{"product_id":"sierra-18-5172-ignition-coil-for-johnson-evinrude-outboard-replaces-omc-581786-502881","title":"Sierra 18-5172 Marine Ignition Coil, Replaces OMC 581786 - Johnson\/Evinrude Outboard Motor","description":"\u003cp\u003eThe Sierra 18-5172 is a marine ignition coil built for Johnson and Evinrude outboard motors. It is manufactured to meet or exceed original equipment quality, giving boat owners a reliable way to restore spark output on an outboard with a failed or weakening coil. The coil cross-references directly to Evinrude\/Johnson OEM numbers 0581786, 0581370, and 0502881, as well as OMC 581786, GLM 72030, and Mallory 9-23106, so it can be ordered as a straightforward, drop-in replacement for the original part using any of those reference numbers.\u003c\/p\u003e\u003cp\u003eThe coil has a compact body measuring 0.39 x 0.39 x 0.39 inches and uses a screw-in or bolt-on installation type, consistent with typical outboard ignition coil mounting. It weighs 0.59 pounds and is sold as a single unit. This part is intended as a fit-specific replacement, so buyers should confirm the cross-reference or OEM number against their existing coil 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 18-5172\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Coil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine Brands:\u003c\/strong\u003e Johnson\/Evinrude Outboard Motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Screw-In or Bolt-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.59 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999318435\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e GLM 72030, Evinrude\/Johnson 0581786, 0581370, 0502881, Mallory 9-23106, OMC 581786\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits Johnson\/Evinrude outboard motors that use the OEM coil numbers listed below; confirm against your motor's existing coil number before ordering.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 72030\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 0581786\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 0581370\u003c\/li\u003e\n\u003cli\u003eEvinrude\/Johnson 0502881\u003c\/li\u003e\n\u003cli\u003eMallory 9-23106\u003c\/li\u003e\n\u003cli\u003eOMC 581786\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat motors does the Sierra 18-5172 ignition coil fit?\u003c\/strong\u003e The Sierra 18-5172 is built for Johnson\/Evinrude outboard motors. It is a fit-specific part, so confirm the OEM coil number on your motor matches one of the cross-references before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs GLM 72030 the same part as Sierra 18-5172?\u003c\/strong\u003e Yes, GLM number 72030 cross-references directly to Sierra 18-5172, so either number identifies the same ignition coil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-5172 coil replace?\u003c\/strong\u003e It interchanges with Evinrude\/Johnson 0581786, 0581370, and 0502881, OMC 581786, Mallory 9-23106, and GLM 72030.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-5172 ignition coil?\u003c\/strong\u003e The coil measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5172 ignition coil weigh?\u003c\/strong\u003e It weighs 0.59 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5172 a genuine Sierra part or a generic aftermarket coil?\u003c\/strong\u003e It is a Sierra branded ignition coil manufactured to meet or exceed original equipment quality, not a generic unbranded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-5172 ignition coil installed?\u003c\/strong\u003e It uses a screw-in or bolt-on installation type, matching the mounting style of the original Johnson\/Evinrude coil it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes in the box with the Sierra 18-5172?\u003c\/strong\u003e The listing includes one Sierra 18-5172 marine ignition coil, sold as a single unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5172 ignition coil?\u003c\/strong\u003e The UPC is 030999318435.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Mallory 9-23106 interchangeable with the Sierra 18-5172?\u003c\/strong\u003e Yes, Mallory 9-23106 is listed as an interchangeable number for the Sierra 18-5172 ignition coil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the Sierra 18-5172 compare to the original OMC 581786 coil?\u003c\/strong\u003e The Sierra 18-5172 cross-references directly to OMC 581786 and is manufactured to meet or exceed original equipment quality, making it a direct functional replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-5172 ignition coil have a warranty?\u003c\/strong\u003e Yes, the Sierra 18-5172 is backed by a limited warranty.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988200534235,"sku":"SIE-18-5172","price":42.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/sie-18-5172_lg__24851.1558128692.500.750.jpg?v=1785188172","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-5172-ignition-coil-for-johnson-evinrude-outboard-replaces-omc-581786-502881","provider":"Good Vibes Marina","version":"1.0","type":"link"}