{"product_id":"sierra-18-99446-2-cylinder-ignition-trigger-for-mercury-mariner-force-outboards-replaces-mercury-855744a2-40-50-hp-1996-1999","title":"Sierra Ignition Trigger 18-99446 for 2-Cylinder Chrysler, Force, Gamefisher 40 HP and 50 HP Outboards","description":"\u003cp\u003eThe Sierra 18-99446 is a 2-cylinder ignition trigger built as a direct replacement for the trigger assembly on select Chrysler, Force, and Gamefisher outboards. The trigger is a core component of the ignition system, generating the timing signal that tells the ignition module when to fire each cylinder. A worn, cracked, or intermittently failing trigger commonly causes hard starting, missing, stalling, or a total no-spark condition, and replacing it with a properly matched unit restores correct ignition timing and reliable starting.\u003c\/p\u003e\u003cp\u003eThis trigger is designed for 2-cylinder outboard powerheads and is supplied as the trigger component only; it does not include the linkage bushing or ball, so buyers who also need those parts should plan to source them separately. It is built to match the OEM electrical and mechanical specifications of the original Mercury trigger it replaces, so it installs using the existing linkage and wiring without modification.\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 18-99446\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Trigger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinders:\u003c\/strong\u003e 2-Cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.6 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282396305\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Trigger assembly only (linkage bushing and ball not included)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eChrysler, Force, Gamefisher 40 HP, 1996-1997\u003c\/li\u003e\n\u003cli\u003eChrysler, Force, Gamefisher 40 HP, 1998-1999\u003c\/li\u003e\n\u003cli\u003eChrysler, Force, Gamefisher 50 HP, 1996-1997\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury 828301\u003c\/li\u003e\n\u003cli\u003eMercury 854509\u003c\/li\u003e\n\u003cli\u003eMercury 854509A9\u003c\/li\u003e\n\u003cli\u003eMercury 855744A2\u003c\/li\u003e\n\u003cli\u003eMercury 855744A11\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-99446 trigger fit?\u003c\/strong\u003e The Sierra 18-99446 fits 2-cylinder Chrysler, Force, and Gamefisher outboards, specifically the 40 HP models from 1996-1997 and 1998-1999, and the 50 HP models from 1996-1997.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99446 trigger include the linkage bushing and ball?\u003c\/strong\u003e No. The 18-99446 trigger is supplied as the trigger component only and does not include the linkage bushing or ball, so those parts need to be sourced separately if needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM Mercury part numbers does the 18-99446 replace?\u003c\/strong\u003e It replaces Mercury 828301, 854509, 854509A9, 855744A2, and 855744A11.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this trigger compatible with my Mercury outboard?\u003c\/strong\u003e The 18-99446 is cross-referenced to replace several Mercury OEM trigger numbers (828301, 854509, 854509A9, 855744A2, 855744A11), so it fits applications originally equipped with those parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many cylinders is the 18-99446 trigger designed for?\u003c\/strong\u003e It is a 2-cylinder trigger, matching the ignition configuration of 2-cylinder Chrysler, Force, and Gamefisher outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate a failing ignition trigger?\u003c\/strong\u003e Hard starting, engine missing, intermittent stalling, or a complete loss of spark are common symptoms of a worn or failing trigger like the one replaced by the 18-99446.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99446 trigger weigh?\u003c\/strong\u003e The Sierra 18-99446 trigger weighs 0.6 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-99446 fit a 1998 40 HP Force outboard?\u003c\/strong\u003e Yes, it is fitted for Chrysler, Force, and Gamefisher 40 HP outboards from 1998-1999.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this trigger be used on a 50 HP model?\u003c\/strong\u003e Yes, the 18-99446 fits Chrysler, Force, and Gamefisher 50 HP outboards from 1996-1997.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-99446 trigger?\u003c\/strong\u003e The UPC for the Sierra 18-99446 ignition trigger is 808282396305.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988444393691,"sku":"SIE-18-99446","price":151.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-134-5744-2_lg__56218.1558112965.500.750.jpg?v=1785188237","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-99446-2-cylinder-ignition-trigger-for-mercury-mariner-force-outboards-replaces-mercury-855744a2-40-50-hp-1996-1999","provider":"Good Vibes Marina","version":"1.0","type":"link"}