Merchant Category Code: Automotive & Marine \> Boat Parts & Accessories > Thermostats Review: Thermostats are an essential component of any boat's engine, and it is crucial to have a reliable thermostat that can withstand the harsh marine environment. In this review, we will take a closer look at some of the best replacement thermostats available on the market for various types of boats. Quicksilver 75692Q2 Replacement Thermostat - V-6 Mercury Outboards: The Quicksilver 75692Q2 is a high-quality replacement thermostat designed specifically for V-6 Mercury outboard engines. This thermostat features a durable stainless steel housing and a reliable, accurate temperature sensor that ensures optimal engine performance. The thermostat also includes an easy-to-install adapter kit that makes it simple to replace the old thermostat with the new one. Overall, this is an excellent choice for boat owners looking for a reliable replacement thermostat for their V-6 Mercury outboard engines. GLM Mercury Mariner Outboard Thermostat & Housing Kit 40 50 60 hp 2-Stroke Replaces 850055A2: The GLM Mercury Mariner Outboard Thermostat & Housing Kit is another excellent choice for boat owners looking to replace their thermostats. This kit includes a high-quality thermostat with an accurate temperature sensor and a durable stainless steel housing that can withstand the harsh marine environment. The kit also includes an easy-to-install adapter kit that makes it simple to replace the old thermostat with the new one. Overall, this is an excellent choice for boat owners looking for a reliable replacement thermostat for their Mercury Mariner outboard engines. Quicksilver Replacement Thermostat Kit 825212A1-30 HP - 50 HP 4-Stroke Outboards: The Quicksilver Replacement Thermostat Kit is a high-quality replacement thermostat designed specifically for 4-stroke outboard engines. This kit includes a reliable, accurate temperature sensor and a durable stainless steel housing that can withstand the harsh marine environment. The kit also includes an easy-to-install adapter kit that makes it simple to replace the old thermostat with the new one. Overall, this is an excellent choice for boat owners looking for a reliable replacement thermostat for their 4-stroke outboard engines. 18-3541 Boat Motor Thermostat for Mercury Mariner 4-Stroke 8HP - 90HP Outboard Engine: The 18-3541 Boat Motor Thermostat is a high-quality replacement thermostat designed specifically for Mercury Mariner outboard engines. This thermostat features an accurate temperature sensor and a durable stainless steel housing that can withstand the harsh marine environment. The thermostat also includes an easy-to-install adapter kit that makes it simple to replace the old thermostat with the new one. Overall, this is an excellent choice for boat owners looking for a reliable replacement thermostat for their Mercury Mariner outboard engines. Quicksilver Replacement Thermostat 833072003-75 HP - 115 HP Mercury OptiMax Outboards: The Quicksilver Replacement Thermostat is a high-quality replacement thermostat designed specifically for V-6 Mercury OptiMax outboard engines. This thermostat features an accurate temperature sensor and a durable stainless steel housing that can withstand the harsh marine environment. The thermostat also includes an easy-to-install adapter kit that makes it simple to replace the old thermostat with the new one. Overall, this is an excellent choice for boat owners looking for a reliable replacement thermostat for their V-6 Mercury OptiMax outboard engines. GLM Thermostat Kit for Mercury 6, 8, 9.9, 15, 20, 25 hp Outboard Motor 120° Replaces 14586A3: The GLM Thermostat Kit is a high-quality replacement thermostat designed specifically for Mercury outboard engines. This kit includes a reliable, accurate temperature sensor and a durable stainless steel housing that can withstand the harsh marine environment. The kit also includes an easy-to-install adapter kit that makes it simple to replace the old thermostat with the new one. Overall, this is an excellent choice for boat owners looking for a reliable replacement thermostat for their Mercury outboard engines. Quicksilver Replacement Thermostat 8M0057307 - for V-6 Mercury OptiMax Outboards: The Quicksilver Replacement Thermostat is another high-quality replacement thermostat designed specifically for V-6 Mercury OptiMax outboard engines. This thermostat features an accurate temperature sensor and a durable stainless steel housing that can withstand the harsh marine environment. The thermostat also includes an easy-to-install adapter kit that makes it simple to replace the old thermostat with the new one. Overall, this is an excellent choice for boat owners looking for a reliable replacement thermostat for their V-6 Mercury OptiMax outboard engines. Sierra International 18-3569 Thermostat Kit: The Sierra International 18-3569 Thermostat Kit is a high-quality replacement thermostat designed specifically for boats with 40HP to 75HP engines. This kit includes a reliable, accurate temperature sensor and a durable stainless steel housing that can withstand the harsh marine environment. The kit also includes an easy-to-install adapter kit that makes it simple to replace the old thermostat with the new one. Overall, this is an excellent choice for boat owners looking for a reliable replacement thermostat for their boats with 40HP to 75HP engines. Quicksilver Replacement Thermostat 8M0109441 - for MerCruiser Engines: The Quicksilver Replacement Thermostat is a high-quality replacement thermostat designed specifically for MerCruiser engines. This thermostat features an accurate temperature sensor and a durable stainless steel housing that can withstand the harsh marine environment. The thermostat also includes an easy-to-install adapter kit that makes it simple to replace the old thermostat with the new one. Overall, this is an excellent choice for boat owners looking for a reliable replacement thermostat for their MerCruiser engines. Boat Motor Thermostat 3H6-01030 for Mercury Mercruiser Quicksilver Tohatsu Nissan Outboard M NS 3.5HP - 40HP 50º 50 degrees Engine: The Boat Motor Thermostat is a high-quality replacement thermostat designed specifically for boats with Mercury Mercruiser, QuickSilver, Tohatsu, and Nissan outboard engines. This thermostat features an accurate temperature sensor and a durable stainless steel housing that can withstand the harsh marine environment. The thermostat also includes an easy-to-install adapter kit that makes it simple to replace the old thermostat with the new one. Overall, this is an excellent choice for boat owners looking for a reliable replacement thermostat for their boats with Mercury Mercruiser, QuickSilver, Tohatsu, and Nissan outboard engines. In conclusion, when it comes to replacing thermostats on boats, it's important to choose a high-quality product that can withstand the harsh marine environment. The products we have reviewed in this article are some of the best options available on the market for various types of boats. Whether you have a V-6 Mercury outboard engine or a 4-stroke outboard engine, there is a replacement thermostat available to suit your needs.