Thermostat Replacement
Shop Cost
$300
DIY Parts
$30
You Save
$270
Tools Required (4)
Socket set
Scraper/razor blade
Drain pan
Pliers
Parts & Consumables
ThermostatGasketCoolant
Pro Tip Spring side faces engine.
🚗 Vehicle-Specific Notes
Honda
Usually in lower radiator hose housing. 10mm bolts. Jiggle valve faces up.
Toyota
Bottom of engine, follow lower hose. 10mm bolts. 170-180F thermostat.
BMW
Electric thermostat on N52/N55. Map-controlled. Electrical connector.
Extra tools: BMW scan tool for bleed procedure
Subaru
Under intake on boxer. Accessible from top. Bleed air from heater hose.
Ford
Follow upper radiator hose to housing. 8mm bolts. Gasket or O-ring seal.
Chevrolet
Under throttle body on many. Follow upper hose. 13mm bolts.