{"product_id":"mercury-mercruiser-thermostat-kit-fits-gm-vaeu-6-vaeu-8-engines-w-closed-cooling-99155t1","title":"Mercury – Thermostat \u0026 Seal Kit | Cooling System | Factory Marine Finish | 99155T1","description":"\u003ch2\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury – Thermostat \u0026amp; Seal Kit | Cooling System | Factory Marine Finish | 99155T1\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOverview\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThere’s a certain calm that settles in once your engine reaches that perfect running temperature—the moment everything evens out, smooths out, and feels right. Any boater who’s spent long days offshore or cruising a familiar stretch of river knows that feeling well. It’s the reassurance that your system is protected, that your engine is breathing easy, and that your boat is ready for whatever the day brings. That’s exactly the kind of quiet confidence you get from relying on a Mercury Marine part like the 99155T1 thermostat kit.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eKey Features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMaintains a precise one-hundred-sixty-degree Fahrenheit operating temperature\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eI\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003encludes both the thermostat and the correct seal for secure installation\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eDesigned specifically for MerCruiser V6 and V8 closed-cooling systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMarine-grade construction ensures dependable temperature control\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngineered for efficient coolant flow and long-term durability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eDirect-fit design allows smooth, trouble-free installation\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eM\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eade for 1998 and newer MerCruiser V6 and V8 engines built on General Motors blocks\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIdeal for boats equipped with closed-cooling systems requiring a one-hundred-sixty-degree thermostat\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCommon on cruisers, bowriders, sport boats, houseboats, and multi-purpose runabouts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eSuitable for recreational and commercial marine applications where steady engine temperature matters\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eA reliable thermostat makes a bigger difference than most boaters realize—until the moment one fails. With the Mercury Marine part 99155T1 installed, your engine reaches its ideal temperature quickly and stays there with remarkable consistency. You’ll notice the idle smooth out, the throttle respond more predictably, and the engine settle into a steady rhythm that just feels right.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eBecause it’s built specifically for marine use, this thermostat holds up under constant changes in load and water conditions. Whether you’re running at high rpm across open water or easing through a narrow channel, the temperature remains stable. That stability translates to cleaner combustion, better fuel efficiency, and less wear on critical components.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThe included seal means the unit seats tightly without fuss. Installation feels straightforward—no strange gaps, no guessing about alignment. Just a secure, clean fit that you can trust. Once in place, it supports a cooling system that works as it should, offering peace of mind every time you twist the key.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhy Buy OEM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThere’s a world of difference between a part that fits and a part that’s engineered for your exact engine. Mercury Marine parts are designed to meet precise temperature ratings and durability standards that aftermarket versions often miss. With the Mercury Marine part number 99155T1, you’re getting a thermostat built to match your cooling system’s exact needs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIt’s reliable, cost-effective in the long run, and \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eensures your engine performs the way it was designed to.\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e When it comes to something as important as temperature control, choosing OEM isn’t just smart—it’s the kind of decision seasoned boaters make without hesitation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFAQ\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ1: Which engines does the 99155T1 thermostat fit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It fits 1998 and newer MerCruiser V6 and V8 marine engines equipped with closed-cooling systems requiring a one-hundred-sixty-degree thermostat.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: What sets this apart from aftermarket thermostats?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It’s engineered to Mercury’s exact specifications, providing accurate temperature control and long-lasting performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How can I confirm it’s the right thermostat for my setup?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Check your owner’s manual or parts listing to verify the required part number for your cooling system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Is it suitable for both freshwater and saltwater use?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Yes. It’s built for the full range of marine environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is installation easy for most boat owners?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Many boaters install this themselves using common hand tools by following standard manual procedures.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46933434532131,"sku":"99155T1","price":35.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/99155t1_main.jpg?v=1760631544","url":"https:\/\/partsvu.com\/en-mx\/products\/mercury-mercruiser-thermostat-kit-fits-gm-vaeu-6-vaeu-8-engines-w-closed-cooling-99155t1","provider":"PartsVu","version":"1.0","type":"link"}