{"product_id":"mercury-mercruiser-water-shutter-2-98-inch-diameter-807166a2","title":"Mercury – Quicksilver Exhaust Water Shutter Kit | For Select MerCruiser Sterndrive Engines | 807166A2","description":"\u003cp data-start=\"0\" data-end=\"107\"\u003e\u003cstrong data-start=\"0\" data-end=\"105\"\u003eMercury – Quicksilver Exhaust Water Shutter Kit | For Select MerCruiser Sterndrive Engines | 807166A2\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"109\" data-end=\"112\"\u003e\n\u003ch3 data-start=\"114\" data-end=\"132\"\u003e\u003cstrong data-start=\"118\" data-end=\"130\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"133\" data-end=\"670\"\u003eWhen your boat’s sitting still or idling in rough water, the last thing you want is seawater creeping back into your engine. The \u003cstrong data-start=\"262\" data-end=\"327\"\u003eMercury Marine 807166A2 Quicksilver Exhaust Water Shutter Kit\u003c\/strong\u003e stops that from happening. Designed for \u003cstrong data-start=\"368\" data-end=\"446\"\u003eMerCruiser sterndrives with Y-pipes measuring 2.98 inches at the cross pin\u003c\/strong\u003e, this kit acts as a one-way valve — letting exhaust exit freely while blocking water from coming back in. It’s a small part that plays a big role in keeping your engine protected and ready for another season on the water.\u003c\/p\u003e\n\u003chr data-start=\"672\" data-end=\"675\"\u003e\n\u003ch3 data-start=\"677\" data-end=\"699\"\u003e\u003cstrong data-start=\"681\" data-end=\"697\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"702\" data-end=\"796\"\u003e\n\u003cstrong data-start=\"702\" data-end=\"714\"\u003ePurpose:\u003c\/strong\u003e Prevents water from backing up into the exhaust system and reaching the engine.\u003c\/li\u003e\n\u003cli data-start=\"799\" data-end=\"897\"\u003e\n\u003cstrong data-start=\"799\" data-end=\"810\"\u003eDesign:\u003c\/strong\u003e Built for \u003cstrong data-start=\"821\" data-end=\"854\"\u003eMerCruiser sterndrive Y-pipes\u003c\/strong\u003e with a \u003cstrong data-start=\"862\" data-end=\"894\"\u003e2.98-inch cross pin diameter\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"900\" data-end=\"996\"\u003e\n\u003cstrong data-start=\"900\" data-end=\"916\"\u003ePerformance:\u003c\/strong\u003e Functions as a check valve — opens for exhaust flow, closes against backwash.\u003c\/li\u003e\n\u003cli data-start=\"999\" data-end=\"1097\"\u003e\n\u003cstrong data-start=\"999\" data-end=\"1014\"\u003eDurability:\u003c\/strong\u003e Made from \u003cstrong data-start=\"1025\" data-end=\"1063\"\u003eheat- and salt-resistant materials\u003c\/strong\u003e that handle high exhaust temps.\u003c\/li\u003e\n\u003cli data-start=\"1100\" data-end=\"1163\"\u003e\n\u003cstrong data-start=\"1100\" data-end=\"1116\"\u003eEase of Use:\u003c\/strong\u003e Simple to install using standard hand tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1165\" data-end=\"1168\"\u003e\n\u003ch3 data-start=\"1170\" data-end=\"1207\"\u003e\u003cstrong data-start=\"1174\" data-end=\"1205\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1210\" data-end=\"1245\"\u003e\u003cstrong data-start=\"1210\" data-end=\"1243\"\u003eMerCruiser sterndrive engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1248\" data-end=\"1342\"\u003eY-pipes with \u003cstrong data-start=\"1261\" data-end=\"1300\"\u003e2.98-inch diameter at the hinge pin\u003c\/strong\u003e (check your service manual for fitment)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1344\" data-end=\"1347\"\u003e\n\u003ch3 data-start=\"1349\" data-end=\"1392\"\u003e\u003cstrong data-start=\"1353\" data-end=\"1390\"\u003ePerformance \u0026amp; Real-World Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1393\" data-end=\"1759\"\u003eThe \u003cstrong data-start=\"1397\" data-end=\"1431\"\u003e807166A2 exhaust water shutter\u003c\/strong\u003e is one of those unseen components that quietly does critical work. When your boat slows down, stops, or gets hit by following seas, this shutter closes automatically, preventing backwash from entering the exhaust and damaging your engine. Without it, water can flood into the cylinders, causing rust, hydro-locking, or worse.\u003c\/p\u003e\n\u003cp data-start=\"1761\" data-end=\"2035\"\u003eBuilt with heavy-duty materials that resist heat, corrosion, and vibration, this OEM shutter stands up to years of service. It installs easily and provides peace of mind every time you head out — because you’ll know your engine’s protected, even when the water gets rough.\u003c\/p\u003e\n\u003chr data-start=\"2037\" data-end=\"2040\"\u003e\n\u003ch3 data-start=\"2042\" data-end=\"2074\"\u003e\u003cstrong data-start=\"2046\" data-end=\"2072\"\u003eWhy Choose Mercury OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2075\" data-end=\"2329\"\u003eThe \u003cstrong data-start=\"2079\" data-end=\"2103\"\u003eQuicksilver 807166A2\u003c\/strong\u003e is a \u003cstrong data-start=\"2109\" data-end=\"2140\"\u003egenuine Mercury Marine part\u003c\/strong\u003e, designed specifically for MerCruiser exhaust systems. Aftermarket versions can have poor tolerances or materials that degrade quickly in heat and saltwater, leading to leaks or failure.\u003c\/p\u003e\n\u003cp data-start=\"2331\" data-end=\"2552\"\u003eMercury OEM shutters are built and tested under real marine conditions, ensuring reliable performance and perfect fit. It’s the same part Mercury uses on new sterndrives — trusted by technicians and boat builders alike.\u003c\/p\u003e\n\u003chr data-start=\"2554\" data-end=\"2557\"\u003e\n\u003ch3 data-start=\"2559\" data-end=\"2572\"\u003e\u003cstrong data-start=\"2563\" data-end=\"2570\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2574\" data-end=\"2705\"\u003e\u003cstrong data-start=\"2574\" data-end=\"2604\"\u003eQ1: What does this kit do?\u003c\/strong\u003e\u003cbr data-start=\"2604\" data-end=\"2607\"\u003eIt prevents water from flowing back through the exhaust into the engine when idling or shut off.\u003c\/p\u003e\n\u003cp data-start=\"2707\" data-end=\"2825\"\u003e\u003cstrong data-start=\"2707\" data-end=\"2739\"\u003eQ2: What drives does it fit?\u003c\/strong\u003e\u003cbr data-start=\"2739\" data-end=\"2742\"\u003eIt fits \u003cstrong data-start=\"2750\" data-end=\"2776\"\u003eMerCruiser sterndrives\u003c\/strong\u003e with \u003cstrong data-start=\"2782\" data-end=\"2822\"\u003e2.98-inch Y-pipe cross pin diameters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2827\" data-end=\"2956\"\u003e\u003cstrong data-start=\"2827\" data-end=\"2862\"\u003eQ3: When should it be replaced?\u003c\/strong\u003e\u003cbr data-start=\"2862\" data-end=\"2865\"\u003eReplace it if it’s \u003cstrong data-start=\"2884\" data-end=\"2915\"\u003ecracked, warped, or missing\u003c\/strong\u003e — or during major exhaust maintenance.\u003c\/p\u003e\n\u003cp data-start=\"2958\" data-end=\"3069\"\u003e\u003cstrong data-start=\"2958\" data-end=\"2990\"\u003eQ4: Can I install it myself?\u003c\/strong\u003e\u003cbr data-start=\"2990\" data-end=\"2993\"\u003eYes — it’s a \u003cstrong data-start=\"3006\" data-end=\"3038\"\u003estraightforward installation\u003c\/strong\u003e that only needs basic tools.\u003c\/p\u003e\n\u003cp data-start=\"3071\" data-end=\"3213\"\u003e\u003cstrong data-start=\"3071\" data-end=\"3099\"\u003eQ5: Why use Mercury OEM?\u003c\/strong\u003e\u003cbr data-start=\"3099\" data-end=\"3102\"\u003eBecause \u003cstrong data-start=\"3110\" data-end=\"3131\"\u003eMercury OEM parts\u003c\/strong\u003e are made for exact fit and long-term reliability under real boating conditions.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936191566115,"sku":"807166A2","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/807166A2_main.jpg?v=1760631225","url":"https:\/\/partsvu.com\/en-au\/products\/mercury-mercruiser-water-shutter-2-98-inch-diameter-807166a2","provider":"PartsVu","version":"1.0","type":"link"}