{"product_id":"johnson-evinrude-timer-base-for-35-40-50-hp-2-cylinder-outboards-1992-2005-replaces-oem-763808-sierra-18-99418","title":"Sierra 18-99418 Johnson\/Evinrude Timer Base, 2 Cylinder, Replaces 763808 175386, Fits 1992-2005 35\/40\/50 HP","description":"\u003cp\u003eThe Sierra 18-99418 is a 2-cylinder timer base built for Johnson and Evinrude outboards that use a 3-wire timer base with S.L.O.W. (Sensor Low Oil Warning). The timer base is a core ignition component that controls spark timing as the throttle advances, and a worn or failing unit is a common cause of rough idle, misfires, hesitation, or a no-start condition on affected 2-cylinder outboards. This timer base is finished in blue and constructed of metal and plastic components for durability in the marine ignition environment.\u003c\/p\u003e\u003cp\u003eIt is designed as a direct replacement for the OEM timer base on Johnson\/Evinrude 2 cylinder engines rated 35, 40, and 50 HP that were built with the 3-wire, S.L.O.W.-equipped timer base configuration, covering model years 1992 through 2005. Confirm your outboard uses the 3-wire S.L.O.W. Timer base setup before ordering, since Johnson\/Evinrude used multiple timer base wiring configurations across this HP range and era.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-99418\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Ignition System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinders:\u003c\/strong\u003e 2 Cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Configuration:\u003c\/strong\u003e 3-Wire Timer Base with S.L.O.W.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal, Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.7 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude 35, 40, and 50 HP 2 cylinder engines, 1992-2005, using a 3-wire timer base with S.L.O.W.\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e763808\u003c\/li\u003e\n\u003cli\u003e175386\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-99418 timer base fit?\u003c\/strong\u003e This timer base fits Johnson\/Evinrude 2 cylinder outboards rated 35, 40, and 50 HP, model years 1992-2005, that use a 3-wire timer base with S.L.O.W. (Sensor Low Oil Warning).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-99418 replace?\u003c\/strong\u003e The Sierra 18-99418 replaces OEM Johnson\/Evinrude part numbers 763808 and 175386.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this timer base for a 2-cylinder or 3-cylinder outboard?\u003c\/strong\u003e It is built specifically for 2 cylinder Johnson\/Evinrude outboards, not 3-cylinder models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this timer base include the S.L.O.W. Sensor feature?\u003c\/strong\u003e Yes, the 18-99418 is a 3-wire timer base with S.L.O.W. (Sensor Low Oil Warning) built in, matching the OEM wiring configuration on covered engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99418 timer base weigh?\u003c\/strong\u003e The Sierra 18-99418 timer base weighs 0.7 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the timer base made of?\u003c\/strong\u003e It is constructed of metal and plastic components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-99418?\u003c\/strong\u003e This timer base is finished in blue.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate a failing timer base on a Johnson\/Evinrude outboard?\u003c\/strong\u003e Rough idle, misfires, hesitation on acceleration, or a no-start condition can indicate a worn timer base on affected 2-cylinder Johnson\/Evinrude engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this timer base on any 35, 40, or 50 HP Johnson\/Evinrude outboard?\u003c\/strong\u003e Only on 2 cylinder 35, 40, and 50 HP Johnson\/Evinrude engines built with the 3-wire S.L.O.W. Timer base, model years 1992-2005; other wiring configurations used in the same HP range are not compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-99418 a direct OEM replacement?\u003c\/strong\u003e Yes, the Sierra 18-99418 is a direct replacement for OEM timer base numbers 763808 and 175386 on covered Johnson\/Evinrude engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-99418?\u003c\/strong\u003e The order includes one Sierra 18-99418 timer base unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many wires does this timer base use?\u003c\/strong\u003e The 18-99418 uses a 3-wire configuration with S.L.O.W.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988444000475,"sku":"SIE-18-99418","price":342.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-133-5386_lg__69088.1748441818.500.750.jpg?v=1785188098","url":"https:\/\/www.goodvibesmarina.com\/products\/johnson-evinrude-timer-base-for-35-40-50-hp-2-cylinder-outboards-1992-2005-replaces-oem-763808-sierra-18-99418","provider":"Good Vibes Marina","version":"1.0","type":"link"}