Car Thermostat Replacement at your home or office.

Our certified mechanics come to you・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Logo-yelp
CUSTOMERS LOVE US ON YELP
4.5 out of 5 (550 reviews)
Icon-warranty_badge-02
SERVICES BACKED BY OUR
12-Month, 12,000-Mile Warranty
How does YourMechanic work?    
Icon-quote-hiw
Get a quote

Choose from 600+ repair, maintenance, and diagnostic services, backed by our 12-month, 12,000-mile warranty.

Icon-calendar-hiw
Book an appointment

Tell us when to meet you at your home or office. We’ll send one of our vetted, top-rated mechanics.

Icon-fixed-hiw
Get your car fixed

Continue with your day while our mechanic fixes your car onsite. You pay only after the job is done.

Car Thermostat Replacement Estimate for Kia Optima

Kia Optima Car Thermostat Replacement costs $132 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$113 to $200
Labor: $70 -$112
Parts: $43 -$88
Average Dealer price
$178 to 307
Average Shop price
$137 to 227
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
2009 Kia OptimaL4-2.4LService typeCar Thermostat ReplacementYourMechanic Price$118.60Shop/Dealer Price$145.27 - $192.61
2001 Kia OptimaV6-2.5LService typeCar Thermostat ReplacementYourMechanic Price$117.34Shop/Dealer Price$143.77 - $190.21
2004 Kia OptimaL4-2.4LService typeCar Thermostat ReplacementYourMechanic Price$118.59Shop/Dealer Price$145.29 - $192.64
2003 Kia OptimaL4-2.4LService typeCar Thermostat ReplacementYourMechanic Price$118.59Shop/Dealer Price$145.31 - $192.68
2012 Kia OptimaL4-2.0L TurboService typeCar Thermostat ReplacementYourMechanic Price$146.60Shop/Dealer Price$179.10 - $230.80
2005 Kia OptimaV6-2.7LService typeCar Thermostat ReplacementYourMechanic Price$118.23Shop/Dealer Price$144.81 - $191.87
2010 Kia OptimaL4-2.4LService typeCar Thermostat ReplacementYourMechanic Price$118.83Shop/Dealer Price$145.64 - $193.21
2012 Kia OptimaL4-2.4LService typeCar Thermostat ReplacementYourMechanic Price$143.18Shop/Dealer Price$174.89 - $224.09
Show example Kia Optima Car Thermostat Replacement prices

Car Thermostat Replacement Service & Cost

What is the Thermostat all about?

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.

Thermostat

Keep in mind:

  • The entire cooling system should be inspected when the thermostat is replaced.
  • When the thermostat is replaced, the gaskets and housings should be cleaned thoroughly.

How it's done:

  • Scan the computer in the car for codes.
  • Verify that the car is overheating.
  • Remove and replace thermostat if it is faulty.
  • Clean old gasket surfaces.
  • Remove corrosion from housings/hose connections.
  • Fill cooling system.
  • Check for leaks and proper operating temperatures.

Our recommendation:

Have the thermostat replaced anytime you have major work done on the coolant system.

What common symptoms indicate you may need to replace the Thermostat?

  • Engine overheats.
  • Car heater does not work.
  • Check Engine light is on.

How important is this service?

A vehicle’s engine gets extremely hot, and in order to avoid overheating, it needs to be properly cooled. The engine is cooled by a viscous liquid called coolant. The coolant is circulated around the engine, where it absorbs heat, which allows the engine to remain at a safe temperature. A fan then lowers the temperature of the coolant, which allows it to run back through the engine once more. The thermostat is responsible for determining when the coolant needs to enter the engine. The thermostat determines the temperature of the engine, and then acts as a valve that allows coolant in, or keeps coolant out. When the engine is too cold, the thermostat keeps coolant out; when the engine is too hot, it lets coolant in.

When the thermostat stops working, it will either get stuck open or closed. If the thermostat is stuck open, the coolant will constantly flow through the engine, absorbing too much heat, and the engine will never reach optimal running temperature. If the thermostat is stuck closed, the coolant will never circulate through the engine, and your engine will quickly overheat, which can cause severe damage.

Fast and easy Car Thermostat Replacement service at your home or office.

GET A QUOTE FOR YOUR CAR
Backed by 12-month, 12,000-mile guarantee

Meet some of our expert Kia mechanics

Real customer reviews from Kia owners like you.

432 reviews
Patrick
22 years of experience
Fast. Efficient. Polite. I highly recommend Patrick!
2012 KIA OPTIMA - CAR BATTERY REPLACEMENT
Want Patrick's expert advice? Ask your question now. Its free!
274 reviews
Noe
31 years of experience
Noe was polite, kind, and professional. I would have him back again to work on my vehicle.
2001 KIA OPTIMA - IDLE CONTROL VALVE REPLACEMENT
Want Noe's expert advice? Ask your question now. Its free!
223 reviews
Joe
38 years of experience
Nice and Honest person.
2003 KIA OPTIMA - OTHER INSPECTIONS
Want Joe's expert advice? Ask your question now. Its free!
129 reviews
Allen
31 years of experience
Showed up on time (a few minutes early) and did a great inspection of the A/C. Described exactly what was going on so that I could understand it!
2001 KIA OPTIMA - AC IS NOT WORKING INSPECTION
Want Allen's expert advice? Ask your question now. Its free!
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
2009 Kia OptimaL4-2.4LService typeCar Thermostat ReplacementYourMechanic Price$118.60Shop/Dealer Price$145.27 - $192.61
2001 Kia OptimaV6-2.5LService typeCar Thermostat ReplacementYourMechanic Price$117.34Shop/Dealer Price$143.77 - $190.21
2004 Kia OptimaL4-2.4LService typeCar Thermostat ReplacementYourMechanic Price$118.59Shop/Dealer Price$145.29 - $192.64
2003 Kia OptimaL4-2.4LService typeCar Thermostat ReplacementYourMechanic Price$118.59Shop/Dealer Price$145.31 - $192.68
2012 Kia OptimaL4-2.0L TurboService typeCar Thermostat ReplacementYourMechanic Price$146.60Shop/Dealer Price$179.10 - $230.80
2005 Kia OptimaV6-2.7LService typeCar Thermostat ReplacementYourMechanic Price$118.23Shop/Dealer Price$144.81 - $191.87
2010 Kia OptimaL4-2.4LService typeCar Thermostat ReplacementYourMechanic Price$118.83Shop/Dealer Price$145.64 - $193.21
2012 Kia OptimaL4-2.4LService typeCar Thermostat ReplacementYourMechanic Price$143.18Shop/Dealer Price$174.89 - $224.09
Show example Kia Optima Car Thermostat Replacement prices

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com