{"product_id":"johnson-evinrude-timer-base-4-cyl-replaces-oem-583508-763782-fits-1988-2001-120-140-hp-loop-charged-outboards","title":"Sierra 18-99425 Timer Base for Johnson\/Evinrude 4-Cyl Loop Charged Outboards, 1988-2001, 120-140 HP, Replaces 763782","description":"\u003cp\u003eThe Sierra 18-99425 is a timer base assembly for the ignition system of 1988-2001 Johnson\/Evinrude 4 cylinder loop charged outboard engines equipped with Quick Start and S.L.O.W. Features, covering the 120, 125, 130, 135, and 140 HP models. The timer base is a core ignition timing component that works with the engine's electronic ignition system to help maintain correct spark timing across the engine's operating range. It is constructed of metal for durability in the marine engine compartment environment. This part is built as a direct fit for the listed engine range, allowing it to be installed in place of the original equipment timer base without modification to the surrounding ignition components. It cross-references to OEM part numbers 763782 and 583508, so buyers can confirm compatibility using either of those numbers in addition to the Sierra 18-99425 part number. At 0.9 pounds and measuring 1 inch by 1 inch by 1 inch, it is a compact component designed to mount within the existing ignition housing of the covered outboard models.\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 18-99425\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Timer Base (Ignition System)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 1 inch x 1 inch x 1 inch (D x W x H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.9 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e Johnson\/Evinrude 4 cylinder loop charged engines with Quick Start and S.L.O.W.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower Range:\u003c\/strong\u003e 120, 125, 130, 135, and 140 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Years:\u003c\/strong\u003e 1988-2001\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 763782, 583508\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude 4 cylinder loop charged outboard engines with Quick Start and S.L.O.W., 1988-2001, 120, 125, 130, 135, and 140 HP\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e763782\u003c\/li\u003e\n\u003cli\u003e583508\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99425 timer base fit?\u003c\/strong\u003e The Sierra 18-99425 fits 1988-2001 Johnson\/Evinrude 4 cylinder loop charged outboard engines equipped with Quick Start and S.L.O.W., covering the 120, 125, 130, 135, and 140 HP models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-99425 timer base replace?\u003c\/strong\u003e It replaces OEM part numbers 763782 and 583508, so either of those numbers can be used to confirm the correct fit before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the timer base made of?\u003c\/strong\u003e The 18-99425 timer base is constructed of metal, suited to the operating environment inside an outboard's ignition housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow big is the Sierra 18-99425 timer base?\u003c\/strong\u003e It measures 1 inch by 1 inch by 1 inch (depth x width x height).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99425 timer base weigh?\u003c\/strong\u003e It weighs 0.9 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does a timer base do in an outboard ignition system?\u003c\/strong\u003e A timer base such as the 18-99425 is a core component of the engine's electronic ignition system, working to help maintain correct spark timing as the engine runs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99425 support Quick Start and S.L.O.W. Ignition features?\u003c\/strong\u003e Yes, the 18-99425 is designed for engines equipped with Quick Start and S.L.O.W., which are features found on the covered 1988-2001 4 cylinder loop charged Johnson\/Evinrude engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-99425 be installed in place of the original timer base without other changes?\u003c\/strong\u003e Yes, the Sierra 18-99425 is built as a direct fit for its listed engine range and cross-references to OEM numbers 763782 and 583508, allowing installation in place of the original timer base.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-99425 a genuine Sierra part?\u003c\/strong\u003e Yes, part number 18-99425 is a Sierra manufacturer part number for the timer base assembly covering the listed Johnson\/Evinrude 4 cylinder engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988443541723,"sku":"SIE-18-99425","price":319.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-133-3508_lg__59989.1722493370.500.750.jpg?v=1785188078","url":"https:\/\/www.goodvibesmarina.com\/products\/johnson-evinrude-timer-base-4-cyl-replaces-oem-583508-763782-fits-1988-2001-120-140-hp-loop-charged-outboards","provider":"Good Vibes Marina","version":"1.0","type":"link"}