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While an engine generates a lot of heat, there are certain situations where it would not be beneficial for coolant to be flowing through the radiator and cooling down. All motors operate most efficiently within a narrow temperature range, and the cooling system is designed not to keep the engine as cool as possible, but to actually keep it within this specific range of temperature values. A key component in making this happen is the thermostat. The thermostat is a device that is placed in-line with the piping leading from the engine block to the radiator. There is a temperature sensor inside of the thermostat that measures the surrounding water to determine if it is necessary for it to cool down. If it is above a certain value, usually 195 degrees or greater, the thermostat stays open and the coolant is able to circulate to the radiator. However, if the liquid temperature is below this value, a valve inside the thermostat seals off the passage to the radiator, and the coolant is shunted back inside the engine so it can warm up. A thermostat is particularly useful for people who live in cold climates, as the temperature of the coolant when they start the car is usually below zero on a winter’s day. In order to help get the engine’s temperature back up to operating range as quickly as possible, the thermostat stays closed from the moment the car is started until it finally warms up enough to provide normal operation.

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The Following brands are available based on your search.

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    Mahle
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Best Selling Genuine Replacement Thermostats

  • Constantly Updated Inventory of Replacement Thermostat Parts
  • We stock Discount Thermostat OEM Parts

We stock Thermostat parts for most makes, including AM General, Acura, Audi, Austin, BMW, Buick, Cadillac, Chevrolet, Chrysler, Daewoo, Daihatsu, Datsun, Dodge, Eagle, Emergency One, Evobus, Fiat, Ford, Foton, Freightliner, GMC, Geo, Grande West, Honda, Hummer, Hyundai, INFINITI, Indiana Phoenix, Infiniti, International, Isuzu, Jaguar, Jeep, Kenworth, Kia, Land Rover, Lexus, Lincoln, MASA, MG, Mack, Mazda, Mercedes Benz, Mercury, Merkur, Mini, Mitsubishi, Nissan, Oldsmobile, Omega, Peugeot, Plymouth, Pontiac, Porsche, Ram, Renault, Rover, Saab, Saturn, Scion, Smart, Sterling, Sterling Truck, Stewart & Stevenson, Subaru, Sutphen Corp., Suzuki, Temsa Bus, Toyota, Triumph, VAM, Volkswagen, Volvo, Western RV, Western Star.


ACDelco
2004 Chevrolet Silverado 2500 HD Engine Coolant Thermostat 8 Cyl 6.6L ACDelco

P311-5F4CEDF    W0133-1694073  New

Qty:
In Stock & Ready to Ship
$82.82
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
Brand: ACDelco
Additional Fitment Information:
Vehicle Block Engine CID CC
2004 - Chevrolet Silverado 2500 HD V 8 Cyl 6.6L 403 6599
ACDelco
1996 GMC C3500 Engine Coolant Thermostat 8 Cyl 7.4L ACDelco - 195F / 91C

P311-0438E89    W0133-1694589  New

Qty:
In Stock & Ready to Ship
$26.40
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
  • 195F / 91C
Brand: ACDelco
Additional Fitment Information:
Vehicle Block Engine CID CC
1996 - GMC C3500 V 8 Cyl 7.4L 454 -
ACDelco
2013 Buick Verano Engine Coolant Thermostat ACDelco

P311-1D50E6E    W0133-1866553  New

Qty:
In Stock & Ready to Ship
$93.91
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
Brand: ACDelco
Additional Fitment Information:
Vehicle
2013 - Buick Verano
ACDelco
2005 Chevrolet Avalanche 2500 Engine Coolant Thermostat ACDelco - 195F / 91C

P311-0438E89    W0133-1694589  New

Qty:
In Stock & Ready to Ship
$26.40
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
  • Includes Gasket
  • 195F / 91C
Brand: ACDelco
Additional Fitment Information:
Vehicle
2005 - Chevrolet Avalanche 2500
ACDelco
2007 Saturn Vue Engine Coolant Thermostat 4 Cyl 2.2L ACDelco

P311-1D50E6E    W0133-1866553  New

Qty:
In Stock & Ready to Ship
$93.91
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
  • Includes Gasket
Brand: ACDelco
Additional Fitment Information:
Vehicle Block Engine CID CC
2007 - Saturn Vue L 4 Cyl 2.2L 134 2198
ACDelco
2014 Chevrolet Corvette Engine Coolant Thermostat ACDelco

P311-0846BBF    W0133-2550368  New

Qty:
In Stock & Ready to Ship
$79.41
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
  • Includes Coolant Outlet Housing and O-Ring
Brand: ACDelco
Additional Fitment Information:
Vehicle
2014 - Chevrolet Corvette
ACDelco
2003 Chevrolet Silverado 3500 Engine Coolant Thermostat 8 Cyl 6.6L ACDelco

P311-4BD529D    W0133-1694074  New

Qty:
In Stock & Ready to Ship
$72.38
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
Brand: ACDelco
Additional Fitment Information:
Vehicle Block Engine CID CC
2003 - Chevrolet Silverado 3500 V 8 Cyl 6.6L 403 6599
ACDelco
1989 Chevrolet Corsica Engine Coolant Thermostat 6 Cyl 2.8L ACDelco - 195F / 91C

P311-1A09B54    W0133-1682422  New

Qty:
In Stock & Ready to Ship
$38.94
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
  • 195F / 91C
Brand: ACDelco
Additional Fitment Information:
Vehicle Block Engine CID CC
1989 - Chevrolet Corsica V 6 Cyl 2.8L 173 -
ACDelco
2003 Buick Century Engine Coolant Thermostat ACDelco - 195F / 91C

P311-1A09B54    W0133-1682422  New

Qty:
In Stock & Ready to Ship
$38.94
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
  • Includes Gasket
  • 195F / 91C
Brand: ACDelco
Additional Fitment Information:
Vehicle
2003 - Buick Century
ACDelco
2008 Chevrolet Corvette Engine Coolant Thermostat ACDelco - w/o O-Ring

P311-3D33C49    W0133-1783286  New

Qty:
In Stock & Ready to Ship
$40.26
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
  • w/o O-Ring
Brand: ACDelco
Additional Fitment Information:
Vehicle
2008 - Chevrolet Corvette
ACDelco
2002 Chevrolet Silverado 3500 Engine Coolant Thermostat 8 Cyl 6.0L ACDelco

P311-3787E2C    W0133-1783287  New

Qty:
In Stock & Ready to Ship
$75.42
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
  • Includes Coolant Outlet Housing and Gasket
Brand: ACDelco
Additional Fitment Information:
Vehicle Block Engine CID CC
2002 - Chevrolet Silverado 3500 V 8 Cyl 6.0L 364 5967
Mahle
2007 Mercedes-Benz SLK280 Engine Coolant Thermostat Mahle

P311-43AAA08    W0133-1953845  New

Qty:
In Stock & Ready to Ship
$156.04
Mahle Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Integrated Housing
Brand: Mahle
Additional Fitment Information:
Vehicle
2007 - Mercedes-Benz SLK280
Mahle
2006 BMW 330Ci Engine Coolant Thermostat Mahle - Behr with Housing & Seal

P311-42D7231    W0133-1662661  New

Qty:
In Stock & Ready to Ship
$70.57
Mahle Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Behr with Housing & Seal
Brand: Mahle
Additional Fitment Information:
Vehicle
2006 - BMW 330Ci
Mahle
2001 BMW 320i Engine Coolant Thermostat Mahle - Behr with Housing & Seal

P311-42D7231    W0133-1662661  New

Qty:
In Stock & Ready to Ship
$70.57
Mahle Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • With Housing and Seal
  • Behr with Housing & Seal
  • W/ Housing
Brand: Mahle
Additional Fitment Information:
Vehicle
2001 - BMW 320i
Stant
2008 Chrysler Sebring Engine Coolant Thermostat 4 Cyl 2.4L Stant - (96°C/203°F)

P311-4A2D5B3    W0133-1969449  New

Qty:
In Stock & Ready to Ship
$17.79
Stant Engine Coolant Thermostat
  • OE Type
  • Secondary - At Inlet Pipe
  • Includes Gasket - 203° F - NOTE: When Servicing Thermostat, OE Recommends To Change Both Primary And Secondary Thermostats at the Same Time.
  • (96°C/203°F)
Brand: Stant
Additional Fitment Information:
Vehicle Block Engine CID CC
2008 - Chrysler Sebring L 4 Cyl 2.4L 144 2360
Stant
2008 Dodge Avenger Engine Coolant Thermostat 4 Cyl 2.4L Stant - (96°C/203°F)

P311-4A2D5B3    W0133-1969449  New

Qty:
In Stock & Ready to Ship
$17.79
Stant Engine Coolant Thermostat
  • OE Type
  • Secondary - At Inlet Pipe
  • (96°C/203°F)
Brand: Stant
Additional Fitment Information:
Vehicle Block Engine CID CC
2008 - Dodge Avenger L 4 Cyl 2.4L 144 2360
Stant
2020 Dodge Journey Engine Coolant Thermostat Stant - (96°C/203°F)

P311-4A2D5B3    W0133-1969449  New

Qty:
In Stock & Ready to Ship
$17.79
Stant Engine Coolant Thermostat
  • OE Type
  • 203 Degrees F, All Required
  • (96°C/203°F)
Brand: Stant
Additional Fitment Information:
Vehicle
2020 - Dodge Journey
ACDelco
2002 Chevrolet Blazer Engine Coolant Thermostat ACDelco

P311-5123BC4    W0133-1972134  New

Qty:
In Stock & Ready to Ship
$37.31
ACDelco Engine Coolant Thermostat
  • Gold
Brand: ACDelco
Additional Fitment Information:
Vehicle
2002 - Chevrolet Blazer
ACDelco
2002 Chevrolet Blazer Engine Coolant Thermostat ACDelco

P311-5123BC4    W0133-1972134  New

Qty:
In Stock & Ready to Ship
$37.31
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
Brand: ACDelco
Additional Fitment Information:
Vehicle
2002 - Chevrolet Blazer
ACDelco
2011 GMC Canyon Engine Coolant Thermostat 5 Cyl 3.7L ACDelco

P311-1A388FE    W0133-1972338  New

Qty:
In Stock & Ready to Ship
$79.65
ACDelco Engine Coolant Thermostat
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • Genuine GM
Brand: ACDelco
Additional Fitment Information:
Vehicle Block Engine CID CC
2011 - GMC Canyon L 5 Cyl 3.7L 223 3654