Thermostat

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The thermostat in a car sits between the engine and the radiator, working to help regulate the flow of the coolant from the radiator to the engine to prevent it from overheating. The thermostat turns the flow of coolant on and off depending on the temperature of the engine. When the engine is cold it closes the valve, and when it is sufficiently warm it allows the coolant to flow and dissipate heat. When the thermostat malfunctions, the engine will either overheat or not get sufficent heat to function properly. Other symptoms that the original thermostat is failing include erratic temperature readings. You might see the temperature jump into the red zone within fifteen minutes of starting the car, or might see it read too low. You can also check to see if there is any leaking coolant around the thermostat housing or underneath your vehicle. A malfunctioning thermostat needs to be replaced right away so you can protect the condition of your engine. When you find yourself in need of genuine thermostat or other cooling system components, shop the selection we have here on our site. We sell OEM Toyota thermostats to make replacements as simple as possible.

Thermostat
Part Number: 90916-03147
Other Names: Thermostat Element More Names
Description: IQ. More Info
Fits:
  • Scion:
    • iQ
MSRP $29.51
$21.29
MSRP $29.51
$21.29
Thermostat
Part Number: 32971-48030
Other Names: Thermostat Transmission More Names
Description: 3.5L. More Info
Fits:
  • Toyota:
    • Highlander
MSRP $162.34
$111.26
MSRP $162.34
$111.26
Thermostat
Part Number: 32971-45010
Other Names: Thermostat Transmission More Names
Description: 3.5L, 2017-20. More Info
Fits:
  • Toyota:
    • Sienna
MSRP $162.34
$111.26
MSRP $162.34
$111.26
Thermostat
Part Number: 32971-WAA01
Other Names: Thermostat Transmission More Names
Description: 3.0L. 2.0L. More Info
Fits:
  • Toyota:
    • GR Supra
MSRP $86.97
$59.87
MSRP $86.97
$59.87
Thermostat Housing
Part Number: 16321-11011
Other Names: Engine Coolant Thermostat Housing, Inlet Water More Names
Description: Tercel. Liftback, sedan, wagon. Water inlet. Auto trans. Paseo. More Info
Fits:
  • Toyota:
    • Paseo,
    • Tercel
MSRP $56.52
$38.91
MSRP $56.52
$38.91
Thermostat Housing
Part Number: 16321-22050
Other Names: Engine Coolant Thermostat Housing, Inlet Water More Names
Replaces: 16321-22060
Description: To 05/2000. Type-B. Celica. Gt. MR2. To 04-00. More Info
Fits:
  • Toyota:
    • Celica,
    • Corolla,
    • MR2 Spyder
MSRP $62.58
$43.07
MSRP $62.58
$43.07
Thermostat Housing
Part Number: 16321-22070
Other Names: Water Inlet, Engine Coolant Thermostat Housing, Inlet Water More Names
Description: Without xrs. Corolla. Matrix. Celica. Gt. From 04-00. MR2. To 05/2000. Type-C. From 04/2000. More Info
Fits:
  • Toyota:
    • Celica,
    • Corolla,
    • Matrix,
    • MR2 Spyder
MSRP $20.26
$14.62
MSRP $20.26
$14.62
Thermostat Housing
Part Number: 16323-0P010
Positions: Lower
Other Names: Water Inlet, Water Separator, Engine Coolant Thermostat Housing, Housing Water Inlet More Names
Replaces: 16323-31011
Description: Tacoma. 4.0L, without towing package. 4-runner. 6 cylinder. From 3/04. 4.0L, without oil cooler. FJ Cruiser. Exc.Towing Package. Japan... More Info
Fits:
  • Toyota:
    • 4Runner,
    • FJ Cruiser,
    • Tacoma
MSRP $146.02
$100.08
MSRP $146.02
$100.08
Thermostat Housing
Part Number: 16331-35051
Other Names: Engine Coolant Thermostat Housing, Outlet Water More Names
Replaces: 16331-35050
Description: Pick-up, 4-runner. Gas. 4 cylinder. Carb. More Info
Fits:
  • Toyota:
    • Pickup
MSRP $64.85
$44.64
MSRP $64.85
$44.64
Thermostat Housing
Part Number: 16323-0P030
Positions: Lower
Other Names: Housing, Water Inlet, Engine Coolant Thermostat Housing, Housing Water Inlet More Names
Fits:
  • Toyota:
    • Avalon,
    • Camry,
    • Highlander,
    • RAV4,
    • Sienna,
    • Venza
  • 1 more
MSRP $84.19
$57.95
MSRP $84.19
$57.95
Thermostat Gasket
Part Number: 16326-37020
Other Names: Thermostat Housing Gasket, Water Inlet Gasket, Gasket Water Inlet More Names
Description: Prius V. With prime. Prius Prime. Prius AWD-e. 1.8L, reservoir & hoses, with hybrid le. More Info
Notes: 53. More Notes
Fits:
  • Toyota:
    • Corolla,
    • Prius,
    • Prius AWD-e,
    • Prius Plug-In,
    • Prius Prime,
    • Prius V
  • 1 more
MSRP $5.49
$3.96
MSRP $5.49
$3.96
Thermostat Housing
Part Number: 16331-35090
Other Names: Engine Coolant Thermostat Housing, Outlet, Water More Names
Description: Pick-up, 4-runner. Gas. 4 cylinder. Fuel injection. 4wd. With cooler. Intercooler. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Pickup
MSRP $49.93
$35.42
MSRP $49.93
$35.42
Thermostat Gasket
Part Number: 16346-50010
Other Names: Gasket, Gasket Thermostat More Names
Description: 4.7L. Tundra. Sequoia. Land Cruiser. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Land Cruiser,
    • Sequoia,
    • Tundra
MSRP $5.60
$4.04
MSRP $5.60
$4.04
Thermostat Unit
Part Number: 32971-34030
Other Names: Thermostat Transmission More Names
Description: 4.6L, with towing package. More Info
Fits:
  • Toyota:
    • Tundra
MSRP $162.34
$111.26
MSRP $162.34
$111.26
Thermostat Housing
Part Number: 16321-0F010
Other Names: Water Inlet, Thermostat Cover, Housing, Inlet Tube, Inlet Water More Names
Replaces: 16321-50020
Description: 4.7L. Outlet. Water inlet. Land Cruiser. Cover. Tundra. Sequoia. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Land Cruiser,
    • Sequoia,
    • Tundra
MSRP $78.90
$54.31
MSRP $78.90
$54.31
Thermostat Housing
Part Number: 16321-10011
Other Names: Engine Coolant Thermostat Housing, Inlet Water More Names
Description: Tercel. Liftback, sedan, wagon. Water inlet. Manual trans. Paseo. More Info
Fits:
  • Toyota:
    • Paseo,
    • Tercel
MSRP $56.52
$38.91
MSRP $56.52
$38.91
Thermostat Housing
Part Number: 16321-20030
Positions: Upper
Other Names: Water Inlet, Cover, Engine Coolant Thermostat Housing, Inlet Water More Names
Replaces: 16321-0A030
Description: Solara. 3.3l. Avalon. Sienna. 3.0 & 3.3L. 2008-10. 3.0L. Highlander Hybrid. From 01/2003. More Info
Fits:
  • Toyota:
    • Avalon,
    • Camry,
    • Highlander,
    • Sienna,
    • Solara
MSRP $78.90
$54.31
MSRP $78.90
$54.31
Thermostat Housing
Part Number: 1632188380
Other Names: Engine Coolant Thermostat Housing, More Names
Description: Celica. With turbo. More Info
Fits:
  • Toyota:
    • Celica
MSRP $102.60
$87.21
MSRP $102.60
$87.21
Thermostat Housing
Part Number: 16323-31020
Positions: Lower
Other Names: Engine Coolant Thermostat Housing, Multiple Part Name Code More Names
Description: Towing Package. 4-runner. 6 cylinder. 4.0L, with oil cooler. More Info
Fits:
  • Toyota:
    • 4Runner
MSRP $79.85
$54.97
MSRP $79.85
$54.97
Thermostat Gasket
Part Number: 16325-36010
Other Names: Engine Coolant Thermostat Housing Seal, Thermostat Unit Seal, Water Inlet Seal, Gasket Water Inlet More Names
Description: Camry Hybrid. Avalon hybrid. 2.5L. More Info
Notes: 16. More Notes
Fits:
  • Toyota:
    • Avalon,
    • Camry
MSRP $5.43
$3.91
MSRP $5.43
$3.91
Thermostat Housing
Part Number: 16331-35041
Other Names: Engine Coolant Thermostat Housing, Outlet Water More Names
Replaces: 16331-35040
Description: Pick-up, 4-runner. Gas. 4 cylinder. Fuel injection. 2wd. Without trailer pkg. Pick-up. 4 cylinder. Celica. 4-runner. 4 cylinder. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Celica,
    • Pickup
MSRP $63.33
$43.59
MSRP $63.33
$43.59
Thermostat Housing
Part Number: 16331-35070
Other Names: Engine Coolant Thermostat Housing, Outlet Water More Names
Description: Pick-up, 4-runner. Gas. 4 cylinder. Fuel injection. 2wd. With trailer pkg. Exc.Intercooler. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Pickup
MSRP $54.93
$37.81
MSRP $54.93
$37.81
Thermostatic Switch
Part Number: 17728-11030
Other Names: Valve, Thermostatic More Names
Description: Tercel. Liftback, sedan. More Info
Fits:
  • Toyota:
    • Tercel
MSRP $78.11
$53.77
MSRP $78.11
$53.77
Thermostat Housing Stud
Part Number: 90080-11541
Other Names: Engine Coolant Thermostat Housing Stud, Bolt Stud More Names
Replaces: 92122-60612
Fits:
  • Toyota:
    • Highlander
MSRP $1.44
$1.03
MSRP $1.44
$1.03
Thermostat Housing Bolt
Part Number: 90105-A0338
Other Names: Engine Coolant Thermostat Housing Bolt, Bolt Flange More Names
Replaces: 90105-06352
Description: Hatchback,. More Info
Fits:
  • Toyota:
    • Corolla
MSRP $0.75
$0.54
MSRP $0.75
$0.54
Engine Coolant Thermostat
Part Number: 90916-03079
Other Names: Thermostat More Names
Description: Fits 4Runner, T100, Truck Gas. T100. 6 cylinder. Pick-up, 4-runner. Pick-up. 6 cylinder. 4-runner. 6 cylinder.... More Info
Fits:
  • Toyota:
    • 4Runner,
    • Pickup,
    • T100
MSRP $35.46
$25.16
MSRP $35.46
$25.16
Engine Coolant Thermostat
Part Number: 90916-03093
Other Names: Thermostat More Names
Fits:
  • Scion:
    • xA,
    • xB
  • Toyota:
    • 4Runner,
    • Echo,
    • Prius,
    • Supra,
    • Tacoma,
    • Yaris
  • 3 more
MSRP $28.71
$20.71
MSRP $28.71
$20.71
Engine Coolant Thermostat
Part Number: 90916-03075
Other Names: Thermostat More Names
Description: Fits 4Runner, Camry, Celica, MR2, T100, Tacoma , Tundra MR2. 3.4L. Tundra. Celica. Gt, gt-s. Without turbo. T100. 6... More Info
Fits:
  • Toyota:
    • 4Runner,
    • Camry,
    • Celica,
    • MR2,
    • T100,
    • Tacoma,
    • Tundra
  • 2 more
MSRP $35.46
$25.16
MSRP $35.46
$25.16
Engine Coolant Thermostat
Part Number: 90916-03136
Other Names: Thermostat More Names
Replaces: 90916-C3001
Fits:
  • Scion:
    • tC,
    • xB
  • Toyota:
    • Camry,
    • Corolla,
    • Highlander,
    • Matrix,
    • RAV4,
    • Solara
  • 3 more
MSRP $28.55
$20.59
MSRP $28.55
$20.59
Thermostat Housing Stud
Part Number: 90080-11540
Other Names: Engine Coolant Thermostat Housing Stud, Bolt Stud More Names
Replaces: 90116-06070
Description: 3.3L. 3.0L. More Info
Fits:
  • Toyota:
    • Highlander
MSRP $1.44
$1.03
MSRP $1.44
$1.03
Engine Coolant Thermostat
Part Number: 90916-03090
Other Names: Thermostat More Names
Replaces: 90916-03060
Fits:
  • Toyota:
    • Camry,
    • Celica,
    • Corolla,
    • MR2,
    • RAV4,
    • Solara
  • 1 more
MSRP $35.77
$25.37
MSRP $35.77
$25.37
Engine Coolant Thermostat
Part Number: 90916-03138
Other Names: Thermostat More Names
Description: Fits 4Runner, Land Cruiser, Sequoia, Tundra 4.7L. Tundra. Sequoia. From 07/2006. 4-runner. 8 cylinder. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Land Cruiser,
    • Sequoia,
    • Tundra
MSRP $49.10
$34.83
MSRP $49.10
$34.83
Engine Coolant Thermostat
Part Number: 90916-A3003
Other Names: Thermostat More Names
Replaces: 90916-03084, 90916-03129
Fits:
  • Scion:
    • tC,
    • xD
  • Toyota:
    • Avalon,
    • Camry,
    • Celica,
    • Corolla,
    • Highlander,
    • Matrix,
    • MR2 Spyder,
    • RAV4,
    • Sienna,
    • Solara,
    • Venza
  • 8 more
MSRP $28.58
$20.62
MSRP $28.58
$20.62
Thermostat Housing Gasket
Part Number: 16326-37010
Other Names: Engine Coolant Thermostat Housing Gasket, Gasket Water Inlet More Names
Description: Without valvematic eng. More Info
Fits:
  • Scion:
    • xD
  • Toyota:
    • Corolla,
    • Matrix
MSRP $8.33
$6.01
MSRP $8.33
$6.01
Engine Coolant Thermostat
Part Number: 90916-03046
Other Names: Thermostat More Names
Replaces: 90916-03069
Fits:
  • Toyota:
    • Camry,
    • Celica,
    • Corolla,
    • MR2,
    • Paseo,
    • RAV4,
    • Tercel,
    • Van
  • 3 more
MSRP $28.71
$20.71
MSRP $28.71
$20.71
Engine Coolant Thermostat
Part Number: 90916-03078
Other Names: Thermostat More Names
Replaces: 90916-03022, 90916-03023, 90916-03029, 90916-03036, 90916-03040, 90916-03055
Fits:
  • Toyota:
    • 4Runner,
    • Celica,
    • Corolla,
    • Cressida,
    • Pickup,
    • Starlet,
    • Supra
  • 2 more
MSRP $28.55
$20.59
MSRP $28.55
$20.59
Engine Coolant Thermostat
Part Number: 90916-03125
Other Names: Thermostat More Names
Description: From 07/00. More Info
Fits:
  • Toyota:
    • Celica,
    • Corolla,
    • MR2 Spyder
MSRP $28.58
$20.62
MSRP $28.58
$20.62
Engine Coolant Thermostat
Part Number: 90916-03145
Other Names: Thermostat More Names
Description: Corolla. 1.8L, japan built, type c. Matrix. 1.8L, auto trans, type c. Vendor:fuji seiko. More Info
Fits:
  • Scion:
    • xD
  • Toyota:
    • Corolla,
    • Matrix
MSRP $28.52
$20.58
MSRP $28.52
$20.58
Engine Coolant Thermostat Housing
Part Number: 163210D011
Other Names: Thermostat Housing, Water Outlet, More Names
Description: Corolla. More Info
Fits:
  • Toyota:
    • Corolla
MSRP $20.81
$17.69
MSRP $20.81
$17.69
Engine Coolant Thermostat Gasket
Part Number: 16341-35010
Other Names: Thermostat Gasket, Water Inlet Gasket, Gasket Water Outlet More Names
Replaces: 16341-65010
Description: All models. 6 cylinder. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Celica,
    • Cressida,
    • Pickup,
    • Supra,
    • T100
  • 1 more
MSRP $3.22
$2.32
MSRP $3.22
$2.32
Engine Coolant Thermostat Housing
Part Number: 16323-0S030
Positions: Lower
Other Names: Housing, Thermostat Housing, Water Inlet, Engine Coolant Inlet Flange, Housing Water Inlet More Names
Replaces: 16323-38050
Description: Tundra. Japan part. Sequoia. 4.6L. Housing. More Info
Fits:
  • Toyota:
    • Sequoia,
    • Tundra
MSRP $73.96
$50.91
MSRP $73.96
$50.91
Engine Coolant Thermostat Gasket
Part Number: 16326-47020
Other Names: Gasket, Water Inlet Gasket, Thermostat Gasket, Thermostat Housing O-Ring, Thermostat Housing Gasket, Water Outlet Gasket, Gasket... More Names
Replaces: 16326-47010
Description: Prius C. RAV4. 2019-20, reservoir & hoses. O-Ring. IQ. 2.5L. Avalon hybrid. 2021, reservoir & hoses. More Info
Notes: 25. More Notes
Fits:
  • Scion:
    • iQ
  • Toyota:
    • Avalon,
    • Camry,
    • Highlander,
    • Prius C,
    • RAV4,
    • RAV4 Prime
  • 2 more
MSRP $0.92
$0.66
MSRP $0.92
$0.66
Engine Coolant Thermostat Housing
Part Number: 16031-24011
Other Names: Thermostat Housing, Water Inlet, Engine Coolant Inlet Flange, Inlet Sub Assembly Wate More Names
Replaces: 16031-24010
Description: 2.0L reservoir & hoses. Water inlet. Corolla. More Info
Fits:
  • Toyota:
    • Corolla
MSRP $58.41
$40.21
MSRP $58.41
$40.21
Engine Coolant Thermostat Housing
Part Number: 16321-65030
Other Names: Thermostat Housing, Water Inlet, Inlet Water More Names
Replaces: 16321-65010, 16321-65020
Description: 6 cylinder. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Pickup,
    • T100
MSRP $55.74
$38.37
MSRP $55.74
$38.37
Engine Coolant Thermostat Housing
Part Number: 16323-0S020
Positions: Lower
Other Names: Water Inlet, Thermostat Housing, Housing Water Inlet More Names
Replaces: 16323-38010
Description: Sequoia. Regular cab, double cab. 5.7L, without tow package. Tundra. Exc.Towing Package. Land Cruiser. Without towing package. More Info
Fits:
  • Toyota:
    • Land Cruiser,
    • Sequoia,
    • Tundra
MSRP $66.00
$45.43
MSRP $66.00
$45.43
Engine Coolant Thermostat Housing
Part Number: 16323-20020
Positions: Lower
Other Names: Thermostat Housing, Housing, Water Inlet, Housing Water Inlet More Names
Replaces: 16323-0A020, 16323-0A021
Description: Sienna. 3.0 & 3.3L. Highlander Hybrid. From 01/2003. More Info
Fits:
  • Toyota:
    • Avalon,
    • Camry,
    • Highlander,
    • Sienna,
    • Solara
MSRP $165.73
$113.58
MSRP $165.73
$113.58
Engine Coolant Thermostat Gasket
Part Number: 16346-66020
Other Names: Gasket Thermostat More Names
Fits:
  • Toyota:
    • Land Cruiser
MSRP $5.60
$4.04
MSRP $5.60
$4.04
Water Inlet Sub-Assembly, With THERMOSTAT
Part Number: 16031-0P010
Other Names: Thermostat, Water Inlet, Inlet Tube, Thermostat Unit, Inlet Sub Assembly Wate More Names
Replaces: 16031-31010, 16031-31011
Description: Fits 4Runner, FJ Cruiser, Tacoma , Tundra Tacoma. Tundra. 4Runner. FJ Cruiser. 4-runner. 6 cylinder. 4.0L, with... More Info
Notes: 10. More Notes
Fits:
  • Toyota:
    • 4Runner,
    • FJ Cruiser,
    • Tacoma,
    • Tundra
MSRP $51.11
$35.19
MSRP $51.11
$35.19
Water Inlet Sub-Assembly, With Thermostat
Part Number: 16031-37010
Other Names: Thermostat Housing, Inlet Sub Assembly Wate More Names
Description: Fits Corolla , Prius, Prius Prime, Prius v Prius V. Prius Prime. Prius AWD-e. Without prime. 1.8L, reservoir &... More Info
Notes: 41. More Notes
Fits:
  • Toyota:
    • Corolla,
    • Prius,
    • Prius AWD-e,
    • Prius Plug-In,
    • Prius Prime,
    • Prius V
  • 1 more
MSRP $55.19
$37.99
MSRP $55.19
$37.99
Engine Coolant Thermostat Housing Gasket
Part Number: 16119-66020
Other Names: Gasket Thermostat G More Names
Fits:
  • Toyota:
    • Land Cruiser
MSRP $6.49
$4.68
MSRP $6.49
$4.68

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