outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5003 tune-up kit include?\u003c\/strong\u003e Each 18-5003 kit contains two Sierra 18-5205 condensers and two Sierra 18-5141 contact sets, covering both ignition components needed for a full tune-up in one package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-5003 replace?\u003c\/strong\u003e It replaces Johnson\/Evinrude OEM part number 172806.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the condenser in this kit a genuine Sierra part?\u003c\/strong\u003e Yes, the condensers included in the 18-5003 kit are genuine Sierra 18-5205 condensers, cross-referenced to OEM number 581419.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many contact sets and condensers come in one 18-5003 kit?\u003c\/strong\u003e Two of each: (2) Sierra 18-5141 contact sets and (2) Sierra 18-5205 condensers, enough to service both ignition points on the applicable outboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5003 kit fit a 25 HP or 50 HP Johnson\/Evinrude outboard?\u003c\/strong\u003e No, the 18-5003 kit is fit-specific to 9.9 HP, 15 HP, 35 HP, 40 HP, and 40 Comm Johnson\/Evinrude engines, so a 25 HP or 50 HP model is not covered; check part numbers before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-5003 kit meet OEM performance standards?\u003c\/strong\u003e Yes, Sierra builds the 18-5003 kit's components to meet or exceed the original equipment tune-up kit (172806) it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the weight of the Sierra 18-5003 tune-up kit?\u003c\/strong\u003e The 18-5003 tune-up kit weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to install the 18-5003 tune-up kit?\u003c\/strong\u003e The condensers and contact sets in the 18-5003 kit are standard ignition wear items replaced during a routine outboard tune-up on the applicable Johnson\/Evinrude engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5003 kit?\u003c\/strong\u003e The UPC for the Sierra 18-5003 tune-up kit is 030999318251.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the part number matter when ordering a tune-up kit for these engines?\u003c\/strong\u003e Yes, the 18-5003 kit corresponds specifically to OEM number 172806 for Johnson\/Evinrude 9.9, 15, 35, 40 HP, and 40 Comm engines, so matching the part number ensures the correct condensers and contact sets for your engine.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988198863067,"sku":"SIE-18-5003","price":32.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5003_lg__34617.1558126751.500.750.jpg?v=1785188317"},{"product_id":"sierra-18-5002-ignition-tune-up-kit-for-evinrude-omc-outboards-replaces-omc-172523-points-condenser-set","title":"Sierra 18-5002 Ignition Tune Up Kit, Replaces OMC 172523, for Evinrude Outboards","description":"\u003cp\u003eThe Sierra 18-5002 Tune Up Kit is a complete ignition service kit for Evinrude outboard engines, built to restore reliable spark and smooth running to an aging or worn ignition system. Sierra engineers this kit to meet or exceed the performance of the original equipment parts it replaces, and Sierra supplies OEM engine manufacturers and boat builders with quality parts every day, so the components in this kit are made to the same standard as what left the factory.\u003c\/p\u003e\u003cp\u003eInside the kit you get a contact set (2 included) and a condenser (2 included), the two wear items that cause hard starting, misfires, and rough idle as a points-type ignition ages. Replacing both together during a tune-up is the standard practice, since a worn condenser will quickly burn out a fresh contact set if left in place. The kit carries a machined exterior finish for a precise fit against the factory ignition components it is designed to service.\u003c\/p\u003e\u003cp\u003eThis kit is designed to replace OMC part number 172523 and is intended for Evinrude outboard engines that use this ignition service kit. Sierra backs the 18-5002 with its standard quality 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 18-5002\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Tune Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Tune Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Contact Set (Qty 2), Condenser 18-5205 (Qty 2)\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 0.14 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 6 x 3 x 2.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999256225\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 172523\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Evinrude outboard engines that use this ignition tune-up kit.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e172523\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5002 Tune Up Kit include?\u003c\/strong\u003e The Sierra 18-5002 Tune Up Kit includes a contact set (quantity 2) and a condenser, part number 18-5205 (quantity 2), the two ignition wear items typically replaced together during a points-type ignition tune-up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-5002 replace?\u003c\/strong\u003e It replaces OMC part number 172523.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit fit my Evinrude outboard?\u003c\/strong\u003e The Sierra 18-5002 is designed for Evinrude outboard engines that use this ignition tune-up kit; confirm your engine originally used OMC part 172523 before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the tune up kit weigh?\u003c\/strong\u003e The Sierra 18-5002 Tune Up Kit weighs 0.14 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the kit packaging?\u003c\/strong\u003e The kit measures 6 x 3 x 2.75 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does the kit include two contact sets and two condensers?\u003c\/strong\u003e Many Evinrude outboards covered by the 18-5002 use a two-cylinder ignition setup, so the kit supplies one contact set and one condenser per cylinder, two of each in total.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I replace the condenser and contact set at the same time?\u003c\/strong\u003e Yes. During an ignition tune-up, replacing the condenser and contact set together, as supplied in the 18-5002 kit, is standard practice since a worn condenser can quickly damage a fresh contact set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5002 an OEM or aftermarket part?\u003c\/strong\u003e The 18-5002 is a Sierra-manufactured tune-up kit engineered to meet or exceed the performance of the original OMC 172523 equipment it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the kit have?\u003c\/strong\u003e The components in the Sierra 18-5002 Tune Up Kit have a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-5002 come with a warranty?\u003c\/strong\u003e Yes, Sierra backs the 18-5002 Tune Up Kit with its standard industry-leading quality warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5002 Tune Up Kit?\u003c\/strong\u003e The UPC for the Sierra 18-5002 Tune Up Kit is 030999256225.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988198961371,"sku":"SIE-18-5002","price":25.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5002_lg__37239.1558126669.500.750.jpg?v=1785188394"},{"product_id":"tune-up-kit-for-omc-evinrude-johnson-outboards-replaces-172522-sierra-18-5006-points-condenser-ignition-kit","title":"Sierra 18-5006 Tune-Up Kit, Replaces OMC 172522, for Evinrude Outboard","description":"\u003cp\u003eThe Sierra 18-5006 Tune-Up Kit is a replacement ignition tune-up kit built for Evinrude outboard engines. It is designed as a direct cross-reference for OMC 172522, giving owners a single-part solution when servicing the ignition system rather than sourcing individual components separately. The kit is packaged as a complete set and includes a condenser (Sierra 18-5199) as one of its contained components, so the parts needed for a routine ignition service are grouped together under one part number.\u003c\/p\u003e\u003cp\u003eAs a Sierra product, the kit is manufactured to be a straightforward swap for the original OMC-numbered part it replaces, making it a practical choice for outboard owners performing scheduled maintenance or troubleshooting ignition performance issues. Because it is sold as a set, it simplifies ordering for a tune-up job by consolidating the needed pieces into one SKU instead of requiring separate purchases.\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 18-5006\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Tune-Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Evinrude Outboard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Condenser (Sierra 18-5199)\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 030999256232\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Front\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eEvinrude Outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOMC 172522\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5006 Tune-Up Kit include?\u003c\/strong\u003e The kit includes a condenser, Sierra part number 18-5199, as one of its contained components for servicing the ignition system on Evinrude outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5006 a direct replacement for OMC 172522?\u003c\/strong\u003e Yes, the Sierra 18-5006 Tune-Up Kit is built to replace OMC part number 172522.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the 18-5006 Tune-Up Kit fit?\u003c\/strong\u003e This tune-up kit is designed for Evinrude outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5006 Tune-Up Kit weigh?\u003c\/strong\u003e The kit weighs 0.17 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-5006 is a genuine Sierra part, sold under Sierra's own part number 18-5006.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5006 Tune-Up Kit?\u003c\/strong\u003e The UPC for the Sierra 18-5006 Tune-Up Kit is 030999256232.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the condenser in this kit be purchased separately?\u003c\/strong\u003e The condenser included in the 18-5006 Tune-Up Kit has its own Sierra part number, 18-5199, indicating it is also available as an individual component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is this tune-up kit positioned on the engine?\u003c\/strong\u003e The 18-5006 Tune-Up Kit is listed with a front auto part position.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM number should I search for to confirm this part fits my engine?\u003c\/strong\u003e Cross-reference OMC 172522 to confirm compatibility with the Sierra 18-5006 Tune-Up Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5006 kit come as a complete set or individual pieces?\u003c\/strong\u003e It is sold as a complete tune-up kit set rather than as individual loose components.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988199059675,"sku":"SIE-18-5006","price":24.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5006_lg__49153.1558126810.500.750.jpg?v=1785188449"},{"product_id":"sierra-18-5011-tune-up-kit-for-johnson-evinrude-outboards-replaces-omc-172521-contact-set-condenser","title":"Sierra 18-5011 Tune Up Kit, Replaces 172521, for Johnson\/Evinrude Outboard Motors","description":"\u003cp\u003eThe Sierra 18-5011 Tune Up Kit is a breaker-point ignition service kit for Johnson\/Evinrude outboard motors, built to bring points-and-condenser ignition systems back to factory-correct operation. The kit is centered on a contact (points) set and a matching condenser, the two wear items that most commonly cause hard starting, misfiring, or a rough idle as an outboard's ignition ages. Sierra manufactures the kit to meet or exceed original equipment quality, and it is designed as a direct equivalent to the OEM tune-up kit these engines originally shipped with, so it drops into the same ignition service points without modification.\u003c\/p\u003e\u003cp\u003eInside the kit you get a contact set and a Sierra 18-5199 condenser, letting you replace both critical ignition wear parts in a single service instead of sourcing them separately. This keeps the ignition timing and dwell consistent with OEM specifications, which is important for reliable spark and smooth running on points-type Johnson\/Evinrude outboards. The components are made of a plastic, metal, and composite construction consistent with OEM points-and-condenser hardware, and the kit is packaged as a complete 1-count service unit ready for installation.\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 18-5011\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Tune-Up Kit (Contact Set and Condenser)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 172521\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContains:\u003c\/strong\u003e Contact Set (O.E.# 580148, Qty 2); Condenser, Sierra 18-5199 (O.E.# 580321, Qty 1)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.09 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic, Metal, Composite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e Outboard Motor Maintenance and Repair\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282259273\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThe Sierra 18-5011 Tune Up Kit is designed for Johnson\/Evinrude outboard motors using breaker-point ignition components that match OEM part 172521.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e172521\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5011 Tune Up Kit include?\u003c\/strong\u003e The kit includes a contact (points) set and a Sierra 18-5199 condenser, the two core ignition wear items needed for a breaker-point tune-up on a Johnson\/Evinrude outboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-5011 kit replace?\u003c\/strong\u003e Sierra 18-5011 replaces OEM part number 172521.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit fit any outboard motor?\u003c\/strong\u003e No, the Sierra 18-5011 Tune Up Kit is designed specifically for Johnson\/Evinrude outboard motors that use breaker-point ignition systems; always confirm the original part matches 172521 before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5011 Tune Up Kit weigh?\u003c\/strong\u003e It weighs 0.09 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the condenser included the same as buying it separately?\u003c\/strong\u003e Yes, the condenser packaged in the 18-5011 kit is the Sierra 18-5199 condenser (O.E.# 580321), the same part sold on its own.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the quantity of contact points in the kit?\u003c\/strong\u003e The contact set portion of the 18-5011 kit is supplied in a quantity of 2 (O.E.# 580148).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material are the tune-up kit components made from?\u003c\/strong\u003e The Sierra 18-5011 components are made of plastic, metal, and composite materials, consistent with standard points-and-condenser ignition hardware.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-5011 a genuine Sierra part or aftermarket equivalent?\u003c\/strong\u003e It is a Sierra-manufactured tune-up kit built to meet or exceed original equipment quality as a direct equivalent to OEM part 172521, not a rebranded OEM part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate I need this tune-up kit?\u003c\/strong\u003e Hard starting, misfiring, or a rough idle on a points-type Johnson\/Evinrude outboard often point to worn contact points or a failing condenser, the two items replaced by the Sierra 18-5011 kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many pieces come in the Sierra 18-5011 kit?\u003c\/strong\u003e The kit is sold as a single 1-count tune-up kit containing the contact set and condenser components needed for the service.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988199125211,"sku":"SIE-18-5011","price":16.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5011_lg__79902.1558126919.500.750.jpg?v=1785188759"},{"product_id":"sierra-18-5246-tune-up-kit-for-mercruiser-4-3l-v-6-alpha-bravo-replaces-898253t28","title":"Sierra Tune Up Kit 18-5246, Replaces 898253T28, for Late Model V-6 4.3L Alpha\/Bravo","description":"\u003cp\u003eThe Sierra 18-5246 Tune Up Kit is a direct-fit ignition service kit designed for late model V-6, 4.3L Alpha\/Bravo sterndrive engines. This kit brings together the ignition components needed to perform a complete tune-up in one package, restoring reliable spark and smooth engine performance without having to source individual parts separately. It is built to replace the OEM 898253T28 ignition kit, giving boat owners and marine technicians a straightforward, single-part-number solution for scheduled maintenance or ignition troubleshooting.\u003c\/p\u003e\u003cp\u003eKeeping ignition components fresh is critical on marine engines, where exposure to moisture and vibration accelerates wear on distributor caps, rotors, and related ignition parts. Using a complete tune-up kit rather than mixing components from multiple sources helps ensure proper fit and consistent quality across all the included parts. The Sierra 18-5246 is intended specifically for late model V-6, 4.3L engines equipped with Alpha or Bravo sterndrives, so confirming this engine and drive combination before ordering is recommended.\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 18-5246\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Tune Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.79 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282167578\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Tune Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 898253T28\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eLate model V-6, 4.3L (Alpha\/Bravo)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e898253T28\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the Sierra 18-5246 tune up kit designed for?\u003c\/strong\u003e This kit is designed for late model V-6, 4.3L engines with Alpha or Bravo sterndrives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-5246 replace?\u003c\/strong\u003e It replaces OEM part number 898253T28.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5246 kit a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-5246 is manufactured by Sierra as a direct-fit ignition tune-up kit, sold under Sierra's own part number rather than as a generic aftermarket substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the tune up kit weigh?\u003c\/strong\u003e The Sierra 18-5246 tune up kit weighs 0.79 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-5246 kit?\u003c\/strong\u003e It is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit fit a V-8 sterndrive engine?\u003c\/strong\u003e No. The 18-5246 is specified for late model V-6, 4.3L Alpha\/Bravo engines; V-8 applications use a different Sierra part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-5246 kit?\u003c\/strong\u003e The package includes a tune up kit sized and configured for the late model V-6, 4.3L Alpha\/Bravo engine application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use OEM number 898253T28 to look up this kit?\u003c\/strong\u003e Yes, 898253T28 is the OEM cross-reference number for the Sierra 18-5246 tune up kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit work with both Alpha and Bravo drives?\u003c\/strong\u003e Yes, the 18-5246 is designated for late model V-6, 4.3L engines paired with either Alpha or Bravo sterndrives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5246?\u003c\/strong\u003e The UPC for this tune up kit is 808282167578.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988202729691,"sku":"SIE-18-5246","price":90.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5246_lg__31599.1558127912.500.750.jpg?v=1785188507"},{"product_id":"sierra-18-5247-marine-tune-up-kit-for-mercruiser-v-8-350-mag-5-0l-mx-6-2l-alpha-bravo-replaces-8m0061335-898253t29","title":"Sierra Tune-Up Kit 18-5247, Replaces 898253T28, for Late Model V-6 4.3L Alpha\/Bravo Engines","description":"\u003cp\u003eThe Sierra 18-5247 Tune-Up Kit is an engine ignition tune-up kit built for late model V-6, 4.3L engines equipped with Alpha or Bravo sterndrives. It is designed as a direct replacement for OEM part 898253T28, giving boat owners and marine technicians a straightforward way to restore ignition system performance during a scheduled tune-up or when addressing a rough-running or misfiring engine.\u003c\/p\u003e\u003cp\u003eSierra manufactures this kit to meet or exceed the specifications of the original equipment part it replaces, and the components are engineered to hold up to the demands of continuous marine operation, including exposure to moisture, vibration, and temperature swings that are harsher than typical automotive conditions. Because Sierra supplies parts to OEM engine manufacturers and boat builders, this kit is built to the same fit and function standards as the factory original.\u003c\/p\u003e\u003cp\u003ePart number 18-5247 is intended specifically for late model V-6, 4.3L Alpha\/Bravo applications. Sierra also offers a separate tune-up kit, 18-5291, for late model V-8 (Alpha\/Bravo 350 Mag, 5.0L, and MX 6.2L) engines, so it is important to confirm engine size and drive type before ordering to make sure you get the correct kit for your application.\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 18-5247\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 898253T28\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Late model V-6, 4.3L (Alpha\/Bravo)\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 7 x 3.5 x 4.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282167585\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eLate model V-6, 4.3L engines (Alpha\/Bravo)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e898253T28\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5247 tune-up kit fit?\u003c\/strong\u003e Part 18-5247 is built for late model V-6, 4.3L engines equipped with an Alpha or Bravo sterndrive.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-5247 replace OEM part 898253T28?\u003c\/strong\u003e Yes, Sierra 18-5247 is a direct replacement for OEM number 898253T28.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 18-5247 and 18-5291 tune-up kits?\u003c\/strong\u003e 18-5247 is for late model V-6, 4.3L (Alpha\/Bravo) engines, while 18-5291 is a separate kit for late model V-8 engines (Alpha\/Bravo 350 Mag, 5.0L, and MX 6.2L) -- confirm your engine size before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5247 tune-up kit weigh?\u003c\/strong\u003e The kit weighs 0.9 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the packaged dimensions of this kit?\u003c\/strong\u003e The Sierra 18-5247 tune-up kit measures 7 x 3.5 x 4.75 inches as packaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-5247 a genuine part or a generic substitute?\u003c\/strong\u003e It is a genuine Sierra marine part engineered to meet or exceed the original equipment part it replaces, OEM number 898253T28.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the 18-5247 tune-up kit?\u003c\/strong\u003e The UPC for this kit is 808282167585.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this kit still in production?\u003c\/strong\u003e Sierra part 18-5247 is not discontinued by the manufacturer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-5247 fit a V-8 engine?\u003c\/strong\u003e No, 18-5247 is specified only for late model V-6, 4.3L Alpha\/Bravo applications; V-8 Alpha\/Bravo 350 Mag, 5.0L, and MX 6.2L engines use the separate 18-5291 kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat brand is part number 18-5247?\u003c\/strong\u003e 18-5247 is manufactured by Sierra.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988202795227,"sku":"SIE-18-5247","price":93.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5247_lg__51302.1558127981.500.750.jpg?v=1785188184"},{"product_id":"sierra-18-5264-ignition-tune-up-kit-for-v-8-prestolite-clip-down-cap-replaces-oem-835705-glm-72660","title":"Sierra 18-5264 Tune Up Kit - Replaces 835705, 855846-2 - V-8 with Prestolite Clip-Down Cap","description":"\u003cp\u003eThe Sierra 18-5264 Tune Up Kit is a complete ignition tune-up bundle for V-8 marine engines equipped with a Prestolite clip-down cap. Instead of sourcing a contact set, condenser, and rotor separately, this kit packages one of each into a single part number, simplifying ordering for a full ignition service in one pass. Sierra engineers its parts to meet or exceed the original equipment components they replace, built to withstand the vibration, moisture, and heat cycling typical of the marine environment.\u003c\/p\u003e\u003cp\u003eEach kit contains one Sierra 18-5303 contact set, one Sierra 18-5345 condenser, and one Sierra 18-5425 rotor, the three components most commonly serviced during a routine ignition tune-up. The kit is designed specifically for V-8 engines using a Prestolite clip-down distributor cap, so confirm your engine's cap style before ordering. All Sierra parts are backed by Sierra's Customer Satisfaction Warranty, covering defects in workmanship and materials for the useful life of the product.\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 18-5264\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Tune-Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Application:\u003c\/strong\u003e V-8 with Prestolite Clip-Down Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Contact Set (18-5303), Condenser (18-5345), Rotor (18-5425)\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 0.14 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 6.26 x 5.94 x 1.42 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 835705, 855846-2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eV-8 engines with Prestolite clip-down distributor cap\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e835705\u003c\/li\u003e\n\u003cli\u003e855846-2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5264 tune up kit fit?\u003c\/strong\u003e This kit is designed for V-8 engines that use a Prestolite clip-down distributor cap, so it is intended for that specific cap style rather than all V-8 marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-5264 kit?\u003c\/strong\u003e The kit contains one Sierra 18-5303 contact set, one Sierra 18-5345 condenser, and one Sierra 18-5425 rotor, covering the three parts typically replaced during an ignition tune-up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5264 kit replace OEM part 835705?\u003c\/strong\u003e Yes, Sierra 18-5264 replaces OEM numbers 835705 and 855846-2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5264 a genuine Sierra part or aftermarket?\u003c\/strong\u003e It is a genuine Sierra-manufactured tune up kit, built to meet or exceed the original equipment parts it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the tune up kit weigh?\u003c\/strong\u003e The Sierra 18-5264 tune up kit weighs 0.14 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I buy the contact set, condenser, or rotor separately instead of the full kit?\u003c\/strong\u003e Yes, the individual components are also sold on their own as Sierra 18-5303 (contact set), 18-5345 (condenser), and 18-5425 (rotor), but 18-5264 bundles all three in one kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the tune up kit packaging or components?\u003c\/strong\u003e The Sierra 18-5264 kit is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there a warranty on the 18-5264 tune up kit?\u003c\/strong\u003e Sierra parts, including the 18-5264 tune up kit, are covered under Sierra's Customer Satisfaction Warranty against defects in workmanship and materials for the useful life of the product.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 18-5264 and 18-5265 kits?\u003c\/strong\u003e Sierra offers both 18-5264 and 18-5265 as separate tune up kit part numbers; 18-5264 is specifically for V-8 engines with a Prestolite clip-down cap, so confirm your engine's cap and configuration before choosing between them.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many of each part come in the kit?\u003c\/strong\u003e The 18-5264 kit contains one each of the contact set, condenser, and rotor, for a total of one full ignition tune-up set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-5264 kit?\u003c\/strong\u003e The Sierra 18-5264 tune up kit ships in packaging measuring 6.26 x 5.94 x 1.42 inches.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988202991835,"sku":"SIE-18-5264","price":39.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5264_lg__26925.1558128833.500.750.jpg?v=1785189201"},{"product_id":"sierra-18-5251-marine-tune-up-kit-for-mallory-8-cyl-tall-cap-distributor-contact-set-condenser-rotor-replaces-omc-johnson-evinrude-173619","title":"Sierra 18-5251 Tune Up Kit, Replaces OMC 173619, for Mallory 8 Cylinder Tall Cap Distributor, White","description":"\u003cp\u003eThe Sierra 18-5251 Tune Up Kit is a distributor tune-up kit built for the Mallory 8 Cylinder Tall Cap distributor used in Chrysler inboard marine engines. It is finished in white and features machined components engineered to meet or exceed the fit and performance of the original equipment part it replaces. The kit is designed as a direct equivalent for owners servicing Mallory-equipped distributors who need a reliable, properly fitted replacement rather than a generic substitute.\u003c\/p\u003e\u003cp\u003eSierra manufactures this kit to be interchangeable with GLM, Evinrude\/Johnson, and Mallory part numbers, making it a straightforward replacement option when the original distributor components are worn, cracked, or no longer firing consistently. Every Sierra part is backed by Sierra's customer satisfaction warranty, giving buyers confidence that the 18-5251 will perform to OEM standards once installed. This kit operates on a 12 Volt DC electrical system, consistent with standard inboard ignition setups.\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 18-5251\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\u003eFitment:\u003c\/strong\u003e Mallory 8 Cylinder Tall Cap Distributor\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\u003eVoltage:\u003c\/strong\u003e 12 Volts (DC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.13 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 1.75 x 3 x 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999256263\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMallory 8 Cylinder Tall Cap distributor\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 72620\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 173619\u003c\/li\u003e\n\u003cli\u003eMallory 9-29301\u003c\/li\u003e\n\u003cli\u003eOMC 173619\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5251 Tune Up Kit fit?\u003c\/strong\u003e The Sierra 18-5251 is built for the Mallory 8 Cylinder Tall Cap distributor found on Chrysler inboard marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5251 the same as OMC 173619?\u003c\/strong\u003e Yes, the 18-5251 is designed to be interchangeable with OMC 173619 as well as Evinrude\/Johnson 173619.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat other part numbers cross-reference to 18-5251?\u003c\/strong\u003e 18-5251 is interchangeable with GLM 72620, Mallory 9-29301, and OMC\/Evinrude-Johnson 173619.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5251 Tune Up Kit weigh?\u003c\/strong\u003e This Sierra tune-up kit weighs 0.13 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5251 kit?\u003c\/strong\u003e The Sierra 18-5251 Tune Up Kit measures 1.75 x 3 x 6 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-5251 Tune Up Kit?\u003c\/strong\u003e It is finished in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat voltage system is the 18-5251 designed for?\u003c\/strong\u003e The Sierra 18-5251 is rated for a 12 Volt DC ignition system, standard for Chrysler inboard applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5251 a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-5251 is a genuine Sierra part, manufactured to meet or exceed the original equipment component it replaces and covered by Sierra's customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the finish on the 18-5251 components?\u003c\/strong\u003e The components in the Sierra 18-5251 kit have a machined exterior finish.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988203057371,"sku":"SIE-18-5251","price":33.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5251_lg__59420.1558128119.500.750.jpg?v=1785188217"},{"product_id":"sierra-18-5260-marine-tune-up-kit-replaces-omc-173829-fits-omc-sterndrive-cobra-with-prestolite-6-8-cyl-distributors","title":"Sierra 18-5260 Marine Tune-Up Kit, Replaces OMC 173829, for 3.8L and 305\/350\/454 Prestolite-Equipped Engines","description":"\u003cp\u003eThe Sierra 18-5260 Marine Tune-Up Kit is an ignition tune-up part engineered for marine engines fitted with a Prestolite distributor. It is built to meet or exceed the original equipment part it replaces and is designed as a direct cross to OMC 173829, with additional interchange to GLM, Evinrude\/Johnson, and Mallory numbers. The kit carries a machined exterior finish and is manufactured to Sierra's standard fit and function tolerances for reliable ignition system performance.\u003c\/p\u003e\u003cp\u003eThis part corresponds to Prestolite distributor applications IBM-7014A (6 cylinder, 3.8L engine, model years 1984-88), IBM-7011 (8 cylinder, 305, 350, and 454 cid engines, model years 1976-82), and IBM-7013 (8 cylinder, 305, 350, and 454 cid engines, model years 1983-88). These distributor setups are also associated with related Sierra ignition components including contact set 18-5303, condenser 18-5345, rotor 18-5403, and distributor cap (18-5352 or 18-5353 depending on engine application). Buyers can also cross-check this part against OMC Sterndrive\/Cobra Stern Drive applications using a Prestolite 8-cylinder distributor. All Sierra parts, including the 18-5260, are covered under Sierra's 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 18-5260\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999318657\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Tune-Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Distributor Numbers:\u003c\/strong\u003e Prestolite IBM-7014A, IBM-7011, IBM-7013\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e 6 Cyl. 3.8L Engine (1984-88); 8 Cyl. 305, 350, 454 Engine (1976-82 and 1983-88)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompanion Distributor Components:\u003c\/strong\u003e Contact Set 18-5303, Condenser 18-5345, Rotor 18-5403, Distributor Cap 18-5352\/18-5353\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e OMC 173829\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchangeable With:\u003c\/strong\u003e GLM 72650, Evinrude\/Johnson 173829, Evinrude\/Johnson 987926, Mallory 9-29304, Mallory 9-29309, OMC 987926\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.16 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 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\u003e6 Cyl. 3.8L Engine, Prestolite Distributor IBM-7014A, model years 1984-88\u003c\/li\u003e\n\u003cli\u003e8 Cyl. 305, 350, 454 Engine, Prestolite Distributor IBM-7011, model years 1976-82\u003c\/li\u003e\n\u003cli\u003e8 Cyl. 305, 350, 454 Engine, Prestolite Distributor IBM-7013, model years 1983-88\u003c\/li\u003e\n\u003cli\u003eOMC Sterndrive\/Cobra Stern Drive applications using a Prestolite 8 cylinder distributor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC 173829\u003c\/li\u003e\n\u003cli\u003eOMC 987926\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 173829\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 987926\u003c\/li\u003e\n\u003cli\u003eGLM 72650\u003c\/li\u003e\n\u003cli\u003eMallory 9-29304\u003c\/li\u003e\n\u003cli\u003eMallory 9-29309\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5260 tune-up kit fit?\u003c\/strong\u003e The Sierra 18-5260 fits 6 cylinder 3.8L engines from model years 1984-88 using a Prestolite IBM-7014A distributor, and 8 cylinder 305, 350, and 454 cid engines from model years 1976-82 (IBM-7011 distributor) and 1983-88 (IBM-7013 distributor).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5260 a direct replacement for OMC 173829?\u003c\/strong\u003e Yes, the Sierra 18-5260 is designed as a direct cross-reference to OMC part number 173829.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5260 kit work with Evinrude\/Johnson and Mallory ignition parts?\u003c\/strong\u003e It interchanges with Evinrude\/Johnson 173829 and 987926, Mallory 9-29304 and 9-29309, GLM 72650, and OMC 987926, in addition to OMC 173829.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5260 tune-up kit weigh?\u003c\/strong\u003e The Sierra 18-5260 weighs 0.16 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5260?\u003c\/strong\u003e The Sierra 18-5260 measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5260 fit an OMC Sterndrive or Cobra Stern Drive?\u003c\/strong\u003e It is compatible with OMC Sterndrive\/Cobra Stern Drive setups that use a Prestolite 8 cylinder distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the Sierra 18-5260 have?\u003c\/strong\u003e The 18-5260 has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5260 genuine Sierra or aftermarket?\u003c\/strong\u003e The 18-5260 is a genuine Sierra part, manufactured to meet or exceed the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat distributor number is the 18-5260 tune-up kit paired with?\u003c\/strong\u003e Depending on the engine, the 18-5260 corresponds to Prestolite distributor IBM-7014A, IBM-7011, or IBM-7013.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre there related ignition components that go with the 18-5260?\u003c\/strong\u003e For the same distributor applications, Sierra also lists contact set 18-5303, condenser 18-5345, rotor 18-5403, and distributor cap 18-5352 or 18-5353.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5260 covered by a warranty?\u003c\/strong\u003e Yes, the Sierra 18-5260 is covered under Sierra's customer satisfaction warranty like all Sierra parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5260 fit 4 cylinder engines?\u003c\/strong\u003e No, the 18-5260 tune-up kit fitment covers 6 cylinder 3.8L and 8 cylinder 305\/350\/454 engines using the listed Prestolite distributors.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988204171483,"sku":"SIE-18-5260","price":22.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5260_lg_1__44829.1558128730.500.750.jpg?v=1785188218"},{"product_id":"marine-ignition-tune-up-kit-for-delco-in-line-4-single-point-replaces-glm-71720-sierra-18-5268","title":"Sierra 18-5268 Tune Up Kit for Delco In-Line 4 Single Point Ignition","description":"\u003cp\u003eThe Sierra 18-5268 is a complete ignition tune-up kit engineered for Delco In-Line 4 cylinder engines using a single point ignition system, a configuration commonly found on GM 4 cylinder marine engines. Rather than sourcing individual ignition components separately, this kit bundles everything needed to refresh the ignition system in one part number, helping restore reliable spark and smoother running to an aging or worn distributor setup.\u003c\/p\u003e\u003cp\u003eInside the kit, boat owners get one each of four core ignition components: a contact set (breaker points), a condenser, a rotor, and a distributor cap. Each component is manufactured to meet or exceed the original equipment part it replaces, and is built to hold up in the demanding marine environment where heat, vibration, and moisture accelerate ignition component wear. Replacing these parts together as a kit ensures the contact set gap, condenser capacitance, and rotor\/cap contact surfaces are all fresh at the same time, which is the recommended approach for single point ignition maintenance since these wear items affect each other's performance.\u003c\/p\u003e\u003cp\u003eThis kit is designed for engines and applications using the Delco In-Line 4, single point ignition configuration. It is backed by Sierra's Customer Satisfaction Warranty, which covers defects in workmanship and materials for the useful life of the product.\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 18-5268\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Tune-Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Application:\u003c\/strong\u003e Delco In-Line 4, Single Point Ignition (GM 4 Cyl.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e 1 Contact Set (18-5311), 1 Condenser (18-5345), 1 Rotor (18-5418), 1 Distributor Cap (18-5385)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.52 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 8 x 6 x 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282234034\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDelco In-Line 4 cylinder engines with single point ignition\u003c\/li\u003e\n\u003cli\u003eGM 4 Cyl. Single point ignition applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eGLM 71720\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5268 tune-up kit include?\u003c\/strong\u003e The kit contains one each of four ignition components: a contact set (part 18-5311), a condenser (part 18-5345), a rotor (part 18-5418), and a distributor cap (part 18-5385).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the 18-5268 tune-up kit fit?\u003c\/strong\u003e It is designed for Delco In-Line 4 cylinder engines with a single point ignition system, the type used on GM 4 cylinder single point applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5268 kit replace GLM 71720?\u003c\/strong\u003e Yes, Sierra 18-5268 is a direct replacement for GLM 71720.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to buy the contact set, condenser, rotor, and cap separately?\u003c\/strong\u003e No, all four components come together in the single 18-5268 kit, so there is no need to order the contact set, condenser, rotor, and distributor cap individually.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5268 tune-up kit weigh?\u003c\/strong\u003e The kit weighs 0.52 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5268 kit packaging?\u003c\/strong\u003e The packaged kit measures 8 x 6 x 3 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5268 kit designed for single point or electronic ignition?\u003c\/strong\u003e This kit is built for single point ignition systems, specifically the Delco In-Line 4 single point configuration, not electronic ignition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish do the components in the 18-5268 kit have?\u003c\/strong\u003e The components have a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5268 kit covered by a warranty?\u003c\/strong\u003e Yes, the 18-5268 kit qualifies for Sierra's Customer Satisfaction Warranty, which covers defects in workmanship and materials for the useful life of the product.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace the contact set, condenser, rotor, and cap all at once?\u003c\/strong\u003e For single point ignition systems like the one the 18-5268 kit is designed for, these wear components affect each other's performance, so replacing them together as a set restores consistent ignition timing and spark quality rather than addressing one worn part at a time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5268 tune-up kit?\u003c\/strong\u003e The UPC for the 18-5268 tune-up kit is 808282234034.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988204204251,"sku":"SIE-18-5268","price":37.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5268_lg__25430.1558129081.500.750.jpg?v=1785188858"},{"product_id":"sierra-18-5250-ignition-tune-up-kit-for-prestolite-8-cylinder-marine-engines-contact-set-condenser-and-rotor-replaces-mallory-9-29300-omc-172527","title":"Sierra 18-5250 Ignition Tune-Up Kit for MerCruiser 110\/120\/140\/2.5L\/3.0L GM 153\/181 L4 Delco Ignition","description":"\u003cp\u003eThe Sierra 18-5250 Ignition Tune-Up Kit is a complete ignition service kit built for GM in-line 4 and 6 cylinder marine engines running a conventional Delco contact-point ignition system with standard rotation (it is not compatible with Thunderbolt ignition systems). It is precision-built to meet or exceed the original equipment components it replaces, giving boat owners a straightforward way to restore reliable spark and smooth running during a scheduled tune-up.\u003c\/p\u003e\u003cp\u003eThe kit is sized for MerCruiser 110, 120, and 140 I\/O models powered by the GM 153 cid and 181 cid L4 engines, as well as the 2.5L and 3.0L L4 models that continued to use the contact-point ignition into the late 1980s. Coverage spans specific serial number ranges for each model, so matching the engine's serial number to the correct application ensures the kit's components are the right fit before installation. The components carry a machined exterior finish 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 18-5250\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 6 x 2.75 x 1.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.14 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition System Compatibility:\u003c\/strong\u003e Conventional Delco ignition, standard rotation (excludes Thunderbolt ignition)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999256256\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e GLM 72610, Evinrude\/Johnson 172527, Mallory 9-29300, Mercruiser 34235T1, Mercruiser 34235Q1, OMC 175257, OMC 172527\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 110 (153 cid GM L4), 1963-1966, Serial 1537370-2044033\u003c\/li\u003e\n\u003cli\u003eMerCruiser 120 (153 cid GM L4), 1964-1986, Serial 1666601-B531853\u003c\/li\u003e\n\u003cli\u003eMerCruiser 2.5L (153 cid GM L4), 1987-1989, Serial B531854-C853255\u003c\/li\u003e\n\u003cli\u003eMerCruiser 140 (181 cid GM L4), 1968-1986, Serial 2508261-B450800\u003c\/li\u003e\n\u003cli\u003eMerCruiser 3.0L (181 cid GM L4), 1987-1989, Serial B450801-C856558\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 72610\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 172527\u003c\/li\u003e\n\u003cli\u003eMallory 9-29300\u003c\/li\u003e\n\u003cli\u003eMercruiser 34235T1\u003c\/li\u003e\n\u003cli\u003eMercruiser 34235Q1\u003c\/li\u003e\n\u003cli\u003eOMC 175257\u003c\/li\u003e\n\u003cli\u003eOMC 172527\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5250 tune-up kit fit?\u003c\/strong\u003e The Sierra 18-5250 fits GM in-line 4 cylinder marine engines with a conventional Delco contact-point ignition system, standard rotation, including MerCruiser 110 and 120 (153 cid L4), MerCruiser 140 (181 cid L4), and the 2.5L and 3.0L L4 models within their listed serial number ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5250 work with a Thunderbolt ignition system?\u003c\/strong\u003e No. The Sierra 18-5250 is designed for conventional Delco contact-point ignitions with standard rotation and specifically excludes engines equipped with Thunderbolt ignition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5250 tune-up kit weigh?\u003c\/strong\u003e The Sierra 18-5250 tune-up kit weighs 0.14 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5250 kit packaging?\u003c\/strong\u003e The Sierra 18-5250 measures 6 x 2.75 x 1.75 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5250 an OEM part or aftermarket?\u003c\/strong\u003e It is an aftermarket kit manufactured by Sierra, built to meet or exceed the specifications of the original equipment ignition components it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does the 18-5250 cross-reference to?\u003c\/strong\u003e The Sierra 18-5250 is interchangeable with GLM 72610, Evinrude\/Johnson 172527, Mallory 9-29300, Mercruiser 34235T1, Mercruiser 34235Q1, and OMC 175257\/172527.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5250 fit a MerCruiser 3.0L engine?\u003c\/strong\u003e Yes, MerCruiser 3.0L models (181 cid GM L4) built between 1987 and 1989, serial numbers B450801 through C856558, use the Sierra 18-5250 tune-up kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5250 fit a MerCruiser 2.5L engine?\u003c\/strong\u003e Yes, the MerCruiser 2.5L (153 cid GM L4) built between 1987 and 1989, serial numbers B531854 through C853255, uses the Sierra 18-5250 tune-up kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if the 18-5250 fits my specific MerCruiser engine?\u003c\/strong\u003e Match your engine's serial number to the ranges listed for your model: MerCruiser 110 (1537370-2044033), 120 (1666601-B531853), 140 (2508261-B450800), 2.5L (B531854-C853255), or 3.0L (B450801-C856558), all covered by the Sierra 18-5250.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish do the components in the 18-5250 kit have?\u003c\/strong\u003e The components in the Sierra 18-5250 tune-up kit have a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5250 covered under warranty?\u003c\/strong\u003e Yes, the Sierra 18-5250 is covered under Sierra's standard customer satisfaction warranty, the same warranty applied across Sierra's marine parts line.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988204237019,"sku":"SIE-18-5250","price":23.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5250_lg__37359.1558128058.500.750.jpg?v=1785188006"},{"product_id":"marine-tune-up-kit-for-mallory-tall-v-8-single-point-distributors-top-terminal-sierra-18-5271","title":"Sierra 18-5271 Marine Tune Up Kit for Mallory V-8 Single Point Top Terminal Distributors","description":"\u003cp\u003eThe Sierra 18-5271 Marine Tune Up Kit is a display-packaged ignition service kit built for Mallory V-8 single point, top terminal distributors used in inboard and sterndrive marine engines. Keeping ignition components fresh is one of the most direct ways to maintain reliable starting and smooth running on a marine V-8, and this kit gathers the components needed for that service into a single package rather than requiring the components to be sourced individually.\u003c\/p\u003e\u003cp\u003eThe kit is packaged specifically for Mallory-brand, V-8, single point, top terminal distributor setups, so it is matched to that ignition configuration rather than being a generic, one-size-fits-all tune up part. It ships in a round, white display package as a complete Tune Up Kit unit.\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 18-5271\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Tune Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Mallory V-8, Single Point, Top Terminal distributor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Tune Up Kit (Display Package)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Color:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Shape:\u003c\/strong\u003e Round\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 808282244354\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMallory V-8, Single Point, Top Terminal distributors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-5271 Tune Up Kit designed to fit?\u003c\/strong\u003e The Sierra 18-5271 is designed for Mallory V-8 distributors with a single point, top terminal configuration, so it is matched to that specific ignition setup rather than being a universal tune up kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5271 kit work with a bottom terminal or dual point distributor?\u003c\/strong\u003e No, the Sierra 18-5271 kit is built specifically for single point, top terminal Mallory V-8 distributors, so it is not the correct match for bottom terminal or dual point configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5271 Tune Up Kit weigh?\u003c\/strong\u003e The Sierra 18-5271 Tune Up Kit weighs 0.71 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes packaged with part number 18-5271?\u003c\/strong\u003e Part number 18-5271 ships as a complete Tune Up Kit in a round, white display package, with the tune up components included as one set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5271 an original Sierra part or an aftermarket copy?\u003c\/strong\u003e 18-5271 is a Sierra brand part number, sold under the Sierra name as its own catalog item rather than a copy of another brand's kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat distributor brand is the 18-5271 kit made for?\u003c\/strong\u003e This kit is made for Mallory distributors, specifically the V-8, single point, top terminal type.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5271 kit fit inline or V-6 engines?\u003c\/strong\u003e The Sierra 18-5271 is specified for V-8 applications with a Mallory single point top terminal distributor; it is not listed for inline or V-6 configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5271 Tune Up Kit?\u003c\/strong\u003e The UPC for the Sierra 18-5271 Tune Up Kit is 808282244354.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5271 kit sold as a single unit or multiple pieces?\u003c\/strong\u003e It is sold as one Tune Up Kit unit, packaged together in a single display package rather than as separate individual pieces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape and color is the 18-5271 packaging?\u003c\/strong\u003e The Sierra 18-5271 Tune Up Kit is packaged in a round, white display package.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988204269787,"sku":"SIE-18-5271","price":52.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5271_lg__42641.1558129280.500.750.jpg?v=1785188551"},{"product_id":"sierra-18-5273-tune-up-kit-for-mercruiser-thunderbolt-iv-v-hei-v-8-replaces-805759t3-cap-and-rotor","title":"Sierra 18-5273 Medium Tune Up Kit for MerCruiser 500 Bulldog 540 V-8 and 800 SC 572 V-8 Engines","description":"\u003cp\u003eThe Sierra 18-5273 Medium Tune Up Kit is built for GM V-8 engines equipped with Thunderbolt IV and V HEI ignition systems, and is designed for use alongside the Sierra 18-5470 Thunderbolt HEI distributor. It covers the ignition-side components needed to service a marine V-8 during a routine tune-up, engineered to meet the demands of high-horsepower engines operating in the marine environment.\u003c\/p\u003e\u003cp\u003eThis kit is application-specific to two MerCruiser inboard configurations: the 500 Bulldog 540 cid V-8 built between 1990 and 2001 (serial number range C577003 through M050281), and the 800 SC 572 cid V-8 built between 1993 and 1998 (serial number D763836 and up). Confirming your engine's serial number against these ranges before ordering will ensure you get the correct tune-up components for your powerhead.\u003c\/p\u003e\u003cp\u003eSierra manufactures this kit to meet or exceed the performance of the original equipment part it replaces, and supplies OEM engine manufacturers and boat builders with parts daily, so build quality and fit are held to the same standard used in original production. The kit ships as a single unit count, ready to install as part of a standard ignition service interval.\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 18-5273\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Tune Up Kit\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 0.77 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282113070\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 00808282113070\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition System Compatibility:\u003c\/strong\u003e GM V-8 engines with Thunderbolt IV and V HEI ignitions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompanion Distributor:\u003c\/strong\u003e Use with Sierra 18-5470 Thunderbolt HEI distributor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment - MerCruiser 500 Bulldog 540 cid V-8:\u003c\/strong\u003e Model years 1990-2001, serial number range C577003 to M050281\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment - MerCruiser 800 SC 572 cid V-8:\u003c\/strong\u003e Model years 1993-1998, serial number D763836 and up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 500 Bulldog 540 cid V-8, model years 1990-2001, serial number C577003 - M050281\u003c\/li\u003e\n\u003cli\u003eMerCruiser 800 SC 572 cid V-8, model years 1993-1998, serial number D763836 and up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5273 tune up kit fit?\u003c\/strong\u003e The Sierra 18-5273 Medium Tune Up Kit fits the MerCruiser 500 Bulldog 540 cid V-8 (model years 1990-2001, serial number range C577003 to M050281) and the MerCruiser 800 SC 572 cid V-8 (model years 1993-1998, serial number D763836 and up).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit work with the Thunderbolt HEI ignition?\u003c\/strong\u003e Yes, the 18-5273 kit is designed for GM V-8 engines running Thunderbolt IV and V HEI ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat distributor should I use with the 18-5273 kit?\u003c\/strong\u003e This tune up kit is intended for use with the Sierra 18-5470 Thunderbolt HEI distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5273 tune up kit weigh?\u003c\/strong\u003e The 18-5273 Medium Tune Up Kit weighs 0.77 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many units come in the 18-5273 kit?\u003c\/strong\u003e The kit ships as a single unit count (1) under Sierra part number 18-5273.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5273 a genuine Sierra part or aftermarket?\u003c\/strong\u003e It is a Sierra-manufactured marine part, engineered to meet or exceed the performance of the original equipment component it replaces, part number 18-5273.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit work on any GM V-8 marine engine?\u003c\/strong\u003e No, the 18-5273 kit is matched to specific MerCruiser applications: the 500 Bulldog 540 cid V-8 and 800 SC 572 cid V-8 within the serial number ranges listed for those models, not GM V-8 engines generally.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I confirm my engine matches the 18-5273 kit before ordering?\u003c\/strong\u003e Check your MerCruiser engine's serial number against the ranges for the 18-5273 kit: C577003 to M050281 for the 500 Bulldog 540 cid V-8, or D763836 and up for the 800 SC 572 cid V-8.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5273 tune up kit?\u003c\/strong\u003e The UPC for the Sierra 18-5273 Medium Tune Up Kit is 808282113070.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose the Sierra 18-5273 over a generic tune up kit?\u003c\/strong\u003e Sierra supplies OEM engine manufacturers and boat builders with parts daily and builds the 18-5273 kit to meet or exceed the original equipment part it replaces, giving it OEM-level fit and performance for the specified MerCruiser applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5273 kit a full engine tune up kit or ignition-specific?\u003c\/strong\u003e The 18-5273 is a Medium Tune Up Kit focused on the ignition-side service items for GM V-8 engines with Thunderbolt IV and V HEI ignitions.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988204794075,"sku":"SIE-18-5273","price":41.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5273__90291.1739458769.500.750.jpg?v=1785188972"},{"product_id":"sierra-18-5275-marine-tune-up-kit-for-prestolite-v-8-single-point-screw-cap-distributor-points-condenser-cap-and-rotor","title":"Sierra 18-5275 Marine Tune Up Kit for Prestolite Single Point V-8 Distributors, Screw Cap","description":"\u003cp\u003eThe Sierra 18-5275 Marine Tune Up Kit is built for Prestolite single-point, screw-cap V-8 distributors used on marine inboard and sterndrive engines. It is designed as a complete ignition service kit, bringing together the components needed to restore proper spark timing, contact point operation, and distributor cap sealing in one purchase, rather than sourcing individual ignition parts separately.\u003c\/p\u003e\u003cp\u003eThis kit is engineered for the harsh marine environment, where heat, vibration, and moisture accelerate wear on ignition contact points and distributor components more than they do in automotive use. Sierra manufactures the kit to meet or exceed the specifications of the original equipment components it replaces, and it is intended for the Prestolite single-point distributor with a screw-on cap configuration, as fitted to certain 8-cylinder 305, 350, and 454 cubic inch marine V-8 engines.\u003c\/p\u003e\u003cp\u003eUse this kit during scheduled ignition maintenance or when diagnosing a rough-running, hard-starting, or misfiring engine traced back to worn contact points or a deteriorated distributor cap. Because it is matched to the single-point, screw-cap distributor design, it is not interchangeable with electronic or double-point ignition setups.\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 18-5275\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Marine Tune Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributor Type:\u003c\/strong\u003e Prestolite, Single Point, Screw Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Distributor Models:\u003c\/strong\u003e IBM-7011, IBM-7013\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine Configuration:\u003c\/strong\u003e 8-cylinder, 305, 350, 454 cubic inch engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal, Plastic, Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.54 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282259358\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1976-82, 8-cylinder, 305\/350\/454 cubic inch engines with IBM-7011 distributor\u003c\/li\u003e\n\u003cli\u003e1983-88, 8-cylinder, 305\/350\/454 cubic inch engines with IBM-7013 distributor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5275 Tune Up Kit include?\u003c\/strong\u003e The Sierra 18-5275 is a marine ignition tune up kit containing the contact point and related distributor service components needed to service a Prestolite single-point, screw-cap V-8 distributor in one kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of distributor does the 18-5275 kit fit?\u003c\/strong\u003e This kit is designed for Prestolite single-point distributors with a screw-on cap, specifically the IBM-7011 and IBM-7013 distributor models used on 8-cylinder 305, 350, and 454 cubic inch marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich model years is Sierra part 18-5275 designed for?\u003c\/strong\u003e The 18-5275 kit corresponds to the 1976-82 model years with the IBM-7011 distributor and the 1983-88 model years with the IBM-7013 distributor, both on 305\/350\/454 cubic inch 8-cylinder engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5275 kit work on a double-point or electronic distributor?\u003c\/strong\u003e No. The 18-5275 is matched specifically to a Prestolite single-point, screw-cap distributor design and is not intended for double-point or electronic ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat materials is the Sierra 18-5275 kit made from?\u003c\/strong\u003e The kit's components are made from a combination of metal, plastic, and rubber, matching the mix of materials found in the original distributor parts it services.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5275 Tune Up Kit weigh?\u003c\/strong\u003e The Sierra 18-5275 Marine Tune Up Kit weighs 0.54 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-5275 an OEM or aftermarket part?\u003c\/strong\u003e Sierra 18-5275 is an aftermarket marine part manufactured to meet or exceed the specifications of the original equipment components it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes Sierra back the 18-5275 kit with a warranty?\u003c\/strong\u003e Yes, the Sierra 18-5275 Tune Up Kit is covered under Sierra's standard customer satisfaction warranty that applies to its marine parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the screw cap and other cap styles for this distributor?\u003c\/strong\u003e The 18-5275 kit is built for the screw-on style distributor cap used on Prestolite single-point distributors, distinguishing it from clip-on or latch-style cap configurations on other distributor variants.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the contact points serviced by this kit?\u003c\/strong\u003e Contact points in a Prestolite single-point distributor should be serviced when an engine shows rough idling, hard starting, or ignition misfire, and the Sierra 18-5275 kit provides the parts needed for that service.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988204826843,"sku":"SIE-18-5275","price":49.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5275_lg__42486.1558129491.500.750.jpg?v=1785189122"},{"product_id":"sierra-18-5269-marine-ignition-tune-up-kit-for-gm-v-6-single-point-distributors-contact-set-condenser-rotor-distributor-cap-interchanges-glm-71710","title":"Sierra 18-5269 Ignition Tune-Up Kit, Replaces GLM 71710, for Prestolite 8 Cylinder Distributors","description":"\u003cp\u003eThe Sierra 18-5269 Ignition Tune-Up Kit is a complete breaker-point ignition service kit built for Prestolite 8 cylinder marine engine distributors. Rather than sourcing individual ignition wear parts separately, this kit bundles the four components most commonly replaced during a routine tune-up: a contact point set, a condenser, a rotor, and a distributor cap. Keeping these parts fresh helps maintain a strong, consistent spark, smoother idle, and reliable starting, since worn contact points and a failing condenser are among the most common causes of hard starting and misfires in point-type ignition systems.\u003c\/p\u003e\u003cp\u003eEach part in the kit is manufactured to meet or exceed the specifications of the original equipment part it replaces, giving boat owners and marine technicians a straightforward, single-part-number way to stock a full tune-up service instead of tracking down four separate components. The kit is intended for engines using a Prestolite 8 cylinder distributor and is commonly stocked for scheduled maintenance, pre-season service, or as a repair kit when a boat is experiencing ignition-related running issues.\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 18-5269\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282259341\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Tune-Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Prestolite 8 cyl.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.59 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Contact Set (18-5311), Condenser (18-5345), Rotor (18-5418), Distributor Cap (18-5386)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003ePrestolite 8 cyl. Distributor\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e34235 (Contact Set)\u003c\/li\u003e\n\u003cli\u003e33662 (Condenser)\u003c\/li\u003e\n\u003cli\u003e58217 (Rotor)\u003c\/li\u003e\n\u003cli\u003e33765 (Distributor Cap)\u003c\/li\u003e\n\u003cli\u003eGLM 71710\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engine does the Sierra 18-5269 tune-up kit fit?\u003c\/strong\u003e The Sierra 18-5269 is built for engines with a Prestolite 8 cylinder distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-5269 kit?\u003c\/strong\u003e This kit contains four parts: a contact set (18-5311), a condenser (18-5345), a rotor (18-5418), and a distributor cap (18-5386), covering the core wear items in a breaker-point ignition tune-up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5269 kit replace GLM 71710?\u003c\/strong\u003e Yes, the Sierra 18-5269 tune-up kit is interchangeable with GLM 71710.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this kit cross-reference?\u003c\/strong\u003e The individual components in the 18-5269 kit cross-reference to OEM numbers 34235 (contact set), 33662 (condenser), 58217 (rotor), and 33765 (distributor cap).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5269 tune-up kit weigh?\u003c\/strong\u003e The kit weighs 0.59 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine or aftermarket part?\u003c\/strong\u003e The Sierra 18-5269 is a Sierra-branded replacement kit, with each component manufactured to meet or exceed the specifications of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace the contact set and condenser?\u003c\/strong\u003e Worn contact points and a failing condenser are common causes of hard starting, rough idle, and misfires in point-type ignition systems, which is why the Sierra 18-5269 kit bundles both along with a new rotor and distributor cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I buy the rotor or distributor cap separately instead of the full kit?\u003c\/strong\u003e The Sierra 18-5269 is sold as a complete four-piece tune-up kit covering the contact set, condenser, rotor, and distributor cap for Prestolite 8 cylinder distributors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5269 kit compatible with single-point or dual-point distributors?\u003c\/strong\u003e The Sierra 18-5269 kit is designed for Prestolite 8 cylinder distributors using a contact point ignition system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between this kit and buying individual ignition parts?\u003c\/strong\u003e The Sierra 18-5269 bundles all four commonly replaced tune-up components, the contact set, condenser, rotor, and distributor cap, into a single part number instead of requiring four separate purchases.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988204859611,"sku":"SIE-18-5269","price":45.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5269_lg__87920.1558129164.500.750.jpg?v=1785188343"},{"product_id":"sierra-18-5277-marine-ignition-tune-up-kit-for-prestolite-v8-single-point-clip-cap-replaces-mallory-9-29316-and-indmar-755021","title":"Sierra 18-5277 Tune Up Kit for Prestolite V8 Single Point Distributors, 12 Volt System","description":"\u003cp\u003eThe Sierra 18-5277 Tune Up Kit is a complete distributor service kit built for Prestolite V8 single point ignition applications using a clip cap distributor. Designed for 12 volt systems only, this kit gives you every wear part needed to restore reliable spark on a Prestolite single point distributor in one purchase, rather than sourcing a contact set, condenser, cap, and rotor separately.\u003c\/p\u003e\u003cp\u003eInside the kit you get a Sierra 18-5303 contact set, a Sierra 18-5347 condenser, a Sierra 18-5369 distributor cap with gasket, and a Sierra 18-5407 rotor. Each component is engineered to meet or exceed the performance of the original equipment part it replaces, and the kit ships in a display package for easy identification at the point of sale or in a parts inventory. Because ignition tune-up parts are fit specific, confirm the part numbers above against your existing distributor components before ordering to ensure proper fit.\u003c\/p\u003e\u003cp\u003eThis kit is intended for inboard and stern drive marine engines running a Prestolite single point distributor with a clip-style cap, and is suitable for salt water use environments where corrosion resistance and reliable ignition performance matter most.\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 18-5277\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.77 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Voltage:\u003c\/strong\u003e 12 Volt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Application:\u003c\/strong\u003e Prestolite V8 Single Point Distributor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCap Type:\u003c\/strong\u003e Clip Cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Contact Set, Condenser, Distributor Cap with Gasket, Rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Set Part Number:\u003c\/strong\u003e 18-5303\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondenser Part Number:\u003c\/strong\u003e 18-5347\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributor Cap Part Number:\u003c\/strong\u003e 18-5369\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor Part Number:\u003c\/strong\u003e 18-5407\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits Prestolite V8 single point distributors with a clip cap on 12 volt marine engine systems.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCDI E66-0027\u003c\/li\u003e\n\u003cli\u003eGLM 71740\u003c\/li\u003e\n\u003cli\u003eIndmar 755021\u003c\/li\u003e\n\u003cli\u003eMallory 9-29316\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5277 tune up kit fit?\u003c\/strong\u003e The 18-5277 kit is designed for Prestolite V8 single point distributor applications with a clip cap, on 12 volt marine ignition systems only.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-5277 kit?\u003c\/strong\u003e This kit includes a Sierra 18-5303 contact set, a Sierra 18-5347 condenser, a Sierra 18-5369 distributor cap with gasket, and a Sierra 18-5407 rotor, giving you all four core distributor wear parts in one package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the distributor cap come with a gasket?\u003c\/strong\u003e Yes, the Sierra 18-5369 distributor cap included in the 18-5277 kit comes with a gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this kit compatible with 6 volt systems?\u003c\/strong\u003e No. The Sierra 18-5277 kit is built for 12 volt systems only and is not rated for 6 volt applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM parts does the 18-5277 kit cross-reference to?\u003c\/strong\u003e The 18-5277 kit is interchangeable with CDI E66-0027, GLM 71740, Indmar 755021, and Mallory 9-29316.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the tune up kit weigh?\u003c\/strong\u003e The Sierra 18-5277 Tune Up Kit weighs 0.77 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the distributor cap in this kit?\u003c\/strong\u003e The distributor cap in the 18-5277 kit is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I buy the contact set, condenser, cap, and rotor separately instead of the full kit?\u003c\/strong\u003e The 18-5277 kit bundles the Sierra 18-5303 contact set, 18-5347 condenser, 18-5369 cap, and 18-5407 rotor together, so you do not need to source each part individually for a Prestolite single point tune-up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5277 kit made for a clip cap or a screw-down cap distributor?\u003c\/strong\u003e It is designed for a clip cap distributor configuration on Prestolite V8 single point applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre Sierra parts equivalent to original equipment parts?\u003c\/strong\u003e Sierra products, including the 18-5277 tune up kit, are engineered to meet or exceed the performance of the original equipment part they replace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5277 kit suitable for salt water use?\u003c\/strong\u003e Yes, this kit is suitable for salt water use environments.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if the 18-5277 kit is the right fit for my distributor?\u003c\/strong\u003e Because tune-up components are fit specific, check the individual part numbers in the 18-5277 kit (18-5303 contact set, 18-5347 condenser, 18-5369 cap, 18-5407 rotor) against your existing distributor parts before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988204990683,"sku":"SIE-18-5277","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5277__36834.1722511941.500.750.jpg?v=1785188972"},{"product_id":"sierra-18-5278-tune-up-kit-for-mercruiser-crusader-v-6-delco-est-ignition-replaces-mercruiser-850484t3-includes-distributor-cap-rotor","title":"Sierra 18-5278 V-6 Delco EST Ignition Tune-Up Kit, Replaces Mercruiser 850484T3","description":"\u003cp\u003eThe Sierra 18-5278 is an ignition tune-up kit engineered for V-6 engines equipped with a Delco EST ignition system. Tune-up kits like this one are used to restore reliable spark delivery during routine engine maintenance, replacing worn distributor components that can cause misfires, hard starting, or rough idle over time. The kit includes a distributor cap (18-5362) and rotor (18-5408), finished in white, giving the buyer the two core wear items needed for a complete distributor cap-and-rotor service in one package. Each Sierra product is built to meet or exceed the performance of the original equipment part it replaces, making this kit a straightforward drop-in service solution rather than a partial fix requiring separate part sourcing. Because ignition components are fit-specific, buyers should confirm part numbers against their engine before ordering to ensure proper fit. This kit is cross-referenced to multiple OEM and aftermarket part numbers, so it can be located under several different catalog listings depending on the engine manufacturer's documentation a buyer is working from.\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 18-5278\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Configuration:\u003c\/strong\u003e V-6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition System:\u003c\/strong\u003e Delco EST\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Distributor Cap (18-5362), Rotor (18-5408)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282105075\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.52 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e GLM 71820, Mallory 9-29321, Mercruiser 850484T3, Mercruiser 850484T1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFor V-6 engines equipped with a Delco EST ignition system.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 71820\u003c\/li\u003e\n\u003cli\u003eMallory 9-29321\u003c\/li\u003e\n\u003cli\u003eMercruiser 850484T3\u003c\/li\u003e\n\u003cli\u003eMercruiser 850484T1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5278 tune-up kit fit?\u003c\/strong\u003e The 18-5278 is designed for V-6 engines running a Delco EST ignition system. Because ignition parts are fit-specific, confirm your engine's ignition system type against the part number before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-5278 kit?\u003c\/strong\u003e This kit contains a distributor cap (Sierra 18-5362) and a rotor (Sierra 18-5408), giving you both core wear components needed for a distributor cap-and-rotor service in one package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5278 the same as Mercruiser 850484T3?\u003c\/strong\u003e Yes, the 18-5278 cross-references to Mercruiser 850484T3 and 850484T1, as well as GLM 71820 and Mallory 9-29321, so it can be ordered as a direct equivalent under any of those part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the distributor cap in this kit?\u003c\/strong\u003e The distributor cap and rotor included in the Sierra 18-5278 tune-up kit are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5278 tune-up kit weigh?\u003c\/strong\u003e The Sierra 18-5278 ignition tune-up kit weighs 0.52 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5278 meet OEM specifications?\u003c\/strong\u003e Sierra states that this product meets or exceeds the performance of the original equipment part it replaces, making it a direct service replacement rather than a generic substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-5278 genuine Sierra or a generic aftermarket part?\u003c\/strong\u003e The 18-5278 is a genuine Sierra-branded tune-up kit, manufactured to meet or exceed the original equipment component it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between 18-5278 and other Sierra tune-up kits like 18-5280 or 18-5281?\u003c\/strong\u003e The 18-5278 is built specifically for V-6 Delco EST ignition systems, while 18-5280 covers In-Line 4 Delco EST engines and 18-5281 covers V-8 Delco EST engines. Matching the correct kit to your engine's cylinder configuration and ignition system is essential.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-5278 kit if my engine has a Prestolite Electronic ignition instead of Delco EST?\u003c\/strong\u003e No, the 18-5278 is built for Delco EST ignition systems on V-6 engines; a V-8 Prestolite Electronic engine would require a different kit (18-5279), since ignition components are not interchangeable across ignition system types.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers can I search to find the 18-5278 kit?\u003c\/strong\u003e The 18-5278 kit cross-references to GLM 71820, Mallory 9-29321, Mercruiser 850484T3, and Mercruiser 850484T1.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988205285595,"sku":"SIE-18-5278","price":36.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5278__59619.1737889952.500.750.jpg?v=1785188318"},{"product_id":"sierra-18-5279-tune-up-kit-for-prestolite-electronic-v-8-marine-ignition-distributor-cap-rotor-interchanges-cdi-e66-0029","title":"Sierra 18-5279 Tune Up Kit for Prestolite Electronic V-8 Marine Engines","description":"\u003cp\u003eThe Sierra 18-5279 Tune Up Kit is a complete ignition refresh kit built for marine V-8 engines equipped with a Prestolite Electronic ignition system. Restoring reliable spark delivery starts with a fresh distributor cap and rotor, and this kit supplies both in one package: a Sierra 18-5352 Distributor Cap and a Sierra 18-5403 Rotor, matched specifically to Prestolite Electronic V-8 ignition setups. Worn or corroded caps and rotors are a common source of hard starting, misfires, and rough idle in marine engines, and replacing them together as a matched set helps ensure consistent electrical contact and even spark distribution across all cylinders.\u003c\/p\u003e\u003cp\u003eEach component in the kit meets or exceeds the performance of the original equipment part it replaces, giving boat owners and marine technicians a straightforward, fit-specific way to service the ignition system without mixing mismatched parts from different suppliers. Because ignition components vary by engine configuration, this kit is built specifically for Prestolite Electronic V-8 applications; buyers should confirm their engine's ignition type 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 18-5279\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Prestolite Electronic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Configuration:\u003c\/strong\u003e V-8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e 1 Distributor Cap (Sierra 18-5352), 1 Rotor (Sierra 18-5403)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 3 x 6 x 8.13 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.45 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282105082\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eV-8 marine engines equipped with Prestolite Electronic ignition systems\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eCDI E66-0029\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5279 Tune Up Kit fit?\u003c\/strong\u003e The Sierra 18-5279 Tune Up Kit is designed for marine V-8 engines equipped with a Prestolite Electronic ignition system. It is fit specific, so confirming your engine's ignition type before ordering is recommended.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-5279 Tune Up Kit?\u003c\/strong\u003e The kit contains one Sierra 18-5352 Distributor Cap and one Sierra 18-5403 Rotor, both matched to Prestolite Electronic V-8 ignition applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5279 kit include spark plugs or ignition wires?\u003c\/strong\u003e No. The Sierra 18-5279 Tune Up Kit includes only a distributor cap and rotor; spark plugs and ignition wires are not part of this kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5279 kit interchangeable with any other part numbers?\u003c\/strong\u003e Yes, the Sierra 18-5279 Tune Up Kit is interchangeable with CDI E66-0029.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5279 Tune Up Kit weigh?\u003c\/strong\u003e The Sierra 18-5279 Tune Up Kit weighs 0.45 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-5279 Tune Up Kit?\u003c\/strong\u003e The kit measures 3 x 6 x 8.13 inches as packaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit work with a Delco EST ignition system?\u003c\/strong\u003e No. The 18-5279 kit is built for Prestolite Electronic V-8 ignition systems, not Delco EST systems, which use different Sierra part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the distributor cap in the 18-5279 kit compatible with in-line 4-cylinder Mallory single point systems?\u003c\/strong\u003e No, the Sierra 18-5279 Tune Up Kit is specific to Prestolite Electronic V-8 applications and is not designed for in-line 4-cylinder Mallory single point ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre the parts in the Sierra 18-5279 kit genuine Sierra components?\u003c\/strong\u003e Yes, both the distributor cap (18-5352) and rotor (18-5403) included in the 18-5279 kit are genuine Sierra parts engineered to meet or exceed the original equipment they replace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace the distributor cap and rotor together instead of separately?\u003c\/strong\u003e Replacing the distributor cap and rotor together, as provided in the Sierra 18-5279 kit, helps ensure consistent electrical contact and even spark distribution, since a worn part on either side can undermine the benefit of replacing just one.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988205318363,"sku":"SIE-18-5279","price":41.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5279_lg__12681.1558129695.500.750.jpg?v=1785188887"},{"product_id":"marine-ignition-tune-up-kit-for-mercury-thunderbolt-hei-v-6-distributor-cap-and-rotor-replaces-oe-815407a2-13524a6-sierra-18-5274","title":"Sierra 18-5274 Ignition Tune-Up Kit, Replaces GLM 71790, for MerCruiser 4.3L\/LH\/LX\/LXH V6 Alpha\/Bravo Gen+","description":"\u003cp\u003eThe Sierra 18-5274 Ignition Tune-Up Kit supplies the core ignition components needed to service MerCruiser 4.3L V-6 sterndrive and inboard engines. The kit contains a rotor assembly (Sierra 18-5432) and a distributor cap (Sierra 18-5396), the two parts most commonly worn or fouled during regular ignition maintenance on these engines. Sierra engineers each component to meet or exceed the specifications of the original equipment part it replaces, so the kit restores factory-correct ignition timing and spark distribution without modification to the distributor housing.\u003c\/p\u003e\u003cp\u003eThis kit is built for MerCruiser 4.3L\/LH\/LX\/LXH 262 cid V-6 engines fitted with Alpha One Gen+ or Bravo Gen+ drives, as well as the earlier 205 and 4.3LX (4bbl) engine models. It ships in a labeled display package for easy identification at the point of sale or in a parts inventory. Replacing the rotor and cap together at the same service interval helps prevent cross-firing, hard starting, and misfires caused by a worn distributor cap or a pitted rotor tip.\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 18-5274\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Tune-Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Rotor Assembly (18-5432), Distributor Cap (18-5396)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces:\u003c\/strong\u003e GLM 71790, Mallory 9-29317\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine:\u003c\/strong\u003e MerCruiser 4.3L\/LH\/LX\/LXH 262 cid V-6 (Alpha Gen+ and Bravo Gen+), serial numbers F803000 and up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso Fits:\u003c\/strong\u003e MerCruiser 205, 4.3LX (4bbl) 262 cid V-6, serial numbers A331455-F802999\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.68 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 5 x 6 x 9 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Display package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282234324\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 4.3L\/LH\/LX\/LXH V6, Alpha Gen+, 1996-2001, serial numbers F803000 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3L\/LH\/LX\/LXH V6, Bravo Gen+, 1996-2001, serial numbers F803000 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003eMerCruiser 205, 4.3LX (4bbl), 262 cid V-6, serial numbers A331455-F802999\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 71790\u003c\/li\u003e\n\u003cli\u003eMallory 9-29317\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5274 tune-up kit include?\u003c\/strong\u003e The Sierra 18-5274 kit includes a rotor assembly (Sierra 18-5432) and a distributor cap (Sierra 18-5396), the two components most often replaced during ignition service on MerCruiser 4.3L V-6 engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich MerCruiser engines does the 18-5274 kit fit?\u003c\/strong\u003e This kit fits MerCruiser 4.3L\/LH\/LX\/LXH 262 cid V-6 engines with Alpha Gen+ or Bravo Gen+ drives (serial numbers F803000 and up), as well as the earlier 205 and 4.3LX (4bbl) V-6 models (serial numbers A331455-F802999).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5274 kit a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-5274 is a Sierra aftermarket kit engineered to meet or exceed the original equipment part it replaces; it is not a Mercury Marine branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM or aftermarket numbers does 18-5274 cross-reference to?\u003c\/strong\u003e Sierra 18-5274 is interchangeable with GLM 71790 and Mallory 9-29317, so any of those part numbers should point a buyer to the same kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the tune-up kit weigh?\u003c\/strong\u003e The Sierra 18-5274 tune-up kit weighs 0.68 pounds as packaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-5274 kit?\u003c\/strong\u003e The kit ships in a display package measuring 5 x 6 x 9 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5274 kit include spark plugs or spark plug wires?\u003c\/strong\u003e No. The kit contains only the rotor assembly (18-5432) and distributor cap (18-5396); spark plugs and plug wire sets are sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this kit be used on both Alpha and Bravo drive configurations?\u003c\/strong\u003e Yes, the Sierra 18-5274 kit is listed for both Alpha Gen+ and Bravo Gen+ MerCruiser 4.3L V6 engines with serial numbers F803000 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my engine's serial number falls in the covered range?\u003c\/strong\u003e Check your MerCruiser engine's serial number tag: the 18-5274 kit covers serial numbers F803000 and up for the 4.3L\/LH\/LX\/LXH V6 Alpha\/Bravo Gen+ engines, or A331455-F802999 for the earlier 205 and 4.3LX (4bbl) models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace the rotor and distributor cap together?\u003c\/strong\u003e Servicing the rotor (18-5432) and distributor cap (18-5396) together, as bundled in the Sierra 18-5274 kit, prevents mismatched wear between the two parts from causing misfires or cross-firing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5274 kit backed by a warranty?\u003c\/strong\u003e Sierra parts, including the 18-5274 tune-up kit, are covered by Sierra's Customer Satisfaction Warranty against defects in workmanship and materials for the useful life of the product.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988205678811,"sku":"SIE-18-5274","price":36.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5274_lg__70885.1558129439.500.750.jpg?v=1785189006"},{"product_id":"sierra-18-5280-marine-tune-up-kit-distributor-cap-and-rotor-for-crusader-v-8-prestolite-electronic-ignition-oe-392-9766-392-9089","title":"Sierra 18-5280 In-Line 4 Delco EST Ignition Tune-Up Kit, Replaces Mercruiser 811635Q1","description":"\u003cp\u003eThe Sierra 18-5280 Tune Up Kit is an ignition tune-up kit designed for in-line 4 Delco EST applications. It is built to work with the Sierra 18-5475 Delco HEI distributor used on GM 4 cylinder engines, making it a straightforward way to freshen up the ignition system on a compatible in-line 4 Delco EST setup. The kit bundles the two components most commonly worn out in an ignition tune-up: a distributor cap and a rotor, so both parts are replaced together for even wear and reliable spark delivery going forward.\u003c\/p\u003e\u003cp\u003eInside the kit you will find a Sierra 18-5361 distributor cap and a Sierra 18-5406 rotor, both manufactured to meet or exceed the performance of the original equipment parts they replace. The distributor cap and rotor are finished with a machined exterior for a precise fit against the distributor housing and points\/contacts. This kit is intended as a direct interchange for a number of OEM and aftermarket part numbers, so it can be used as a like-for-like replacement without modification on applications that call for those numbers.\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 18-5280\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Tune-Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Application:\u003c\/strong\u003e In-Line 4 Delco EST\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Distributor:\u003c\/strong\u003e Sierra 18-5475 Delco HEI Distributor (GM 4 Cylinder)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Includes:\u003c\/strong\u003e Sierra 18-5361 Distributor Cap, Sierra 18-5406 Rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.47 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 5.6 x 4.9 x 3.7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282105099\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for in-line 4 Delco EST ignition applications, including use with the Sierra 18-5475 Delco HEI distributor (GM 4 cylinder).\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCDI E66-0003\u003c\/li\u003e\n\u003cli\u003eGLM 71830\u003c\/li\u003e\n\u003cli\u003eMallory 9-29320\u003c\/li\u003e\n\u003cli\u003eMercruiser 811635Q1\u003c\/li\u003e\n\u003cli\u003eMercruiser 811635Q2\u003c\/li\u003e\n\u003cli\u003eMercruiser 811635T2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5280 Tune Up Kit include?\u003c\/strong\u003e The Sierra 18-5280 kit includes one Sierra 18-5361 distributor cap and one Sierra 18-5406 rotor, giving you both ignition components needed for a tune-up in a single kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the 18-5280 tune-up kit designed for?\u003c\/strong\u003e It is designed for in-line 4 Delco EST ignition applications, and it can be used with the Sierra 18-5475 Delco HEI distributor on GM 4 cylinder engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5280 a genuine Sierra part or aftermarket?\u003c\/strong\u003e 18-5280 is a genuine Sierra part number, and the distributor cap and rotor it contains (18-5361 and 18-5406) are also Sierra components, built to meet or exceed the original equipment parts they replace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM and aftermarket numbers does the 18-5280 kit cross-reference to?\u003c\/strong\u003e The Sierra 18-5280 is interchangeable with CDI E66-0003, GLM 71830, Mallory 9-29320, and Mercruiser 811635Q1, 811635Q2, and 811635T2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5280 tune-up kit weigh?\u003c\/strong\u003e The kit weighs 0.47 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-5280 kit as packaged?\u003c\/strong\u003e The product measures 5.6 x 4.9 x 3.7 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this kit be used with a Mercruiser stern drive calling for part 811635Q2?\u003c\/strong\u003e Yes, the Sierra 18-5280 kit is a direct interchange for Mercruiser stern drive part numbers 811635Q1, 811635Q2, and 811635T2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5280 kit work with the Sierra 18-5475 distributor?\u003c\/strong\u003e Yes, the 18-5280 tune-up kit is designed to be used with the Sierra 18-5475 Delco HEI distributor for GM 4 cylinder applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish is used on the distributor cap and rotor in this kit?\u003c\/strong\u003e The components in the Sierra 18-5280 kit have a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace the distributor cap and rotor together instead of separately?\u003c\/strong\u003e The Sierra 18-5280 bundles the 18-5361 distributor cap and 18-5406 rotor so both wear-prone ignition parts are refreshed together, helping maintain even ignition performance rather than replacing just one worn component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5280 a fit-specific kit or a universal kit?\u003c\/strong\u003e It is fit specific to in-line 4 Delco EST ignition applications, so the part numbers should be checked against the application before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988205711579,"sku":"SIE-18-5280","price":19.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5280__64638.1722367723.500.750.jpg?v=1785188916"},{"product_id":"sierra-18-5283-marine-tune-up-kit-for-mallory-single-point-in-line-4-distributors-contact-points-ignition-service-kit","title":"Sierra 18-5283 Ignition Tune-Up Kit for In-Line 4 Mallory Single Point Marine Engines","description":"\u003cp\u003eThe Sierra 18-5283 is an ignition tune-up kit built for In-Line 4 marine engines equipped with a Mallory Single Point ignition system. It is designed to bring aging or worn ignition components back to factory-correct performance, addressing the hard starting, rough idle, and misfiring that come from deteriorated points, condensers, and related ignition parts. Sierra engineers its tune-up kits to meet or exceed the specifications of the original equipment they replace, and the company supplies parts to OEM engine manufacturers and boat builders, so the components in this kit are built to the same standard used in factory production.\u003c\/p\u003e\u003cp\u003eThis kit is intended for boaters and marine technicians performing routine ignition maintenance or restoring reliable starting and running on an In-Line 4 engine fitted with a Mallory Single Point distributor. Because the ignition system is exposed to a harsh marine environment of moisture, vibration, and temperature swings, using components engineered specifically for that environment helps ensure a longer service life than automotive-grade parts. The kit ships as a single, complete unit so the correct matched components are on hand for the job rather than sourcing individual pieces separately.\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 18-5283\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Tune-Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e In-Line 4 marine engines with Mallory Single Point ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 3 x 6 x 8.13 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.52 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Pieces:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282105129\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits In-Line 4 marine engines equipped with a Mallory Single Point ignition system.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5283 tune-up kit fit?\u003c\/strong\u003e It is built for In-Line 4 marine engines that use a Mallory Single Point ignition system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit work with a distributor other than Mallory Single Point?\u003c\/strong\u003e No, the Sierra 18-5283 is matched specifically to the Mallory Single Point ignition setup on In-Line 4 engines and is not designed for other distributor types.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5283 a complete tune-up kit or individual parts?\u003c\/strong\u003e It is sold as a single complete tune-up kit rather than as separate individual components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5283 tune-up kit weigh?\u003c\/strong\u003e The kit weighs 0.52 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-5283 kit?\u003c\/strong\u003e The item measures 3 x 6 x 8.13 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-5283 kit made from?\u003c\/strong\u003e The kit's components are made from plastic.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-5283 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e Sierra 18-5283 is an aftermarket tune-up kit engineered to meet or exceed the original equipment specifications for the ignition system it services.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy should I replace ignition tune-up components on my marine engine?\u003c\/strong\u003e Worn points, condensers, and related ignition parts on an In-Line 4 engine can cause hard starting, rough idle, and misfiring, and the 18-5283 kit is designed to restore correct ignition performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many pieces come in the Sierra 18-5283 kit?\u003c\/strong\u003e The kit ships as one unit (Number of Pieces: 1) containing the matched tune-up components for the In-Line 4 Mallory Single Point ignition system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes Sierra make ignition kits for other engine and ignition combinations besides the 18-5283?\u003c\/strong\u003e Yes, Sierra offers separate part numbers for other ignition configurations, such as V-6 and V-8 Delco EST systems and V-8 Prestolite Electronic ignition, but the 18-5283 is specifically the In-Line 4 Mallory Single Point kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5283 suitable for the harsh marine environment?\u003c\/strong\u003e Yes, Sierra engineers its ignition tune-up kits, including the 18-5283, to hold up in the marine environment rather than using automotive-only grade components.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988205744347,"sku":"SIE-18-5283","price":73.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5283_lg__13164.1558129905.500.750.jpg?v=1785189182"},{"product_id":"sierra-18-5281-tune-up-kit-delco-est-v-8-distributor-cap-and-rotor-interchanges-mercruiser-808483q2-fits-1996-2005-indmar-monsoon-mcx-rpt-hammerhead","title":"Sierra 18-5281 Tune-Up Kit - GM V-8 Distributor Cap and Rotor, Fits 1996-2005 Indmar Monsoon, MCX, RPT, Hammerhead","description":"\u003cp\u003eThe Sierra 18-5281 Tune-Up Kit is a distributor cap and rotor set built as a direct replacement for GM V-8 Delco EST marine ignition systems. The kit contains a Sierra 18-5354 distributor cap and an 18-5405 rotor, giving boat owners the two most common ignition wear parts in a single package for a routine tune-up or ignition service. Replacing the cap and rotor together helps restore reliable spark delivery, smoother idle, and consistent starting on engines where these components have worn, cracked, or corroded from heat cycling and moisture exposure typical of a marine engine compartment.\u003c\/p\u003e\u003cp\u003eKit 18-5281 is interchangeable with GLM 71810, Mallory 9-29308, and Mercruiser 808483Q2, so it can be cross-referenced against those part numbers when sourcing a replacement. It fits 1996-2005 Indmar Monsoon, MCX, RPT, and Hammerhead 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 18-5281\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Distributor cap (18-5354), rotor (18-5405)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e GM V-8 Delco EST ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Multi-colored\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.61 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282105105\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1996-2005 Indmar Monsoon, MCX, RPT, and Hammerhead engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 71810\u003c\/li\u003e\n\u003cli\u003eMallory 9-29308\u003c\/li\u003e\n\u003cli\u003eMercruiser 808483Q2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-5281 Tune-Up Kit?\u003c\/strong\u003e The kit contains a Sierra 18-5354 distributor cap and an 18-5405 rotor, the two parts needed for a distributor cap and rotor tune-up on covered GM V-8 marine ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the 18-5281 Tune-Up Kit fit?\u003c\/strong\u003e It fits 1996-2005 Indmar Monsoon, MCX, RPT, and Hammerhead engines equipped with a GM V-8 Delco EST ignition system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5281 kit interchangeable with other brands' part numbers?\u003c\/strong\u003e Yes, Sierra 18-5281 is interchangeable with GLM 71810, Mallory 9-29308, and Mercruiser 808483Q2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5281 kit include spark plugs or plug wires?\u003c\/strong\u003e No, the kit is limited to the distributor cap (18-5354) and rotor (18-5405); it does not include spark plugs or ignition wires.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5281 Tune-Up Kit weigh?\u003c\/strong\u003e The complete kit weighs 0.61 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5281 Tune-Up Kit?\u003c\/strong\u003e The UPC for Sierra Tune-Up Kit 18-5281 is 808282105105.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I order just the cap or just the rotor separately?\u003c\/strong\u003e The 18-5281 listing is sold as a combined kit containing both the 18-5354 cap and 18-5405 rotor rather than as individual components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5281 kit work on any GM V-8 marine engine?\u003c\/strong\u003e It is built for GM V-8 Delco EST ignition systems and is confirmed to fit 1996-2005 Indmar Monsoon, MCX, RPT, and Hammerhead engines; compatibility outside those applications should be checked against your engine's existing distributor cap and rotor part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace the distributor cap and rotor together?\u003c\/strong\u003e Cap and rotor wear at a similar rate from heat and electrical arcing, so the Sierra 18-5281 kit pairs both parts to restore consistent spark timing and avoid mismatched wear between old and new components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-5281 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-5281 is a Sierra-branded Tune-Up Kit manufactured under the Sierra part number 18-5281.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988205777115,"sku":"SIE-18-5281","price":43.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5281__39865.1737825615.500.750.jpg?v=1785188097"},{"product_id":"sierra-18-5284-marine-tune-up-kit-for-bosch-4-cylinder-distributors-volvo-penta-contact-set-condenser-rotor-replaces-oem-241664-243460-243799-1306169","title":"Sierra 18-5284 Tune-Up Kit for Flame Thrower Distributors 18-5477, 18-5478, 18-5479, 18-5481, 18-5482, 18-5483","description":"\u003cp\u003eThe Sierra 18-5284 Tune-Up Kit is a complete ignition service kit built for Flame Thrower distributors, supplying the three wear parts that most commonly need replacement during a routine tune-up: a contact set, a condenser, and a rotor. Rather than sourcing each component separately, this kit bundles all three into one part number, simplifying maintenance for boat owners and marine technicians servicing Bosch 4 cylinder ignition systems.\u003c\/p\u003e\u003cp\u003eThe contact set (18-5305) handles the make-and-break switching that fires the ignition coil, the condenser (18-5349) suppresses arcing across the points to protect them from premature wear, and the rotor (18-5428) directs high voltage from the coil to the correct spark plug wire terminal inside the distributor cap. All three parts are engineered to match or exceed the performance of the original equipment components they replace, restoring smooth, reliable ignition timing and helping prevent misfires, hard starting, and rough idle caused by worn points, a failing condenser, or a pitted rotor.\u003c\/p\u003e\u003cp\u003eThis kit is designed to fit Flame Thrower distributors 18-5481, 18-5482, 18-5483, 18-5477, 18-5478, and 18-5479, making it a straightforward match for boats already equipped with one of these distributors. The components are finished in white plastic housings for the rotor and contact assembly, keeping the parts easy to identify during installation.\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 18-5284\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Tune Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Application:\u003c\/strong\u003e Bosch 4 cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Contact Set (18-5305), Condenser (18-5349), Rotor (18-5428)\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 Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Material:\u003c\/strong\u003e Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.13 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282105822\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eFlame Thrower Distributors: 18-5481, 18-5482, 18-5483, 18-5477, 18-5478, 18-5479\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e243799 (contact set)\u003c\/li\u003e\n\u003cli\u003e1306169 (contact set)\u003c\/li\u003e\n\u003cli\u003e243460 (contact set)\u003c\/li\u003e\n\u003cli\u003e841262 (condenser)\u003c\/li\u003e\n\u003cli\u003e243903 (rotor)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-5284 Tune-Up Kit?\u003c\/strong\u003e The kit contains three components: an 18-5305 contact set, an 18-5349 condenser, and an 18-5428 rotor, covering the main wear parts needed for a distributor tune-up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich distributors does the 18-5284 kit fit?\u003c\/strong\u003e It is designed to fit Flame Thrower distributors 18-5481, 18-5482, 18-5483, 18-5477, 18-5478, and 18-5479.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this kit replace?\u003c\/strong\u003e The 18-5284 kit's contact set replaces OEM numbers 243799, 1306169, and 243460, the condenser replaces OEM number 841262, and the rotor replaces OEM number 243903.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5284 kit compatible with 4 cylinder Bosch ignition systems?\u003c\/strong\u003e Yes, this tune-up kit is built for Bosch 4 cylinder engine applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5284 Tune-Up Kit weigh?\u003c\/strong\u003e The complete kit weighs 0.13 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the components in the 18-5284 kit?\u003c\/strong\u003e The rotor and related plastic components in this kit are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the rotor made from?\u003c\/strong\u003e The rotor housing is made from plastic, with copper used for the contact material in the contact set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to replace all three parts in the kit at once?\u003c\/strong\u003e The 18-5284 kit is sold as a complete set with the contact set, condenser, and rotor bundled together for a full distributor service, rather than as individually purchasable pieces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-5284 meet original equipment performance standards?\u003c\/strong\u003e Sierra states this tune-up kit's components meet or exceed the performance of the original equipment parts they replace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-5284 kit for a routine ignition tune-up?\u003c\/strong\u003e Yes, this kit is intended for routine maintenance, supplying fresh points, condenser, and rotor to restore reliable ignition performance in Flame Thrower distributors.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988205842651,"sku":"SIE-18-5284","price":40.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5284_lg__54323.1558126907.500.750.jpg?v=1785188317"},{"product_id":"sierra-18-5292-electronic-ignition-conversion-kit-for-volvo-penta-i4-engines-with-bosch-231178017-distributor","title":"Sierra Electronic Conversion Kit 18-5292 for Prestolite V-8 Distributors with Snap Down Cap","description":"\u003cp\u003eThe Sierra 18-5292 Electronic Conversion Kit converts most Prestolite V-8 distributors equipped with a snap down cap over to electronic ignition, replacing the original breaker-point setup with a more reliable electronic triggering system. Point-style ignitions require periodic adjustment and are prone to wear at the contact points, so this conversion kit is a common upgrade for boat owners looking to reduce maintenance and improve ignition consistency on Prestolite V-8 distributor applications. The kit is designed as a direct fit for the snap down cap style Prestolite distributor housing, so no distributor housing modification is required during installation.\u003c\/p\u003e\u003cp\u003eSierra engineers this conversion kit to meet or exceed the performance of the original equipment component it upgrades, and it is built to withstand the demands of the marine environment. As with all Sierra parts, it is backed by Sierra's warranty covering defects in workmanship and materials for the useful life of the product.\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 18-5292\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Electronic Conversion Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282225667\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMost Prestolite V-8 distributors with snap down cap\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5292 Electronic Conversion Kit fit?\u003c\/strong\u003e The Sierra 18-5292 fits most Prestolite V-8 distributors that use a snap down cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this kit do?\u003c\/strong\u003e It converts a Prestolite V-8 distributor with a snap down cap from a breaker-point ignition to an electronic ignition system, part number 18-5292 from Sierra.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5292 kit weigh?\u003c\/strong\u003e 0.15 pounds, per Sierra's published specification for the 18-5292 Electronic Conversion Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-5292 kit?\u003c\/strong\u003e The kit is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-5292 is a genuine Sierra part, manufactured under Sierra's own part number and backed by Sierra's warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this work on a distributor without a snap down cap?\u003c\/strong\u003e No. The Sierra 18-5292 is designed specifically for Prestolite V-8 distributors with a snap down cap; distributors with a different cap style are not covered by this kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes installing the 18-5292 require modifying the distributor housing?\u003c\/strong\u003e No modification to the distributor housing is required since the kit is built to fit the snap down cap style Prestolite housing directly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the warranty on the Sierra 18-5292?\u003c\/strong\u003e Sierra warrants the 18-5292 Electronic Conversion Kit to be free of defects in workmanship and materials for the useful life of the product, with repair or replacement provided if it fails to meet that warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy upgrade to an electronic conversion kit instead of keeping points?\u003c\/strong\u003e Breaker-point ignitions need periodic adjustment and wear at the contact points over time; the 18-5292 electronic conversion kit removes that maintenance point by replacing the points-based triggering with an electronic system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5292 designed for marine use?\u003c\/strong\u003e Yes, it is engineered by Sierra to withstand the marine environment while meeting or exceeding the performance of the original ignition component it replaces.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988208398555,"sku":"SIE-18-5292","price":200.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5292_lg__76233.1558127413.500.750.jpg?v=1785188893"},{"product_id":"sierra-18-5294-electronic-ignition-conversion-kit-for-mercruiser-v6-with-delco-distributor-interchanges-mallory-9-26901","title":"Sierra 18-5294 Electronic Conversion Kit for 6 Cylinder Delco Distributors","description":"\u003cp\u003eThe Sierra 18-5294 Electronic Conversion Kit converts a 6 cylinder Delco distributor from breaker points and a condenser to true solid-state electronic ignition. Removing the points and condenser eliminates the wear-prone contact surfaces that cause misfires and require periodic gap adjustment, replacing them with an electronic trigger that fires consistently across the RPM range. The kit is designed as a one-piece unit with a simple two-wire hookup, so it installs into the existing distributor housing without modifying the ignition system beyond the points and condenser it replaces. It continues to use a standard coil, cap, and rotor, meaning the rest of the ignition system stays as-is.\u003c\/p\u003e\u003cp\u003eTiming precision is held to within 1\/4 degree across a 0 to 6000 RPM range, giving a stable spark advance curve from idle through high RPM. The kit is also built to work alongside Sierra's Flame Thrower coils 18-5466 and 18-5469 for owners looking to pair the conversion with an upgraded coil. It is intended for 6 cylinder Delco distributor applications only; other Sierra conversion kits are sold separately for different distributor types and cylinder counts, so confirm the distributor style 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 18-5294\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 6 Cylinder Delco Distributors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistance:\u003c\/strong\u003e 3.0 Ohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming Accuracy:\u003c\/strong\u003e Within 1\/4 degree from 0 to 6000 RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e One-piece, two-wire hookup\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Accessories:\u003c\/strong\u003e Flame Thrower 18-5466 and 18-5469\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined\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\u003eWeight:\u003c\/strong\u003e 0.34 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999976635\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e6 Cylinder Delco Distributors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 72570\u003c\/li\u003e\n\u003cli\u003eMallory 9-26901\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat distributors does the Sierra 18-5294 fit?\u003c\/strong\u003e The Sierra 18-5294 Electronic Conversion Kit is designed for 6 cylinder Delco distributors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5294 replace points and a condenser?\u003c\/strong\u003e Yes, the 18-5294 replaces the points and condenser in a 6 cylinder Delco distributor with a true solid-state electronic trigger.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a new coil, cap, or rotor with this kit?\u003c\/strong\u003e No, the 18-5294 uses your standard coil, cap, and rotor, so those components do not need to be replaced during installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow accurate is the timing after installing the 18-5294?\u003c\/strong\u003e Timing accuracy is held to within 1\/4 degree across a 0 to 6000 RPM range once the 18-5294 is installed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the electrical resistance of the 18-5294?\u003c\/strong\u003e The Sierra 18-5294 has a resistance of 3.0 Ohms.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5294 hard to install?\u003c\/strong\u003e It is a one-piece unit with a two-wire hookup, which Sierra designed for straightforward installation in place of the existing points and condenser.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions and weight of the 18-5294?\u003c\/strong\u003e The Sierra 18-5294 kit measures 0.39 x 0.39 x 0.39 inches and weighs 0.34 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre there other part numbers that cross to the 18-5294?\u003c\/strong\u003e The Sierra 18-5294 is interchangeable with GLM 72570 and Mallory 9-26901.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-5294 be paired with an upgraded coil?\u003c\/strong\u003e Yes, the 18-5294 can be used with Sierra's Flame Thrower coils 18-5466 and 18-5469.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the 18-5294 housing have?\u003c\/strong\u003e The 18-5294 has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5294 fit a 4 cylinder distributor?\u003c\/strong\u003e No, the 18-5294 is built specifically for 6 cylinder Delco distributors, not 4 cylinder applications.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988208431323,"sku":"SIE-18-5294","price":200.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5294_lg__22600.1558127559.500.750.jpg?v=1785189182"},{"product_id":"sierra-18-5296-2-electronic-ignition-conversion-kit-for-mallory-yl-yd-8-cylinder-distributors-fits-crusader-185-220-230-305-v8","title":"Sierra Electronic Conversion Kit 18-5296-2 for Mallory YL \u0026 YD 8 Cylinder Distributors","description":"\u003cp\u003eThe Sierra 18-5296-2 Electronic Conversion Kit converts a points-and-condenser ignition system to true solid state ignition on most Mallory YL and YD 8 cylinder distributors, including units with either clockwise or counter clockwise rotation. By replacing the points and condenser with a solid state trigger module, it delivers a more consistent spark and holds timing accuracy to within 1\/4 degree across a 0 to 6000 RPM range, which means smoother starts and steadier running compared to a mechanical points setup that wears and drifts out of adjustment over time.\u003c\/p\u003e\u003cp\u003eThe kit is built as a one-piece unit with a simple 2-wire hook-up, so it installs into the existing distributor housing without extensive modification, and it works with your standard coil, cap, and rotor rather than requiring a full ignition system swap. For engines that also need a coil upgrade, this kit can be paired with Sierra's Flame Thrower Coils 18-5466 and 18-5469. Note that this kit is not compatible with shift assist modules.\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 18-5296-2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Electronic Conversion Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e PleasureCraft Electronic Ignition Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Most Mallory YL \u0026amp; YD 8 cylinder distributors, clockwise and counter clockwise rotation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming Accuracy:\u003c\/strong\u003e Within 1\/4 degree, 0 to 6000 RPM range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHook-up:\u003c\/strong\u003e One-piece, 2-wire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistance:\u003c\/strong\u003e 1.5 Ohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Coils:\u003c\/strong\u003e Standard coil, cap, and rotor; also usable with Flame Thrower Coils 18-5466 \u0026amp; 18-5469\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e Not compatible with shift assist modules\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.33 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282194901\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMost Mallory YL \u0026amp; YD 8 cylinder distributors with clockwise and counter clockwise rotation\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eGLM 72520\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5296-2 kit do?\u003c\/strong\u003e It converts a Mallory YL or YD 8 cylinder distributor from points-and-condenser ignition to true solid state electronic ignition, using a one-piece module with a 2-wire hook-up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5296-2 fit my distributor?\u003c\/strong\u003e This kit fits most Mallory YL \u0026amp; YD 8 cylinder distributors, including those with either clockwise or counter clockwise rotation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit replace the points and condenser?\u003c\/strong\u003e Yes, the Sierra 18-5296-2 replaces the points and condenser entirely, giving true solid state ignition instead of a mechanical breaker point system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a new coil, cap, or rotor to use this kit?\u003c\/strong\u003e No, the 18-5296-2 is designed to work with your standard coil, cap, and rotor, so those existing components stay in place.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow accurate is the timing with this conversion kit installed?\u003c\/strong\u003e Timing accuracy is held to within 1\/4 degree across a 0 to 6000 RPM range once the 18-5296-2 is installed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5296-2 difficult to install?\u003c\/strong\u003e No, it is built as a one-piece unit with a simple 2-wire hook-up, which makes installation straightforward compared to wiring a multi-component ignition upgrade.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this kit be used with an aftermarket coil upgrade?\u003c\/strong\u003e Yes, the 18-5296-2 can be used with Sierra's Flame Thrower Coils 18-5466 and 18-5469 if you want to upgrade the coil as well.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the resistance rating of the 18-5296-2 module?\u003c\/strong\u003e The Sierra 18-5296-2 electronic conversion module has a resistance rating of 1.5 Ohms.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5296-2 compatible with shift assist modules?\u003c\/strong\u003e No, the Sierra 18-5296-2 is specifically noted as not compatible with shift assist modules.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the equivalent OEM or cross-reference number for this part?\u003c\/strong\u003e The Sierra 18-5296-2 interchanges with GLM 72520.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5296-2 conversion kit weigh?\u003c\/strong\u003e The kit weighs 0.33 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat brand makes part number 18-5296-2?\u003c\/strong\u003e Part number 18-5296-2 is manufactured by Sierra.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988208464091,"sku":"SIE-18-5296-2","price":190.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5296-2__06144.1739458821.500.750.jpg?v=1785189076"},{"product_id":"sierra-18-5297-electronic-ignition-conversion-kit-for-4-cylinder-gm-mercruiser-engines-with-delco-distributor-fl153-fl181-1975-1980","title":"Sierra 18-5297 Electronic Ignition Conversion Kit for 4-Cylinder GM, Interchanges with GLM 72510","description":"\u003cp\u003eThe Sierra 18-5297 Electronic Ignition Conversion Kit replaces points and a condenser with a true solid-state ignition system for 4-Cylinder GM marine engines. Points-and-condenser systems wear over time and require periodic gapping and replacement; this kit eliminates that mechanical contact point entirely, delivering consistent spark and more reliable starting. The kit is built as a one-piece, two-wire hookup, so it installs into the existing distributor without requiring a new coil, cap, or rotor.\u003c\/p\u003e\u003cp\u003eTiming accuracy is held within 1\/4 degree across a 0 to 6000 RPM range, which keeps ignition timing consistent from idle through high RPM operation. The kit carries 3 ohms of resistance and is designed to work with Sierra's Flame Thrower coils 18-5466 and 18-5469 if a coil upgrade is desired. It is not compatible with shift assist modules.\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 18-5297\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Electronic Ignition Conversion Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 4-Cylinder GM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming Accuracy:\u003c\/strong\u003e Within 1\/4 degree, 0 to 6000 RPM range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistance:\u003c\/strong\u003e 3 ohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e One-piece, 2-wire hookup\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Coils:\u003c\/strong\u003e Sierra Flame Thrower 18-5466 and 18-5469\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.34 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\u003eUPC:\u003c\/strong\u003e 030999754189\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e4-Cylinder GM\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eInterchanges with GLM 72510\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5297 conversion kit do?\u003c\/strong\u003e It replaces the points and condenser in a 4-Cylinder GM distributor with a true solid-state electronic ignition, removing the wear-prone mechanical contact point from the ignition system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5297 kit work with my existing coil, cap, and rotor?\u003c\/strong\u003e Yes, the Sierra 18-5297 is designed to use your standard coil, cap, and rotor, so no additional ignition components are required beyond the kit itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow accurate is the timing on this ignition kit?\u003c\/strong\u003e The 18-5297 holds timing accuracy within 1\/4 degree across a 0 to 6000 RPM range, keeping spark timing consistent from idle to high RPM.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the resistance rating of the 18-5297 kit?\u003c\/strong\u003e The Sierra 18-5297 Electronic Ignition Conversion Kit has a resistance rating of 3 ohms.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5297 kit difficult to install?\u003c\/strong\u003e No, it is built as a one-piece unit with a 2-wire hookup, which is designed for straightforward installation into the existing 4-Cylinder GM distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5297 have a GLM equivalent number?\u003c\/strong\u003e Yes, the Sierra 18-5297 interchanges with GLM 72510.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-5297 kit be paired with a performance coil?\u003c\/strong\u003e Yes, it can be used with Sierra's Flame Thrower coils 18-5466 and 18-5469 for a coil upgrade.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5297 kit compatible with shift assist modules?\u003c\/strong\u003e No, the 18-5297 is not compatible with shift assist modules.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the 18-5297 fit?\u003c\/strong\u003e The Sierra 18-5297 Electronic Ignition Conversion Kit is designed for 4-Cylinder GM engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5297 conversion kit weigh?\u003c\/strong\u003e The Sierra 18-5297 weighs 0.34 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy switch from points and condenser to the 18-5297 electronic kit?\u003c\/strong\u003e Points and condensers wear and require periodic gapping or replacement; the 18-5297 replaces them with solid-state electronics for more consistent ignition performance over time.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988208759003,"sku":"SIE-18-5297","price":179.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5297_lg__51460.1558127743.500.750.jpg?v=1785188887"},{"product_id":"cdi-ignition-upgrade-kit-for-mercury-mariner-v6-16-amp-outboards-sierra-mpn-18-99348-cdi-214-7778k-1-cross-reference","title":"Sierra Mercury Mariner Outboard Ignition Upgrade Kit 18-99348 - Fits Mercury 16 Amp V6 Engines","description":"\u003cp\u003eThe Sierra 18-99348 is a bolt-on ignition upgrade kit engineered for Mercury and Mariner outboard applications, specifically designed to fit Mercury 16 Amp V6 engines. Ignition upgrade kits like this one are used when an outboard's charging or ignition circuit needs to be brought up to a higher amperage output, giving the engine's electrical system more reliable capacity for running accessories, electronics, and starting loads. The kit installs using a bolt-on mounting approach, so it integrates into the existing engine layout without requiring custom fabrication, and it terminates in a male connector for straightforward wiring into the boat's harness.\u003c\/p\u003e\u003cp\u003eBuilt for marine service, the 18-99348 is intended for use on boats rather than automotive or industrial equipment, reflecting the corrosion exposure and duty cycle that outboard ignition components see on the water. At 5.9 pounds, it carries the weight of a complete ignition-side upgrade assembly rather than a single small component. Boat owners running Mercury 16 Amp V6 outboards use this kit to replace or upgrade their existing ignition setup with a part sized and connectored specifically for that engine family.\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 18-99348\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Upgrade Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine:\u003c\/strong\u003e Mercury 16 Amp V6 Engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Gender:\u003c\/strong\u003e Male\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Service Type:\u003c\/strong\u003e Boat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 5.9 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury 16 Amp V6 outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99348 ignition upgrade kit fit?\u003c\/strong\u003e The Sierra 18-99348 is designed to fit Mercury 16 Amp V6 outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99348 a bolt-on installation?\u003c\/strong\u003e Yes, the 18-99348 uses a bolt-on installation type, so it mounts into the existing engine layout without custom fabrication.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat connector type does this ignition kit use?\u003c\/strong\u003e It terminates in a male connector for wiring into the outboard's existing harness.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-99348 kit weigh?\u003c\/strong\u003e The kit weighs 5.9 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-99348 rated for marine use?\u003c\/strong\u003e Yes, its vehicle service type is listed as boat, meaning it is built for marine ignition applications rather than automotive or industrial use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit fit any Mercury outboard, or only specific engines?\u003c\/strong\u003e Fitment for the 18-99348 is specific to Mercury 16 Amp V6 engines, not Mercury outboards in general.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99348 an OEM part or an aftermarket kit?\u003c\/strong\u003e The 18-99348 is manufactured by Sierra as an aftermarket ignition upgrade kit for Mercury 16 Amp V6 engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99348 require any modification to install?\u003c\/strong\u003e No modification is required since it is a bolt-on kit that installs using the engine's existing mounting points.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this kit be used on a Mariner-branded outboard as well as Mercury?\u003c\/strong\u003e Yes, the 18-99348 is built for Mercury and Mariner outboard applications with Mercury 16 Amp V6 engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size or capacity upgrade does the 18-99348 provide?\u003c\/strong\u003e The kit is sized for Mercury's 16 Amp V6 engine ignition circuit, matching that engine family's electrical requirements.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988442427611,"sku":"SIE-18-99348","price":1065.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/51AHWysdkOL.jpg?v=1784412197"},{"product_id":"sierra-18-99527-inline-neon-spark-tester-single-cylinder-ignition-spark-checker-for-marine-engines-and-pwc","title":"Sierra Neon Spark Tester 18-99527, Inline 1-Cylinder Spark Checker for PWC Engines","description":"\u003cp\u003eThe Sierra Neon Spark Tester (18-99527) is an inline, single-cylinder tool for checking spark on a running engine, built with personal watercraft (PWC) applications in mind. It installs in-line with the spark plug lead so you can visually confirm the ignition system is firing while the engine runs, without pulling the plug or guessing at a weak connection. The tester uses a sealed neon design, which adds a margin of safety by reducing the chance of igniting gas fumes that can collect in a PWC hull, an important consideration given how enclosed the engine compartment is on most personal watercraft. Because it checks spark under actual running conditions rather than a static bench test, it gives a more realistic read on ignition performance, helping narrow down hard-starting, misfire, or no-spark complaints to the ignition side of the engine before moving on to plugs, coils, or the CDI\/ignition module. It is sized for a single cylinder, so multi-cylinder engines are checked one plug lead at a time. This is a diagnostic accessory meant for technicians and owners doing their own ignition troubleshooting on outboard and PWC 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 18-99527\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Neon Spark Tester - 1 Cyl.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Sealed, inline neon spark tester\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Capacity:\u003c\/strong\u003e 1 cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Application:\u003c\/strong\u003e Personal watercraft (PWC) ignition systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse Case:\u003c\/strong\u003e Checking spark on a running engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 7.83 x 4.45 x 2.32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282394844\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-99527 spark tester do?\u003c\/strong\u003e It installs inline with a spark plug lead so you can visually confirm the ignition system is firing while the engine is running, making it a quick way to check for spark without disconnecting the plug.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this tester safe to use on a personal watercraft?\u003c\/strong\u003e Yes, the 18-99527 has a sealed neon design intended to reduce the chance of igniting gas fumes, which is a particular concern in the enclosed hull of a PWC.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many cylinders can this tester check at once?\u003c\/strong\u003e The 18-99527 is a 1-cylinder tester, so on a multi-cylinder engine you check one plug lead at a time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this while the engine is running?\u003c\/strong\u003e Yes, the Sierra 18-99527 is designed to check spark on a running engine, giving a real-time read on ignition performance rather than a static bench check.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-99527 spark tester?\u003c\/strong\u003e The packaged unit measures 7.83 x 4.45 x 2.32 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the spark tester weigh?\u003c\/strong\u003e The Sierra 18-99527 Neon Spark Tester weighs 0.3 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the 18-99527 intended for?\u003c\/strong\u003e It is intended for personal watercraft (PWC) engines, where checking spark safely in a confined hull space matters most.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the tester require any tools to install?\u003c\/strong\u003e It is an inline tester that connects in the spark plug lead circuit; no additional tools are needed to place it in line for a spark check.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy use a sealed neon design instead of an open spark gap tester?\u003c\/strong\u003e The sealed design on the 18-99527 lowers the risk of sparking near open gas fumes, which is safer than an exposed spark gap when working around a PWC engine compartment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat UPC is associated with this product?\u003c\/strong\u003e The Sierra Neon Spark Tester, part number 18-99527, carries UPC 808282394844.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988445442267,"sku":"SIE-18-99527","price":41.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-511-9764_lg__29156.1558114584.500.750.jpg?v=1785188896"},{"product_id":"sierra-18-99531-metric-spark-gap-adapter-for-johnson-evinrude-outboards-ignition-diagnostic-adapter","title":"Sierra Metric Adapter 18-99531 for Johnson Evinrude Outboard Ignition Systems","description":"\u003cp\u003eThe Sierra 18-99531 is a metric adapter built for Johnson and Evinrude outboard ignition systems. It provides a reliable connection point within the ignition circuit, letting technicians and boat owners mate metric-threaded ignition components to the outboard's wiring or hardware without improvising a fix. The adapter is constructed of aluminum and plastic, giving it a solid, corrosion-resistant body paired with an insulated plastic section where electrical isolation is needed.\u003c\/p\u003e\u003cp\u003eSold as a single adapter per package, the 18-99531 is a compact, lightweight component at just 0.1 pounds, making it easy to keep on hand as a spare for ignition service and repair work on Johnson and Evinrude outboards. Because it is purpose-built for these ignition systems, it drops into the ignition circuit in place of the original connector without modification.\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 18-99531\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Metric Adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum, Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 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 736983856173\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Johnson and Evinrude outboard ignition systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-99531 metric adapter used for?\u003c\/strong\u003e It is a metric adapter for Johnson and Evinrude outboard ignition systems, used to connect metric-threaded ignition components into the ignition circuit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-99531 made of?\u003c\/strong\u003e The adapter is made of aluminum and plastic, combining a durable metal body with an insulated plastic section.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-99531 weigh?\u003c\/strong\u003e The Sierra 18-99531 metric adapter weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-99531 fit both Johnson and Evinrude outboards?\u003c\/strong\u003e Yes, the Sierra 18-99531 is designed for use on Johnson and Evinrude outboard ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when you order the Sierra 18-99531?\u003c\/strong\u003e One Sierra 18-99531 metric adapter is included per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-99531 metric adapter?\u003c\/strong\u003e The UPC for the Sierra 18-99531 is 736983856173.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99531 an OEM part or a replacement adapter?\u003c\/strong\u003e The 18-99531 is a Sierra-branded adapter for Johnson and Evinrude ignition systems, sold under Sierra's own part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the Sierra 18-99531 be installed without modification?\u003c\/strong\u003e It is built to connect directly within the Johnson or Evinrude ignition circuit as a metric adapter, without requiring modification to install.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99531 a lightweight, compact part?\u003c\/strong\u003e At 0.1 pounds, the Sierra 18-99531 metric adapter is a compact, lightweight component that is easy to keep as a spare part.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988445671643,"sku":"SIE-18-99531","price":14.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-551-334M_lg__54606.1558111846.500.750.jpg?v=1785187994"},{"product_id":"metric-adapter-for-suzuki-outboards-sierra-18-99535","title":"Sierra Metric Adapter 18-99535 for Suzuki Outboard Engines, Cross to CDI Electronics 551-334S","description":"\u003cp\u003eThe Sierra 18-99535 metric adapter is built for Suzuki outboard engines, providing the correct metric fitting connection for ignition-related wiring components on these motors. It cross-references to CDI Electronics part number 551-334S, so it serves as the equivalent fitting where that CDI component is called for. At 0.1 pounds, it is a small, lightweight hardware item meant to be kept on hand for outboard ignition wiring service and repair work on Suzuki-powered boats.\u003c\/p\u003e\u003cp\u003eThis adapter is identified under the Sierra part number 18-99535 and shares the UPC 736983856180 with its CDI Electronics 551-334S counterpart, confirming it is the same fitting cross-listed under two part-number systems. It is intended for technicians and boat owners performing ignition or wiring adapter replacement on Suzuki outboard 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 18-99535\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Metric Adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Suzuki Outboard Parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 736983856180\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-Reference:\u003c\/strong\u003e CDI Electronics 551-334S\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eSuzuki outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eCDI Electronics 551-334S\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-99535 metric adapter used for?\u003c\/strong\u003e It is a metric adapter for Suzuki outboard engines, used to provide the correct metric fitting connection in ignition-related wiring service on these motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99535 compatible with CDI Electronics parts?\u003c\/strong\u003e Yes, the Sierra 18-99535 cross-references to CDI Electronics part number 551-334S, making it the equivalent fitting for that component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99535 metric adapter weigh?\u003c\/strong\u003e The Sierra 18-99535 metric adapter weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does this metric adapter fit?\u003c\/strong\u003e Sierra part number 18-99535 is designated for Suzuki outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I identify the correct part when ordering?\u003c\/strong\u003e Order by Sierra part number 18-99535, or by UPC 736983856180, which is shared with the equivalent CDI Electronics 551-334S listing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-99535 a genuine Sierra part?\u003c\/strong\u003e Yes, it is sold under the Sierra part number 18-99535 as a metric adapter for Suzuki outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Sierra 18-99535 and the CDI Electronics 551-334S?\u003c\/strong\u003e They are the same metric adapter fitting, sharing UPC 736983856180, with the Sierra 18-99535 cross-referencing directly to CDI Electronics 551-334S.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this adapter be used on other outboard brands besides Suzuki?\u003c\/strong\u003e The Sierra 18-99535 metric adapter is designated for Suzuki outboard engines; no other engine fitment is specified for this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99535 replace an OEM CDI Electronics component?\u003c\/strong\u003e Yes, Sierra 18-99535 replaces CDI Electronics part number 551-334S for Suzuki outboard ignition wiring applications.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988445704411,"sku":"SIE-18-99535","price":14.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-551-334S_lg__13341.1558111933.500.750.jpg?v=1785188354"},{"product_id":"sierra-18-99540-adjustable-spark-tester-for-1-8-cylinder-marine-engines","title":"Sierra Spark Tester 18-99540 with Adjustable Open Spark Gap for 1-8 Cylinder Marine Engines","description":"\u003cp\u003eThe Sierra 18-99540 Spark Tester is a diagnostic tool used to check spark output and ignition performance on marine engines with 1 to 8 cylinders. It features an adjustable section that lets you set an open spark gap, allowing you to visually confirm a strong, consistent spark rather than relying on a plug that may mask a weak or intermittent ignition signal. This makes it a practical first step when troubleshooting no-start conditions, rough running, or suspected ignition component failures on inboard and sterndrive engines.\u003c\/p\u003e\u003cp\u003eThe tester connects in place of a spark plug in the ignition circuit, giving technicians and boat owners a quick visual reference for spark quality across each cylinder. It is compatible with engines ranging from single-cylinder to 8-cylinder configurations, making it a versatile tool for a wide range of marine powerplants. Replacement spark plug wire tips and metric adapters are available separately for use with this tester, extending its compatibility with different wire terminal styles.\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 18-99540\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Spark Tester with Adjustable Section\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Compatibility:\u003c\/strong\u003e 1-8 cylinder engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Gap:\u003c\/strong\u003e Adjustable, open spark gap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 4.02 x 12.01 x 7.99 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 736983855831\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e CDI Electronics 519S48\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1-8 cylinder marine engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eCDI Electronics 519S48\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-99540 spark tester used for?\u003c\/strong\u003e It checks spark output and ignition quality on marine engines with 1 to 8 cylinders by letting you view an open spark gap in place of a spark plug, which helps confirm whether the ignition system is firing correctly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many cylinders does this spark tester support?\u003c\/strong\u003e The Sierra 18-99540 is rated for engines with 1 to 8 cylinders, covering everything from single-cylinder outboards to V-8 inboard and sterndrive engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the spark gap adjustable?\u003c\/strong\u003e Yes, the 18-99540 has an adjustable section that lets you set the open spark gap, so you can vary the test conditions and better judge spark strength and consistency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-99540 have an equivalent OEM part number?\u003c\/strong\u003e Yes, the Sierra 18-99540 corresponds to CDI Electronics part number 519S48, so either number will identify the same spark tester.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99540 spark tester weigh?\u003c\/strong\u003e It weighs 1.3 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this spark tester?\u003c\/strong\u003e The Sierra 18-99540 spark tester measures 4.02 x 12.01 x 7.99 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I replace the spark plug wire tips on this tester?\u003c\/strong\u003e Yes, replacement spark plug wire tips (P\/N 519-48TA) are available separately for use with the 18-99540 spark tester when the original tips wear out.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre metric adapters available for this tool?\u003c\/strong\u003e Yes, metric adapters (P\/N 519-48M) are available separately for the 18-99540 spark tester for use with metric-threaded plug wires.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many spark testers come in the package?\u003c\/strong\u003e The Sierra 18-99540 spark tester ships as a package quantity of one unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-99540 spark tester?\u003c\/strong\u003e The UPC for this spark tester is 736983855831.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this spark tester suitable for troubleshooting a no-start condition?\u003c\/strong\u003e Yes, checking spark output with the 18-99540 is a common first diagnostic step for no-start or rough-running conditions, since it lets you see whether each cylinder is producing a strong spark.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988446032091,"sku":"SIE-18-99540","price":230.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-519-S48_lg__76580.1558113106.500.750.jpg?v=1785189209"},{"product_id":"sierra-18-99547-marine-spark-tester-for-4-cylinder-outboards-ignition-spark-checker-tool","title":"Sierra Spark Tester for 4 Cylinder Mercury Outboards, Part 18-99547","description":"\u003cp\u003eThe Sierra Spark Tester, part number 18-99547, is an in-line spark checker built for diagnosing ignition problems on 4 cylinder Mercury outboard engines. Instead of pulling a spark plug and guessing at spark quality by eye, this tester lets you check for consistent, visible spark directly in line with the plug wire while the engine is cranking or running, which makes it much easier to isolate a weak coil, bad plug wire, or faulty ignition component before you start swapping parts. It is built with a copper core for reliable conductivity during repeated testing.\u003c\/p\u003e\u003cp\u003eThis is a diagnostic tool sized specifically for 4 cylinder outboard applications, so it is set up to test spark across all four cylinders of a compatible Mercury outboard engine. It is a straightforward addition to any marine mechanic's or DIY boater's toolbox for troubleshooting no-start conditions, rough idle, or misfire complaints tied to the ignition system.\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 18-99547\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Spark Tester - 4 Cyl.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Specialty Tools\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Configuration:\u003c\/strong\u003e 4 Cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCore Material:\u003c\/strong\u003e Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.8 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282395247\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e4 cylinder Mercury outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-99547 spark tester do?\u003c\/strong\u003e It checks for spark on 4 cylinder Mercury outboard engines by connecting in line with the spark plug wire, letting you visually confirm consistent spark while the engine cranks or runs instead of pulling the plug to guess.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many cylinders does this spark tester cover?\u003c\/strong\u003e The 18-99547 tester is built for 4 cylinder outboard engines, matching the ignition layout of a 4 cylinder Mercury outboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99547 only for Mercury outboards?\u003c\/strong\u003e It is categorized and sized for 4 cylinder Mercury outboard engines, so that is its intended application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the spark tester's contact core made of?\u003c\/strong\u003e The core of part 18-99547 is copper, chosen for reliable electrical conductivity during repeated spark checks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-99547 spark tester weigh?\u003c\/strong\u003e It weighs 0.8 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this tool diagnose a no-start condition?\u003c\/strong\u003e Yes, checking for spark with the 18-99547 is a standard first step in diagnosing a no-start or misfire, since it isolates whether the ignition system is delivering spark to the cylinder.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to remove the spark plug to use this tester?\u003c\/strong\u003e No, the 18-99547 connects in line with the plug wire so you can check spark without pulling the spark plug.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99547 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-99547 is the Sierra manufacturer part number for this spark tester.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat ignition problems can this tester help identify?\u003c\/strong\u003e Weak or missing spark, a failing ignition coil, or a bad plug wire on a 4 cylinder Mercury outboard can all be narrowed down using the 18-99547 spark tester.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with part 18-99547?\u003c\/strong\u003e The product is the Sierra spark tester itself, part number 18-99547, sized for 4 cylinder outboard ignition testing.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988446261467,"sku":"SIE-18-99547","price":117.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-519-S48H_lg__88665.1558113209.500.750.jpg?v=1785188258"},{"product_id":"marine-ignition-tune-up-kit-with-distributor-cap-replaces-18-5273-fits-mercruiser-500-bulldog-800-sc-v-8-300-03085","title":"Engineered Marine Products Tune-Up Kit with Distributor Cap, Part 300-03085, for Mercruiser Engines","description":"\u003cp\u003eThe Engineered Marine Products Tune-Up Kit with Cap, part number 300-03085, is a complete ignition tune-up kit built for Mercruiser inboard\/outboard engines. It bundles a distributor cap with the additional ignition components needed to refresh an aging ignition system in one purchase, saving the time and guesswork of sourcing individual pieces separately. The kit carries a machined exterior finish for a precise, durable fit at installation.\u003c\/p\u003e\u003cp\u003eEngineered Marine Products has supplied both OEM and marine after-market channels for over 40 years, engineering and sourcing ignition components to standard OEM specifications. This tune-up kit is intended as a like-for-like refresh for Mercruiser ignition systems that are due for scheduled maintenance or are showing signs of ignition wear such as hard starting or misfiring.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Engineered Marine Products\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 300-03085\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 840080416250\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Tune-Up Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 6 x 4.5 x 4.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.783 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Distributor cap\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Engineered Marine Products Tune-Up Kit with Cap, part 300-03085, include?\u003c\/strong\u003e Part number 300-03085 is a tune-up kit that includes a distributor cap along with the additional ignition components needed for a Mercruiser ignition tune-up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does this tune-up kit fit?\u003c\/strong\u003e The 300-03085 tune-up kit is designed for Mercruiser engines as part of a scheduled ignition tune-up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the weight of part 300-03085?\u003c\/strong\u003e The Engineered Marine Products Tune-Up Kit with Cap weighs 0.783 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the kit?\u003c\/strong\u003e Part 300-03085 measures 6 x 4.5 x 4.5 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the distributor cap have?\u003c\/strong\u003e The distributor cap in kit 300-03085 has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Engineered Marine Products part?\u003c\/strong\u003e Yes, part number 300-03085 is manufactured by Engineered Marine Products, a company that has supplied OEM and marine after-market ignition parts for over 40 years.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace my Mercruiser ignition tune-up components?\u003c\/strong\u003e The 300-03085 kit is intended for use when a Mercruiser ignition system is due for scheduled maintenance or is showing signs of ignition wear.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the UPC 840080416250 correspond to a specific part number?\u003c\/strong\u003e Yes, UPC 840080416250 corresponds to Engineered Marine Products part number 300-03085, the Tune-Up Kit with Cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs installation of the 300-03085 kit straightforward?\u003c\/strong\u003e The kit's exact-fit machined components are designed for the ignition system they are built to replace, supporting a direct tune-up installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho manufactures part 300-03085?\u003c\/strong\u003e Part 300-03085 is manufactured by Engineered Marine Products, which engineers and sources ignition components to OEM specifications.\u003c\/p\u003e","brand":"EMP","offers":[{"title":"Default Title","offer_id":48991284691163,"sku":"EMP-300-03085","price":42.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/EMP-300-03085-MerCruiser-Tune-Up-Kit__98867.1722512702.500.750.jpg?v=1785188877"},{"product_id":"cdi-electronics-214-7778k3-v6-40-amp-ignition-upgrade-kit-for-mercury-mariner-outboards","title":"CDI Electronics 214-7778K3 V6 40 Amp Ignition Upgrade Kit for Mercury Mariner Outboards","description":"\u003cp\u003eThe CDI Electronics 214-7778K3 is a V6 High Performance 40 Amp Ignition Kit built for Mercury and Mariner V6 40 Amp outboard engines. This upgrade kit is designed to replace an outboard's ignition components as a matched set rather than piecing together individual parts, giving V6 40 Amp Mercury\/Mariner owners a complete ignition refresh in one purchase.\u003c\/p\u003e\u003cp\u003eThe kit includes two 214-7778R2 components, two 274-9610S2 components, and one 134-6456 ignition coil rated at 40 amps. Supplying the coil and matched ignition components together helps ensure the electrical characteristics of the ignition system are properly matched across the V6 configuration, which is the intent behind CDI packaging these parts as a kit rather than selling them separately.\u003c\/p\u003e\u003cp\u003eThis is a high performance ignition kit, meaning it is intended for outboard applications running the 40 Amp ignition system rather than the standard-amperage ignition found on other Mercury\/Mariner outboards. Because it is sold as a kit, it is ordered as a single part number (214-7778K3) covering all included components, simplifying sourcing for a full ignition rebuild.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e CDI Electronics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 214-7778K3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e (2) 214-7778R2, (2) 274-9610S2, and 134-6456 40 Amp Ignition Coil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Coil Rating:\u003c\/strong\u003e 40 Amp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Mercury V6 40 Amp Engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 736983853363\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.8 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury\/Mariner V6 40 Amp outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the CDI Electronics 214-7778K3 kit include?\u003c\/strong\u003e The 214-7778K3 kit includes two 214-7778R2 components, two 274-9610S2 components, and one 134-6456 40 Amp ignition coil, packaged together as a single ignition upgrade kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the 214-7778K3 ignition kit fit?\u003c\/strong\u003e This kit is designed for Mercury and Mariner V6 40 Amp outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 214-7778K3 a complete ignition system or individual parts?\u003c\/strong\u003e It is sold as a complete kit under one part number, 214-7778K3, rather than as separate individual components, so all matched pieces arrive together.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the amperage rating of the ignition coil in this kit?\u003c\/strong\u003e The 134-6456 ignition coil included in the CDI 214-7778K3 kit is rated at 40 amps, matching the kit's 40 Amp ignition designation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many of each component come in the 214-7778K3 kit?\u003c\/strong\u003e The kit contains two 214-7778R2 components and two 274-9610S2 components, plus a single 134-6456 40 Amp ignition coil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 214-7778K3 ignition kit weigh?\u003c\/strong\u003e The complete CDI 214-7778K3 kit weighs 0.8 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 214-7778K3 kit suitable for standard-amperage Mercury outboards?\u003c\/strong\u003e No, the 214-7778K3 is a 40 Amp ignition kit built specifically for Mercury\/Mariner V6 40 Amp engines, not standard-amperage ignition systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat brand makes the 214-7778K3 ignition kit?\u003c\/strong\u003e This ignition kit is manufactured by CDI Electronics under part number 214-7778K3.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 214-7778K3 kit come with installation instructions?\u003c\/strong\u003e The dossier for the CDI 214-7778K3 kit does not specify included installation documentation, so buyers should confirm this detail before installation if it is required.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the CDI 214-7778K3 ignition kit?\u003c\/strong\u003e The UPC for the CDI Electronics 214-7778K3 V6 40 Amp Ignition Kit is 736983853363.\u003c\/p\u003e","brand":"CDI Electronics","offers":[{"title":"Default Title","offer_id":49027441459419,"sku":"CDI-214-7778K-3","price":1341.39,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-214-7778K3_lg__78245.1722500590.500.750.jpg?v=1785163454"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/collections\/CDI-214-7778K3_lg__78245.1722500590.500.750.jpg?v=1785356953","url":"https:\/\/www.goodvibesmarina.com\/collections\/gvcat-engine-parts-systems-ignition-starting-ignition-tune-up-kits-tools.oembed","provider":"Good Vibes Marina","version":"1.0","type":"link"}