{"product_id":"ignition-coil-for-yamaha-55-hp-90-hp-outboards-1984-1994-replaces-697-85570-11-00-sierra-18-5111","title":"Sierra Ignition Coil 18-5111, Replaces 697-85570-11-00, for Yamaha 55 HP (1989-94) and 90 HP (1984-88) Outboards","description":"\u003cp\u003eThe Sierra 18-5111 is a replacement ignition coil engineered to meet or exceed OE manufacturer specifications for quality and performance in Yamaha outboard ignition systems. It is built as a sealed unit using a high temperature dielectric epoxy that resists moisture intrusion and thermal breakdown, two of the most common causes of ignition coil failure in a marine engine bay. Sierra constructs the coil from high grade materials for extended service life under the vibration, heat, and moisture exposure typical of outboard operation.\u003c\/p\u003e\u003cp\u003eThis coil is a direct fit for Yamaha 55 HP (2 cylinder) outboards from 1989 to 1994 and Yamaha 90 HP outboards from 1984 to 1988, and it cross-references directly to OEM part number 697-85570-11-00. It uses a male connector for installation into the existing ignition harness. Boat owners and marine technicians use the 18-5111 to restore reliable spark and consistent engine starting when an original coil weakens, cracks, or fails a resistance test.\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 18-5111\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Coil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.7 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 747730043616\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Gender:\u003c\/strong\u003e Male\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Coil pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 12.8 centimeters x 6.8 centimeters x 11.4 centimeters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYamaha 55 HP (2 cylinder), 1989-94\u003c\/li\u003e\n\u003cli\u003eYamaha 90 HP, 1984-88\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e697-85570-11-00\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5111 ignition coil fit?\u003c\/strong\u003e The Sierra 18-5111 fits Yamaha 55 HP (2 cylinder) outboards from 1989 to 1994 and Yamaha 90 HP outboards from 1984 to 1988.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5111 a direct replacement for OEM part 697-85570-11-00?\u003c\/strong\u003e Yes, the Sierra 18-5111 directly cross-references to and replaces Yamaha OEM ignition coil 697-85570-11-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5111 ignition coil weigh?\u003c\/strong\u003e It weighs 0.7 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat connector type does this ignition coil use?\u003c\/strong\u003e The 18-5111 uses a male connector for installation into the ignition harness.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5111?\u003c\/strong\u003e The UPC for the Sierra 18-5111 ignition coil is 747730043616.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this coil work on a Yamaha 90 HP from a different year range?\u003c\/strong\u003e The 18-5111 is confirmed for Yamaha 90 HP outboards from 1984 to 1988; fitment outside that range is not confirmed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material protects the 18-5111 from moisture and heat?\u003c\/strong\u003e A high temperature dielectric epoxy seals the coil to prevent moisture intrusion and thermal breakdown.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5111 an OEM part or aftermarket?\u003c\/strong\u003e The 18-5111 is a Sierra-brand aftermarket ignition coil engineered to meet or exceed OE manufacturer specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of installation does the 18-5111 use?\u003c\/strong\u003e It is a coil pack style ignition coil designed for direct installation in place of the original unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-5111?\u003c\/strong\u003e The Sierra 18-5111 ships in packaging measuring 12.8 centimeters by 6.8 centimeters by 11.4 centimeters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5111 fit a 2 cylinder Yamaha 55 HP engine?\u003c\/strong\u003e Yes, it is designed for the Yamaha 55 HP 2 cylinder outboard produced from 1989 to 1994.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many coils are included with part number 18-5111?\u003c\/strong\u003e The 18-5111 is sold as a single ignition coil unit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988199485659,"sku":"SIE-18-5111","price":83.81,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5111_lg__92833.1558127590.500.750.jpg?v=1785187979","url":"https:\/\/www.goodvibesmarina.com\/products\/ignition-coil-for-yamaha-55-hp-90-hp-outboards-1984-1994-replaces-697-85570-11-00-sierra-18-5111","provider":"Good Vibes Marina","version":"1.0","type":"link"}