Car Thermostat Replacement Estimate for Mercedes-Benz S420

Mercedes-Benz S420 Car Thermostat Replacement costs $139 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$127 to $155
Labor: $77 -$96
Parts: $50 -$59
Average Dealer price
$203 to 230
Average Shop price
$154 to 174
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CarServiceYourMechanic PriceShop/Dealer Price
1999 Mercedes-Benz S420V8-4.2LService typeCar Thermostat ReplacementYourMechanic Price$148.04Shop/Dealer Price$194.54 - $265.44
1996 Mercedes-Benz S420V8-4.2LService typeCar Thermostat ReplacementYourMechanic Price$146.85Shop/Dealer Price$193.20 - $263.32
1995 Mercedes-Benz S420V8-4.2LService typeCar Thermostat ReplacementYourMechanic Price$137.13Shop/Dealer Price$180.96 - $243.72
1998 Mercedes-Benz S420V8-4.2LService typeCar Thermostat ReplacementYourMechanic Price$146.85Shop/Dealer Price$193.15 - $263.23
1994 Mercedes-Benz S420V8-4.2LService typeCar Thermostat ReplacementYourMechanic Price$131.14Shop/Dealer Price$172.64 - $234.22
1997 Mercedes-Benz S420V8-4.2LService typeCar Thermostat ReplacementYourMechanic Price$148.04Shop/Dealer Price$194.53 - $265.42
Show example Mercedes-Benz S420 Car Thermostat Replacement prices

Parts required for a Mercedes-Benz S420 Car Thermostat Replacement

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All about Car Thermostat Replacement

A thermostat is part of the cooling system that regulates the temperature of the coolant in the engine. The thermostat is a metal valve that has a temperature sensor built in. It can either be open or closed. When the thermostat is closed, it keeps the coolant in the engine. When the engine gets to a predetermined temperature, the thermostat opens allowing coolant to circulate. The circulation of coolant prevents the engine from overheating. If the thermostat fails to open, the car will overheat. If the thermostat fails to close, the engine may never reach the optimal temperature (~220F). The thermostat opens and closes many times when the car engine is running. It is the most common component in the cooling system to fail, causing the car to overheat.

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