Thermostats

Thermostats & Performance Thermostats

The thermostat regulates engine coolant temperature by controlling flow between the engine and the radiator. A stuck-closed thermostat causes overheating, while a stuck-open unit prevents the engine from reaching operating temperature. Performance thermostats open at lower temperatures to keep the engine cooler under hard driving, boost, and track conditions.

OneFastShop carries thermostats including OE-replacement thermostats, low-temperature performance thermostats, racing thermostats, thermostat housings, and direct-fit applications for virtually every car, truck, SUV, and performance engine platform.

Every thermostat at OneFastShop ships brand-new with manufacturer warranty coverage. Whether you're replacing a failed thermostat, dropping operating temps with a performance thermostat, or upgrading a thermostat housing, OneFastShop has the part. Shop the full thermostats collection today.