{"product_id":"distributor-trigger-for-mercury-mariner-outboard-replaces-393-3736-fits-90-110-115-135-140-150-hp-6-cyl-1967-1979-80-85-hp-4-cyl-1969-1975","title":"Sierra 18-99430 Distributor Trigger Housing, Replaces 393-3736 - Fits Mercury Mariner 80-150 HP 4\/6 Cylinder Outboards","description":"\u003cp\u003eThe Sierra 18-99430 is a distributor trigger housing built for Mercury and Mariner outboard motors equipped with battery powered distributors. This housing is a wear item in the ignition triggering system, and a cracked, worn, or failed unit can cause misfires, hard starting, or a no-spark condition. Replacing it with the Sierra 18-99430 restores proper distributor timing signal generation so the ignition system fires correctly across the RPM range.\u003c\/p\u003e\u003cp\u003eIt is designed to fit Mercury\/Mariner 80 and 85 HP 4 cylinder outboards and 90, 110, 115, 135, 140, and 150 HP 6 cylinder outboards that use a battery powered distributor setup. The housing is a direct cross-reference for multiple Mercury OEM part numbers, making it a straightforward like-for-like replacement for the factory unit. It mounts to the engine as part of the distributor assembly and is finished for durability in a marine engine bay environment.\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 18-99430\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.6 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Multicolored\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e Marine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Engine Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Horsepower:\u003c\/strong\u003e 150 Horsepower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e Repair or replacement of Mercury\/Mariner outboard motor distributor trigger housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 332-4177, 332-4177A 3, 393-3736A79, 393-3736, 393-3736A 3, 393-3736A23, 393-3736A77\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury\/Mariner 80 and 85 HP (4 cylinder), 1969-1975, with battery powered distributor\u003c\/li\u003e\n\u003cli\u003eMercury\/Mariner 90, 110, 115, 135, 140, and 150 HP (6 cylinder), 1967-1979, with battery powered distributor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e332-4177\u003c\/li\u003e\n\u003cli\u003e332-4177A 3\u003c\/li\u003e\n\u003cli\u003e393-3736A79\u003c\/li\u003e\n\u003cli\u003e393-3736\u003c\/li\u003e\n\u003cli\u003e393-3736A 3\u003c\/li\u003e\n\u003cli\u003e393-3736A23\u003c\/li\u003e\n\u003cli\u003e393-3736A77\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99430 distributor trigger housing fit?\u003c\/strong\u003e It fits Mercury\/Mariner 80 and 85 HP 4 cylinder outboards from 1969-1975, and Mercury\/Mariner 90, 110, 115, 135, 140, and 150 HP 6 cylinder outboards from 1967-1979, specifically those equipped with a battery powered distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does the 18-99430 replace?\u003c\/strong\u003e The Sierra 18-99430 cross-references to Mercury OEM numbers 332-4177, 332-4177A 3, 393-3736A79, 393-3736, 393-3736A 3, 393-3736A23, and 393-3736A77.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the correct part for a non-battery powered distributor?\u003c\/strong\u003e No. The Sierra 18-99430 is designed specifically for Mercury\/Mariner engines with a battery powered distributor, so confirm your distributor type before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99430 trigger housing weigh?\u003c\/strong\u003e The Sierra 18-99430 distributor trigger housing weighs 1.6 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the housing?\u003c\/strong\u003e The Sierra 18-99430 is finished in a multicolored appearance as supplied.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-99430 work on both 4 cylinder and 6 cylinder Mercury outboards?\u003c\/strong\u003e Yes, one housing covers both the 80\/85 HP 4 cylinder range and the 90-150 HP 6 cylinder range, as long as the engine uses a battery powered distributor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-99430 a genuine Mercury part or an aftermarket replacement?\u003c\/strong\u003e It is a Sierra branded replacement part, not a Mercury branded original, but it is built to match the fit and function of the OEM housing it cross-references.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate the trigger housing needs replacement?\u003c\/strong\u003e Misfires, hard starting, or a no-spark condition on a Mercury\/Mariner outboard with a battery powered distributor can point to a worn or failed distributor trigger housing like the 18-99430.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99430 include mounting hardware or a full distributor?\u003c\/strong\u003e The Sierra 18-99430 is the distributor trigger housing component itself; check your engine's assembly to confirm what additional hardware or components you already have.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-99430 as a direct swap for my old housing without other modifications?\u003c\/strong\u003e Since the 18-99430 cross-references the original Mercury housing numbers for your engine, it is intended as a direct fit replacement on the applicable 80-150 HP battery powered distributor engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988443902171,"sku":"SIE-18-99430","price":599.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-134-3736_lg__78179.1558112559.500.750.jpg?v=1785188099","url":"https:\/\/www.goodvibesmarina.com\/products\/distributor-trigger-for-mercury-mariner-outboard-replaces-393-3736-fits-90-110-115-135-140-150-hp-6-cyl-1967-1979-80-85-hp-4-cyl-1969-1975","provider":"Good Vibes Marina","version":"1.0","type":"link"}