{"product_id":"sierra-18-5186-ignition-coil-for-mercury-mariner-chrysler-force-outboards-replaces-339-7370a13-339-832757b4","title":"Sierra 18-5186 Ignition Coil for Mercury\/Mariner and Chrysler\/Force Outboard Engines","description":"\u003cp\u003eThe Sierra 18-5186 is an ignition coil built for select Mercury\/Mariner and Chrysler\/Force outboard engines, supplying the coil-near-plug spark energy needed to fire the spark plugs at the correct interval. It ships one coil per package and is intended as a direct replacement for the original equipment coil on covered engines, with Sierra stating that each unit meets or exceeds the performance of the original part it replaces. The coil uses a female connector for a secure plug-in fit to the existing wiring harness, and its compact 0.39 x 0.39 x 0.39 inch body allows it to mount in the same location as the factory unit without modification.\u003c\/p\u003e\u003cp\u003eFitment is engine-serial-number specific across a range of Mercury\/Mariner outboard horsepower ratings, including 15 hp, 15XD, 18 hp, and 20 hp models, spanning Sea-Pro, Commercial, Non-Commercial, and BULLET Commercial variants, so buyers should confirm their engine's serial number falls within the covered range before ordering. This is a fit-specific ignition part, so checking part numbers against the original coil is recommended 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 18-5186\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Coil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Gender:\u003c\/strong\u003e Female\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Coil-near-plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.41 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 coil per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999236814\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e Select Mercury\/Mariner and Chrysler\/Force outboard engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury\/Mariner 15 hp, serial number B292414-G760299 and later ranges through G760300 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003eMercury\/Mariner 15 hp Sea-Pro, serial number G044027-G437999\u003c\/li\u003e\n\u003cli\u003eMercury\/Mariner 15 hp Commercial and Non-Commercial, serial number G760300 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003eMercury\/Mariner 15XD Commercial and Non-Commercial, serial number G760300 \u0026amp; up (Non-Commercial from 760300 \u0026amp; up)\u003c\/li\u003e\n\u003cli\u003eMercury\/Mariner 18 hp, serial number 5837437-6443972 and 6443973 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003eMercury\/Mariner 18 hp BULLET Commercial, serial number 6443973 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003eMercury\/Mariner 20 hp, serial number 3537531-3755884, 6443973-G044026, G044027-G437999, and G438000-G760299\u003c\/li\u003e\n\u003cli\u003eMercury\/Mariner 20 hp Commercial and Non-Commercial, serial number G760300-T800999\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMallory 9-23200\u003c\/li\u003e\n\u003cli\u003eChrysler\/Force\/US Marine 339-7370A23\u003c\/li\u003e\n\u003cli\u003eChrysler\/Force F718475\u003c\/li\u003e\n\u003cli\u003eMercury Sport Jet 339-832757A4\u003c\/li\u003e\n\u003cli\u003eMercury Race Outboard 339-7370A13\u003c\/li\u003e\n\u003cli\u003eMercury Marine 338-4774A1\u003c\/li\u003e\n\u003cli\u003eMercury Marine 338-4995A1\u003c\/li\u003e\n\u003cli\u003eMercury Marine 338-4995A2\u003c\/li\u003e\n\u003cli\u003eMercury Marine 339-7370A16\u003c\/li\u003e\n\u003cli\u003eMercury Marine 339-7370A17\u003c\/li\u003e\n\u003cli\u003eMercury Marine 339-7370A19\u003c\/li\u003e\n\u003cli\u003eMercury Marine 339-7370A2\u003c\/li\u003e\n\u003cli\u003eMercury Marine 339-7370A6\u003c\/li\u003e\n\u003cli\u003eMercury Marine 339-7370A8\u003c\/li\u003e\n\u003cli\u003eMercury Marine 339-7370B13\u003c\/li\u003e\n\u003cli\u003eMercury Marine 339-832757A3\u003c\/li\u003e\n\u003cli\u003eMercury Marine 339-832757B4\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5186 ignition coil fit?\u003c\/strong\u003e The Sierra 18-5186 fits select Mercury\/Mariner outboard engines in the 15 hp, 15XD, 18 hp, and 20 hp range, including Sea-Pro, Commercial, Non-Commercial, and BULLET Commercial variants, as well as select Chrysler\/Force outboard engines. Because coverage is tied to engine serial number, confirm your engine's serial number falls within the listed range before ordering part 18-5186.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many ignition coils come in the package?\u003c\/strong\u003e One Sierra 18-5186 ignition coil is included per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5186 coil an OEM part or aftermarket?\u003c\/strong\u003e The 18-5186 is a Sierra-branded replacement coil, not an original Mercury or Chrysler\/Force part, but Sierra states it meets or exceeds the performance of the original equipment coil it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-5186 replace?\u003c\/strong\u003e The 18-5186 is interchangeable with Mallory 9-23200; Chrysler\/Force\/US Marine 339-7370A23 and F718475; Mercury Sport Jet 339-832757A4; Mercury Race Outboard 339-7370A13; and Mercury Marine numbers 338-4774A1, 338-4995A1, 338-4995A2, 339-7370A16, 339-7370A17, 339-7370A19, 339-7370A2, 339-7370A6, 339-7370A8, 339-7370B13, 339-832757A3, and 339-832757B4.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the connector type on this ignition coil?\u003c\/strong\u003e The Sierra 18-5186 uses a female connector for a plug-in fit to the engine's existing ignition wiring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-5186 ignition coil?\u003c\/strong\u003e The coil measures 0.39 x 0.39 x 0.39 inches and weighs 0.41 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5186 coil work on a 20 hp Mercury outboard?\u003c\/strong\u003e Yes, part 18-5186 covers Mercury\/Mariner 20 hp outboards across several serial number ranges, including 3537531-3755884, 6443973-G044026, G044027-G437999, G438000-G760299, and G760300-T800999 for Commercial and Non-Commercial models. Check your engine's serial number against these ranges to confirm coverage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this coil fit an 18 hp BULLET Commercial engine?\u003c\/strong\u003e Part number 18-5186 is listed for the 18 hp BULLET Commercial engine with serial number 6443973 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the ignition coil installed?\u003c\/strong\u003e The Sierra 18-5186 is designed as a direct replacement for the original coil, connecting via its female connector in the same mounting location as the factory unit, though a qualified marine technician should perform the swap to ensure correct timing and connections.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5186 fit specific or a universal coil?\u003c\/strong\u003e The 18-5186 is fit specific to particular Mercury\/Mariner and Chrysler\/Force outboard engine models and serial number ranges, so part numbers should be checked against the original coil before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5186 ignition coil?\u003c\/strong\u003e The UPC for the Sierra 18-5186 ignition coil is 030999236814.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988200730843,"sku":"SIE-18-5186","price":50.13,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__05368.1753840679.500.750.jpg?v=1785189006","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-5186-ignition-coil-for-mercury-mariner-chrysler-force-outboards-replaces-339-7370a13-339-832757b4","provider":"Good Vibes Marina","version":"1.0","type":"link"}