{"product_id":"16159a1-water-pump-impeller-repair-kit-for-mercury-4-5-6-hp-reliable","title":"16159A1 Water Pump Impeller Repair Kit for Mercury 4 5 6 HP - Reliable","description":"\u003cp\u003eIn this review the 16159A1 Water Pump Impeller Repair Kit is judged on fit, completeness and ease of installation for small outboard engines. It is aimed at owners of Mercury 4HP, 5HP and 6HP motors and compatible Nissan Tohatsu MFS models who need a full rebuild of the lower unit water pump. The single biggest reason to buy is the complete set of replacement parts included in one package, allowing a thorough rebuild without separate parts hunting and getting the engine operational again.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete rebuild set:\u003c\/strong\u003e The kit contains an impeller, driveshaft pin, cup liner, wear plate, gaskets, bolts and washers so a full water pump service can be done in one job.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide compatibility:\u003c\/strong\u003e It fits Mercury 4HP 5HP 6HP models and Nissan Tohatsu MFS 4 5 6 HP pumps, making it useful for multiple small outboards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM cross reference:\u003c\/strong\u003e The kit covers Mercury part numbers such as 16159A03 and 16159A1 and Tohatsu part numbers like 369873221M, helping ensure correct fit when replacing worn components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestores cooling reliability:\u003c\/strong\u003e Replacing the impeller and wear components refreshes water flow and reduces the risk of overheating during operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValue for money:\u003c\/strong\u003e Customers report the parts match original dimensions and return engines to service without needing extra purchases.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is for boat owners, DIY mechanics and small repair shops that maintain Mercury 4, 5 and 6 HP outboards or Nissan Tohatsu MFS 4-6 HP engines and prefer to perform a full water pump rebuild themselves. It suits anyone who wants the convenience of a matched set of parts so they can replace the impeller, liner, wear plate and fasteners in one service interval.\u003c\/p\u003e\n\u003cp\u003eIt is not for larger outboard owners or for engines outside the listed horsepower and part number range; those users should verify compatibility or seek a kit specific to their model. Professional technicians working on a wider range of models may also prefer OEM individual parts when exact factory sourcing is required.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete collection of parts included so the water pump rebuild requires no extra components.\u003c\/li\u003e\n\u003cli\u003eGood fit to the listed Mercury and Tohatsu part numbers, matching original dimensions for a dependable repair.\u003c\/li\u003e\n\u003cli\u003eCustomers report restored engine cooling and immediate return to service after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatibility is limited to specific Mercury and Tohatsu 4-6 HP models, so users must check part numbers before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eWater pump impeller repair kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible brands\u003c\/td\u003e\n\u003ctd\u003eMercury, Nissan Tohatsu\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower fit\u003c\/td\u003e\n\u003ctd\u003e4 HP, 5 HP, 6 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded parts\u003c\/td\u003e\n\u003ctd\u003eImpeller, driveshaft pin, cup liner, wear plate, gaskets, bolts, washers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury part numbers\u003c\/td\u003e\n\u003ctd\u003e16159A03, 16159T01, 16159A1, 8M0155395\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu part numbers\u003c\/td\u003e\n\u003ctd\u003e369873220, 369873221M, 369-87322-1, 369873222\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 16159A1 water pump impeller repair kit is a practical, cost-effective solution for owners of Mercury and Nissan Tohatsu 4-6 HP outboards who need a complete pump rebuild. It delivers the essential parts in one package, fits the referenced part numbers, and restores cooling performance without extra sourcing, making it a sensible buy for DIY maintenance and routine service intervals.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this kit fit a Mercury 5 HP outboard?\u003c\/strong\u003e\u003cbr\u003eYes, it is specified to fit Mercury 4HP, 5HP and 6HP motor models when the part numbers match.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the package include gaskets and hardware?\u003c\/strong\u003e\u003cbr\u003eYes, the kit contains gaskets, bolts and washers in addition to the impeller, driveshaft pin, cup liner and wear plate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this compatible with Tohatsu MFS engines?\u003c\/strong\u003e\u003cbr\u003eIt fits Tohatsu MFS 4, 5 and 6 HP water pumps that use the listed 36987322x part numbers.\u003c\/p\u003e","brand":"QUICKMARINER","offers":[{"title":"Default Title","offer_id":48636728279259,"sku":"B0DD34V7H9","price":49.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51dwTayKrhL._AC.jpg?v=1778740395","url":"https:\/\/gearmusthave.com\/products\/16159a1-water-pump-impeller-repair-kit-for-mercury-4-5-6-hp-reliable","provider":"GearMustHave","version":"1.0","type":"link"}