Thermostat Replacement Estimate for BMW 645Ci

BMW 645Ci Thermostat Replacement costs $173 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$173 to $187
Labor: $98 -$112
Parts: $75
Average Dealer price
$280
Average Shop price
$210
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CarServiceYourMechanic PriceShop/Dealer Price
2005 BMW 645CiV8-4.4LService typeThermostat ReplacementYourMechanic Price$178.74Shop/Dealer Price$234.50 - $321.73
2004 BMW 645CiV8-4.4LService typeThermostat ReplacementYourMechanic Price$177.25Shop/Dealer Price$232.80 - $319.04
Show example BMW 645Ci Thermostat Replacement prices

Parts required for a BMW 645Ci Thermostat Replacement

Thermostat Gasket
$4
Thermostat
$59

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471 reviews
Peter
38 years of experience
Peter was awesome thanks so much!
2003 BMW 745I - HOOD LATCH IS STUCK
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286 reviews
Dave
18 years of experience
Dave is the third person who has tried to diagnose the problem with my car and he fixed for about half of the original estimate in about half the time budgeted. I only hope that I'm able to get him again for ongoing service.
2013 BMW X3 - THERMOSTAT REPLACEMENT
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283 reviews
Patrick
27 years of experience
Patrick is a great guy and really knows his stuff. Yourmechanic.com rips you a new one on parts and labor but i guess you pay for not having the headache. I paid 370 labor for 3 hours and 255 for parts that go for 65 bucks on parksgeek.com and even cheaper on a few other sites but for original bmw parts it is 65 and they charged 255. Fyi. If it can wait a couple days, buy the parts first
2005 BMW 645CI - CAMSHAFT POSITION SENSOR REPLACEMENT
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75 reviews
Brikk
13 years of experience
Very helpful, professional. Will use again.
2010 BMW X5 - PRE-PURCHASE CAR INSPECTION
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All about 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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