{"product_id":"mercury-quicksilver-water-pump-repair-kit-8m0155395-4-60hp-fourstroke","title":"Mercury Quicksilver Water Pump Repair Kit 8M0155395 — 4–60 HP FourStroke Outboard","description":"\u003ch2\u003eMercury Quicksilver Water Pump Repair Kit — OEM 8M0155395 | 4–60 HP FourStroke Outboard\u003c\/h2\u003e\u003cp\u003eKeep your Mercury FourStroke outboard running cool with this genuine OEM water pump repair kit. Part 8M0155395 contains everything needed to fully rebuild the water pump on selected Mercury 4–60 HP FourStroke outboards built from serial number 0R411838 and up — impeller, key, wear plate, housing, gaskets, and hardware all in one OEM package. Replacing the impeller on schedule is one of the most important things you can do to prevent overheating and engine damage on any outboard.\u003c\/p\u003e\u003ch2\u003ePart Information\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 8M0155395\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury \/ Quicksilver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial Product Type:\u003c\/strong\u003e Water pump \/ impeller repair kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 16159A03\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarlier Related Kit:\u003c\/strong\u003e 16159A1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Range:\u003c\/strong\u003e 0R411838 and above\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Raw-water cooling \/ water pump assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN \/ UPC:\u003c\/strong\u003e 745061116313\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKit Contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWater pump impeller\u003c\/li\u003e\n\u003cli\u003eImpeller drive key\u003c\/li\u003e\n\u003cli\u003eImpeller gaskets\u003c\/li\u003e\n\u003cli\u003eWear plate\u003c\/li\u003e\n\u003cli\u003eWater pump housing \/ cup\u003c\/li\u003e\n\u003cli\u003eHardware and washers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMercury FourStroke 4 HP — serial 0R411838 and up\u003c\/li\u003e\n\u003cli\u003eMercury FourStroke 5 HP — serial 0R411838 and up\u003c\/li\u003e\n\u003cli\u003eMercury FourStroke 6 HP — serial 0R411838 and up\u003c\/li\u003e\n\u003cli\u003eSelected Mercury 4–60 HP FourStroke outboards using this water-pump configuration — serial 0R411838 and up\u003c\/li\u003e\n\u003cli\u003eConfirm engine horsepower and serial number before ordering — engines below serial 0R411838 may require an earlier kit (16159A03 or 16159A1)\u003c\/li\u003e\n\u003cli\u003eThis kit is for Mercury FourStroke outboards only — not for MerCruiser sterndrive water pumps\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAt the scheduled impeller replacement interval (every 2 years or 200 hours, per Mercury owner’s manual)\u003c\/li\u003e\n\u003cli\u003eWhen cooling-water output from the tell-tale is weak or absent\u003c\/li\u003e\n\u003cli\u003eWhen overheating is suspected or a temperature warning has been triggered\u003c\/li\u003e\n\u003cli\u003eWhen the water pump is disassembled for any reason — impeller and gaskets should not be reused\u003c\/li\u003e\n\u003cli\u003eWhen the impeller shows cracking, hardening, missing vanes, or deformation on inspection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eService Interval\u003c\/h2\u003e\u003cp\u003eMercury recommends inspecting and replacing the water pump impeller every 2 years or 200 hours of operation, whichever comes first. Proactive replacement during annual service is strongly recommended — impeller failure is one of the most common causes of outboard overheating.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInspect the driveshaft, water-pump base, housing sealing surfaces, and water tube for wear or damage while the pump is disassembled\u003c\/li\u003e\n\u003cli\u003eInstall the impeller key, gaskets, wear plate, cup, and housing in the correct sequence per the Mercury service manual\u003c\/li\u003e\n\u003cli\u003eConfirm impeller vane orientation — incorrect orientation will result in reduced water flow\u003c\/li\u003e\n\u003cli\u003eFollow Mercury-specified fastener torque values during reassembly\u003c\/li\u003e\n\u003cli\u003eAfter reassembly, verify tell-tale water flow before returning the engine to service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat is the serial number cutoff for this kit?\u003c\/strong\u003e\u003cbr\u003e8M0155395 is specified for Mercury FourStroke outboards from serial 0R411838 and up. Engines below this serial number use an earlier water-pump configuration and require kit 16159A03 or 16159A1. Always confirm the serial number before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include the water pump housing?\u003c\/strong\u003e\u003cbr\u003eYes. The kit includes the impeller, key, wear plate, housing\/cup, gaskets, and hardware — all components required for a complete water pump rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this kit compatible with MerCruiser sterndrives?\u003c\/strong\u003e\u003cbr\u003eNo. This kit is specific to Mercury FourStroke outboards in the 4–60 HP range. MerCruiser sterndrive water pumps use different configurations and part numbers.\u003c\/p\u003e\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\u003cp\u003eWater pump service is one of the most skipped maintenance items on small outboards, and it’s one of the most consequential. The most common scenario is a customer who notices the tell-tale stream has gotten thin or intermittent and waits too long to act — by the time they come in, the impeller vanes have already broken down and debris may have entered the cooling passages. The key fitment point for this kit is the 0R411838 serial break — this catches customers who have an older engine and assume they can order the newest kit. Browse the full \u003ca href=\"\/collections\/mercury-mercruiser-and-quicksilver-cooling-system-parts\"\u003eMercury Cooling System Parts\u003c\/a\u003e collection for thermostats, housings, and related components.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":51324694331428,"sku":"8M0155395","price":91.82,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/f37303f8-6515-4fa4-8687-2f07b79ec4a3.png?v=1788206162","url":"https:\/\/marisolmarine.com\/products\/mercury-quicksilver-water-pump-repair-kit-8m0155395-4-60hp-fourstroke","provider":"Marisol Marine Company","version":"1.0","type":"link"}