Collection: Thermostats
Thermostats are crucial components of the engine cooling system that regulate the flow of coolant to maintain optimal engine temperature. They are typically located between the engine & the radiator. The thermostat works by opening & closing based on the temperature of the coolant. When the engine is cold, the thermostat remains closed, preventing coolant from flowing through the radiator. This allows the engine to warm up quickly. Once the engine reaches the desired operating temperature, the thermostat opens, allowing coolant to flow through the radiator to dissipate heat. If the engine temperature drops below the set threshold, the thermostat closes again to maintain the optimal operating temperature. Thermostats are designed to ensure that the engine doesn't overheat or run too cool, which can negatively impact performance & fuel efficiency. Over time, thermostats can wear out or become stuck in either the open or closed position, leading to overheating or poor heating in the cabin. Regular maintenance & replacement of thermostats are important to ensure proper engine cooling & overall performance of the vehicle.
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Thermostat Housing Guard Plate [Early Vanagon]
Part # 025-121-148Vendor:GoWestyRegular price $29.94 USDRegular price$0.00 USDSale price $29.94 USD -
Lower Thermostat Housing [Early Vanagon]
Part # 025-121-121AVendor:GoWestyRegular price $184.95 USDRegular price$0.00 USDSale price $184.95 USD -
Thermostat Housing [Early Vanagon]
Part # 025-121-117CVendor:GoWestyRegular price $264.05 USDRegular price$0.00 USDSale price $264.05 USD -
Water Pipe, Thermostat Housing to Oil Cooler
Part # 025-121-065AVendor:GoWestyRegular price $33.95 USDRegular price$0.00 USDSale price $33.95 USD -
Thermostat Housing Flange [Early Vanagon]
Part # 025-121-116Vendor:GoWestyRegular price $47.94 USDRegular price$0.00 USDSale price $47.94 USD -
Coolant Hose - Thermostat Housing to Crossover Pipe [Syncro]
Part # 251-121-073-AMVendor:GoWestyRegular price $10.74 USDRegular price$0.00 USDSale price $10.74 USD -
Thermostat Housing to "T" Bleed Pipe Coolant Hose
Part # 025-121-058BVendor:GoWestyRegular price $9.54 USDRegular price$0.00 USDSale price $9.54 USD -
Heater Thermostat [Winnebago]
Part # 130974-01-01AVendor:GoWestyRegular price $29.94 USDRegular price$0.00 USDSale price $29.94 USD -
Coolant Hose (Radiator to Thermostat)
Part # 025-121-062E-AMVendor:GoWestyRegular price $34.95 USDRegular price$0.00 USDSale price $34.95 USD -
GoWesty Thermostat Housing Kit
Part # GVW-THERM-HSNG-DLXVendor:GoWestyRegular price $299.64 USDRegular price$0.00 USDSale price $299.64 USD -
Thermostat Housing Pump Coolant Hose
Part # 025-121-073HVendor:GoWestyRegular price $9.54 USDRegular price$0.00 USDSale price $9.54 USD -
Thermostat Housing to Distribution Tower Coolant Hose
Part # 251-121-058AVendor:GoWestyRegular price $12.25 USDRegular price$0.00 USDSale price $12.25 USD -
Lower Thermostat Housing - Aluminum [2WD & Syncro]
Part # 025-121-117EVendor:GoWestyRegular price From $49.95 USDRegular price$0.00 USDSale price From $49.95 USD -
Lower Thermostat Housing [Late Vanagon 2WD]
Part # 025-121-115Vendor:GoWestyRegular price $65.83 USDRegular price$0.00 USDSale price $65.83 USD -
Coolant Hose (Thermostat Housing to Bleeder Valve) [Early Vanagon]
Part # 025-121-073EVendor:GoWestyRegular price $29.95 USDRegular price$0.00 USDSale price $29.95 USD -
Upper Thermostat Housing [Late Vanagon]
Part # 025-121-114Vendor:GoWestyRegular price $23.94 USDRegular price$0.00 USDSale price $23.94 USD -
Stainless Steel Coolant Pipe - Water Pump to Thermostat [Late Vanagon]
Part # 025-121-081G-SSVendor:GoWestyRegular price $162.95 USDRegular price$0.00 USDSale price $162.95 USD -
Coolant Hose - Lower Crossover Pipe to Thermostat Housing [Syncro]
Part # 251-121-072-AMVendor:GoWestyRegular price $10.74 USDRegular price$0.00 USDSale price $10.74 USD -
Coolant Hose - Thermostat to Oil Cooler [Late Vanagon]
Part # 025-121-058DVendor:GoWestyRegular price $3.54 USDRegular price$0.00 USDSale price $3.54 USDSold out -
Thermostat Housing Bundle
Part # THERM-HSNG-BUNDLE-2.1Vendor:GoWestyRegular price $102.33 USDRegular price$0.00 USDSale price $102.33 USD -
87°C Thermostat
Part # 025-121-113FVendor:GoWestyRegular price $32.46 USDRegular price$0.00 USDSale price $32.46 USD -
Billet Upper Cover for Thermostat Housing
Part # GVW-025-121-114Vendor:GoWestyRegular price $105.74 USDRegular price$0.00 USDSale price $105.74 USD -
1.9 Thermostat Housing Gasket
Part # 025-121-127CVendor:GoWestyRegular price $5.78 USDRegular price$0.00 USDSale price $5.78 USD -
Coolant Hose (Thermostat Housing to Bleeder Valve) [Early Vanagon]
Part # 025-121-103CVendor:GoWestyRegular price $35.94 USDRegular price$0.00 USDSale price $35.94 USD
![Thermostat Housing Guard Plate [Early Vanagon]](http://milkymotorsports.com/cdn/shop/files/025-121-148.jpg?v=1740685567&width=533)
![Lower Thermostat Housing [Early Vanagon]](http://milkymotorsports.com/cdn/shop/files/025-121-117C_29d0199b-c87c-4d26-9f69-0982cab1431b.jpg?v=1740685472&width=533)
![Thermostat Housing [Early Vanagon]](http://milkymotorsports.com/cdn/shop/files/025-121-117C.jpg?v=1740685470&width=533)
![Coolant Hose - Thermostat Housing to Crossover Pipe [Syncro]](http://milkymotorsports.com/cdn/shop/files/full_983d3347b92ce9cc7ce8a53913bccd1a.jpg?v=1740685391&width=533)




![Lower Thermostat Housing - Aluminum [2WD & Syncro]](http://milkymotorsports.com/cdn/shop/files/full_2e4d47c0aa93278acf7895e495715f4e.jpg?v=1740685319&width=533)
![Lower Thermostat Housing [Late Vanagon 2WD]](http://milkymotorsports.com/cdn/shop/files/THERM-HSNG-BUNDLEDET.jpg?v=1740685309&width=533)
![Coolant Hose (Thermostat Housing to Bleeder Valve) [Early Vanagon]](http://milkymotorsports.com/cdn/shop/files/full_52ba99c09f643a2972904101ed2f7402.jpg?v=1740685300&width=533)
![Upper Thermostat Housing [Late Vanagon]](http://milkymotorsports.com/cdn/shop/files/full_1442e743d71c6383f01cfcff068d7bc3.jpg?v=1740685298&width=533)
![Stainless Steel Coolant Pipe - Water Pump to Thermostat [Late Vanagon]](http://milkymotorsports.com/cdn/shop/files/full_84196338afeeef7a42e79b7dcf47be80.jpg?v=1740685283&width=533)
![Coolant Hose - Thermostat to Oil Cooler [Late Vanagon]](http://milkymotorsports.com/cdn/shop/files/full_3bba404e509561891a727d955dd3fc9b.jpg?v=1740685246&width=533)



![Coolant Hose (Thermostat Housing to Bleeder Valve) [Early Vanagon]](http://milkymotorsports.com/cdn/shop/files/full_31ce166ad7bed7a8edb9b1e410cfdcf3.jpg?v=1740685200&width=533)