{"product_id":"mercury-mercruiser-water-shutter-2-48-inch-diameter-807166a1","title":"Mercury – Quicksilver Water Shutter | For Select MerCruiser Sterndrive Engines | 807166A1","description":"\u003cp data-start=\"0\" data-end=\"95\"\u003e\u003cstrong data-start=\"0\" data-end=\"93\"\u003eMercury – Quicksilver Water Shutter | For Select MerCruiser Sterndrive Engines | 807166A1\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"97\" data-end=\"100\"\u003e\n\u003ch3 data-start=\"102\" data-end=\"120\"\u003e\u003cstrong data-start=\"106\" data-end=\"118\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"121\" data-end=\"699\"\u003eA small part with a big job, the \u003cstrong data-start=\"154\" data-end=\"207\"\u003eMercury Marine 807166A1 Quicksilver Water Shutter\u003c\/strong\u003e helps keep water where it belongs — out of your engine. Designed for \u003cstrong data-start=\"277\" data-end=\"329\"\u003eselect MerCruiser sterndrive and inboard engines\u003c\/strong\u003e, this shutter sits inside the exhaust system and acts like a one-way valve. When your engine is running, it allows exhaust gases to flow freely. When it’s idling, off, or facing rough water, it swings shut to prevent backflow from following seas or wakes that could flood your cylinders. It’s a simple, reliable safeguard that protects your engine from costly damage.\u003c\/p\u003e\n\u003chr data-start=\"701\" data-end=\"704\"\u003e\n\u003ch3 data-start=\"706\" data-end=\"728\"\u003e\u003cstrong data-start=\"710\" data-end=\"726\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"731\" data-end=\"837\"\u003e\n\u003cstrong data-start=\"731\" data-end=\"743\"\u003ePurpose:\u003c\/strong\u003e Prevents water from backing up into the exhaust and engine when the motor is off or idling.\u003c\/li\u003e\n\u003cli data-start=\"840\" data-end=\"935\"\u003e\n\u003cstrong data-start=\"840\" data-end=\"851\"\u003eDesign:\u003c\/strong\u003e Acts as a flexible check valve for exhaust systems in \u003cstrong data-start=\"906\" data-end=\"932\"\u003eMerCruiser sterndrives\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"938\" data-end=\"1006\"\u003e\n\u003cstrong data-start=\"938\" data-end=\"947\"\u003eSize:\u003c\/strong\u003e Features a \u003cstrong data-start=\"959\" data-end=\"1003\"\u003e2.48-inch diameter cross pin (hinge pin)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"1009\" data-end=\"1120\"\u003e\n\u003cstrong data-start=\"1009\" data-end=\"1026\"\u003eConstruction:\u003c\/strong\u003e Built from \u003cstrong data-start=\"1038\" data-end=\"1075\"\u003edurable, heat-resistant materials\u003c\/strong\u003e that withstand exhaust heat and vibration.\u003c\/li\u003e\n\u003cli data-start=\"1123\" data-end=\"1198\"\u003e\n\u003cstrong data-start=\"1123\" data-end=\"1135\"\u003eFitment:\u003c\/strong\u003e Direct OEM replacement for consistent, reliable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1200\" data-end=\"1203\"\u003e\n\u003ch3 data-start=\"1205\" data-end=\"1242\"\u003e\u003cstrong data-start=\"1209\" data-end=\"1240\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1245\" data-end=\"1358\"\u003e\n\u003cstrong data-start=\"1245\" data-end=\"1297\"\u003eSelect MerCruiser sterndrive and inboard engines\u003c\/strong\u003e (see owner’s manual or service manual for fitment details)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1360\" data-end=\"1363\"\u003e\n\u003ch3 data-start=\"1365\" data-end=\"1408\"\u003e\u003cstrong data-start=\"1369\" data-end=\"1406\"\u003ePerformance \u0026amp; Real-World Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1409\" data-end=\"1778\"\u003eThe \u003cstrong data-start=\"1413\" data-end=\"1439\"\u003e807166A1 water shutter\u003c\/strong\u003e does one thing but does it exceptionally well — it protects your engine from backwash. If water ever gets pushed up through the exhaust system, it can flow into the cylinders, causing hydrolock or internal rust damage. This small shutter swings into action when your engine slows down or shuts off, blocking that reverse flow instantly.\u003c\/p\u003e\n\u003cp data-start=\"1780\" data-end=\"2045\"\u003eMade from marine-grade materials that resist exhaust heat and saltwater exposure, it’s built to handle years of use. When it’s working properly, you won’t even notice it — but your engine will thank you every time you head back down the wake or face choppy water.\u003c\/p\u003e\n\u003chr data-start=\"2047\" data-end=\"2050\"\u003e\n\u003ch3 data-start=\"2052\" data-end=\"2084\"\u003e\u003cstrong data-start=\"2056\" data-end=\"2082\"\u003eWhy Choose Mercury OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2085\" data-end=\"2373\"\u003eThe \u003cstrong data-start=\"2089\" data-end=\"2113\"\u003eQuicksilver 807166A1\u003c\/strong\u003e is a \u003cstrong data-start=\"2119\" data-end=\"2150\"\u003egenuine Mercury Marine part\u003c\/strong\u003e, designed and tested for the exact flow rates, temperatures, and angles of MerCruiser exhaust systems. Aftermarket shutters may not seal correctly or could degrade quickly from heat exposure, putting your engine at risk.\u003c\/p\u003e\n\u003cp data-start=\"2375\" data-end=\"2627\"\u003eMercury’s OEM components are built to the same standards used in factory-installed parts — ensuring precise fit, reliable sealing, and long-lasting durability. It’s the level of protection that only the people who built your engine can truly deliver.\u003c\/p\u003e\n\u003chr data-start=\"2629\" data-end=\"2632\"\u003e\n\u003ch3 data-start=\"2634\" data-end=\"2647\"\u003e\u003cstrong data-start=\"2638\" data-end=\"2645\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2649\" data-end=\"2786\"\u003e\u003cstrong data-start=\"2649\" data-end=\"2686\"\u003eQ1: What does a water shutter do?\u003c\/strong\u003e\u003cbr data-start=\"2686\" data-end=\"2689\"\u003eIt prevents water from flowing backward through the exhaust into the engine when idling or off.\u003c\/p\u003e\n\u003cp data-start=\"2788\" data-end=\"2882\"\u003e\u003cstrong data-start=\"2788\" data-end=\"2820\"\u003eQ2: What’s the shutter size?\u003c\/strong\u003e\u003cbr data-start=\"2820\" data-end=\"2823\"\u003eIt measures \u003cstrong data-start=\"2835\" data-end=\"2879\"\u003e2.48 inches in diameter at the hinge pin\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2884\" data-end=\"3025\"\u003e\u003cstrong data-start=\"2884\" data-end=\"2917\"\u003eQ3: What engines does it fit?\u003c\/strong\u003e\u003cbr data-start=\"2917\" data-end=\"2920\"\u003eIt’s designed for \u003cstrong data-start=\"2938\" data-end=\"2990\"\u003eselect MerCruiser sterndrive and inboard engines\u003c\/strong\u003e — check your manual for details.\u003c\/p\u003e\n\u003cp data-start=\"3027\" data-end=\"3176\"\u003e\u003cstrong data-start=\"3027\" data-end=\"3060\"\u003eQ4: When should I replace it?\u003c\/strong\u003e\u003cbr data-start=\"3060\" data-end=\"3063\"\u003eReplace it if it’s \u003cstrong data-start=\"3082\" data-end=\"3132\"\u003ecracked, warped, or no longer sealing properly\u003c\/strong\u003e — typically during major exhaust service.\u003c\/p\u003e\n\u003cp data-start=\"3178\" data-end=\"3372\"\u003e\u003cstrong data-start=\"3178\" data-end=\"3217\"\u003eQ5: Why OEM instead of aftermarket?\u003c\/strong\u003e\u003cbr data-start=\"3217\" data-end=\"3220\"\u003eBecause \u003cstrong data-start=\"3228\" data-end=\"3252\"\u003eMercury OEM shutters\u003c\/strong\u003e are built to precise tolerances and materials that resist exhaust heat and saltwater, ensuring long-term reliability.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":45626582434083,"sku":"807166A1","price":86.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/807166a1.jpg?v=1761571270","url":"https:\/\/partsvu.com\/en-au\/products\/mercury-mercruiser-water-shutter-2-48-inch-diameter-807166a1","provider":"PartsVu","version":"1.0","type":"link"}