Toyota Thermostats

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The thermostat in your Toyota vehicle has one role, and it does it rather well. It's responsible for regulating the temperature of your engine. It does this in response to coolant temperature changes.

How an Automotive Thermostat Works

The thermostat features a wax that expands when the engine temperature gets too high. That expansion opens a value that allows coolant to flow from the radiator to the engine, where it collects the engine heat. The coolant then returns to the radiator, where the heat is dispersed through the radiator's flat surface into the atmosphere.

How to Spot a Failing Thermostat

Thermostats don't go bad often, but there are signs of failure. These include:

  • The "Check Engine" dash light engages
  • Your engine begins to overheat
  • The engine runs less efficiently
  • You have HVAC problems

Buy Your Genuine OEM Thermostat Online

If you're experiencing any of these symptoms, conduct a full inspection to determine the source of the trouble. If your thermostat needs replacing, your best option is to go with a real-deal one from Toyota. Not only is it made specifically to work with your model, but it's also guaranteed compatible. Find everything you need for the project right here in our online auto parts catalog, in stock and ready to ship. Order now and save!

Thermostat
MSRP $162.34
$109.19
Part Number: 32971-48030
Other Names: Thermostat Transmission More Names
Description: 3.5L. More Info
Fits:
  • Toyota:
    • Highlander
Thermostat
MSRP $29.51
$19.85
Part Number: 90916-03147
Other Names: Thermostat Element More Names
Description: IQ. More Info
Fits:
  • Scion:
    • iQ
Thermostat
MSRP $162.34
$109.19
Part Number: 32971-45010
Other Names: Thermostat Transmission More Names
Description: 3.5L, 2017-20. More Info
Fits:
  • Toyota:
    • Sienna
Thermostat
MSRP $86.97
$58.50
Part Number: 32971-WAA01
Other Names: Thermostat Transmission More Names
Description: 3.0L. 2.0L. More Info
Fits:
  • Toyota:
    • GR Supra
Thermostat Housing
MSRP $84.19
$56.62
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
Thermostat Gasket
MSRP $5.49
$3.89
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
Thermostat Gasket
MSRP $5.60
$3.97
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
Thermostat Unit
MSRP $162.34
$109.19
Part Number: 32971-34030
Other Names: Thermostat Transmission More Names
Description: 4.6L, with towing package. More Info
Fits:
  • Toyota:
    • Tundra
Water Inlet Sub-Assembly, With THERMOSTAT
MSRP $51.11
$34.38
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
Thermostat Housing
MSRP $56.52
$38.02
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
Thermostat Housing
MSRP $62.58
$42.09
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
Thermostat Housing
MSRP $20.26
$13.63
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
Thermostat Housing
MSRP $146.02
$98.22
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
Gasket, Water Inlet Housing, No. 1
MSRP $6.75
$4.78
Part Number: 16325-0T030
Other Names: Thermostat Seal, Thermostat Housing Seal, Gasket, Water Inlet Gasket, Engine Coolant Thermostat Seal, Engine Coolant Thermostat... More Names
Replaces: 16325-0H030, 16325-28010
Fits:
  • Scion:
    • iM,
    • tC,
    • xB,
    • xD
  • Toyota:
    • C-HR,
    • Camry,
    • Corolla,
    • Corolla iM,
    • Highlander,
    • Matrix,
    • RAV4,
    • Sienna,
    • Solara,
    • Venza
  • 9 more
Thermostat Housing
MSRP $64.85
$43.62
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
Thermostat Housing
MSRP $78.90
$53.06
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
Thermostat Housing
MSRP $56.52
$38.02
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
Thermostat Housing
MSRP $78.90
$53.06
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
Thermostat Housing
MSRP $79.85
$53.71
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
Thermostat Gasket
MSRP $5.43
$3.84
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
Thermostat Housing
MSRP $63.33
$42.59
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
Engine Coolant Thermostat
MSRP $35.46
$23.85
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
Engine Coolant Thermostat
MSRP $28.55
$19.20
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
Thermostat Housing Stud
MSRP $1.44
$1.13
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
Thermostat Housing Stud
MSRP $1.44
$1.13
Part Number: 90080-11541
Other Names: Engine Coolant Thermostat Housing Stud, Bolt Stud More Names
Replaces: 92122-60612
Fits:
  • Toyota:
    • Highlander
Thermostat Housing Bolt
MSRP $0.75
$0.59
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
Engine Coolant Thermostat
MSRP $35.49
$23.85
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
Engine Coolant Thermostat
MSRP $28.71
$19.31
Part Number: 90916-03093
Other Names: Thermostat More Names
Fits:
  • Scion:
    • xA,
    • xB
  • Toyota:
    • 4Runner,
    • Echo,
    • Prius,
    • Supra,
    • Tacoma,
    • Yaris
  • 3 more
Engine Coolant Thermostat
MSRP $35.77
$24.05
Part Number: 90916-03090
Other Names: Thermostat More Names
Replaces: 90916-03060
Fits:
  • Toyota:
    • Camry,
    • Celica,
    • Corolla,
    • MR2,
    • RAV4,
    • Solara
  • 1 more
Engine Coolant Thermostat
MSRP $49.10
$33.03
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
Engine Coolant Thermostat
MSRP $28.58
$19.22
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
Engine Coolant Thermostat
MSRP $28.71
$19.31
Part Number: 90916-03046
Other Names: Thermostat More Names
Replaces: 90916-03069
Fits:
  • Toyota:
    • Camry,
    • Celica,
    • Corolla,
    • MR2,
    • Paseo,
    • RAV4,
    • Tercel,
    • Van
  • 3 more
Engine Coolant Thermostat
MSRP $28.55
$19.20
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
Engine Coolant Thermostat
MSRP $28.58
$19.22
Part Number: 90916-03125
Other Names: Thermostat More Names
Description: From 07/00. More Info
Fits:
  • Toyota:
    • Celica,
    • Corolla,
    • MR2 Spyder
Engine Coolant Thermostat
MSRP $28.52
$19.19
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
Thermostat Housing Gasket
MSRP $8.33
$5.90
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
Engine Coolant Thermostat Gasket
MSRP $3.22
$2.47
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
Engine Coolant Thermostat Housing
MSRP $73.96
$49.74
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
Gasket
MSRP $6.75
$4.78
Part Number: 16325-76010
Other Names: Gasket, Thermostat O-Ring, Thermostat Gasket, Gasket Water Inlet More Names
Replaces: 16325-0C030
Description: Water Inlet Housing, No. 1; Water Inlet Housing, No. 2. Fits 4Runner, Previa, T100, Tacoma... More Info
Fits:
  • Toyota:
    • 4Runner,
    • Previa,
    • T100,
    • Tacoma
Engine Coolant Thermostat Gasket
MSRP $0.92
$0.72
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
Engine Coolant Thermostat Housing
MSRP $58.41
$39.29
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
Engine Coolant Thermostat Housing
MSRP $55.74
$37.49
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
Engine Coolant Thermostat Housing
MSRP $66.00
$44.39
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
Engine Coolant Thermostat Housing
MSRP $165.73
$111.47
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
Gasket, Water Inlet Housing, No. 1
MSRP $7.13
$5.04
Part Number: 16325-62010
Other Names: Thermostat Gasket, Gasket, Thermostat Seal, Water Inlet Gasket, Water Inlet Seal, Thermostat Housing Gasket, Thermostat, Engine... More Names
Replaces: 16325-0H020
Fits:
  • Scion:
    • xA,
    • xB,
    • xD
  • Toyota:
    • 4Runner,
    • Avalon,
    • Camry,
    • Celica,
    • Corolla,
    • Echo,
    • Highlander,
    • Matrix,
    • MR2,
    • MR2 Spyder,
    • Previa,
    • Prius,
    • RAV4,
    • Sienna,
    • Solara,
    • Supra,
    • T100,
    • Tacoma,
    • Tundra,
    • Venza,
    • Yaris
  • 19 more
Engine Coolant Thermostat Gasket
MSRP $5.60
$3.97
Part Number: 16346-66020
Other Names: Gasket Thermostat More Names
Fits:
  • Toyota:
    • Land Cruiser
Engine Coolant Thermostat Housing Gasket
MSRP $6.49
$4.59
Part Number: 16119-66020
Other Names: Gasket Thermostat G More Names
Fits:
  • Toyota:
    • Land Cruiser
Engine Coolant Thermostat Housing Gasket
MSRP $1.98
$1.52
Part Number: 16325-31010
Other Names: Housing Gasket, Thermostat Housing Gasket, Thermostat Gasket, Thermostat Housing Seal, Gasket Water Inlet More Names
Description: Engine # 0xxxxxx-9xxxxxx. Japan Built Part. 3.5L, japan built. RAV4. 2011-13. Exc.Japan Built. Engine # 0xxxxxx-5xxxxxx. Engine #... More Info
Fits:
  • Toyota:
    • 4Runner,
    • Avalon,
    • Camry,
    • FJ Cruiser,
    • Highlander,
    • RAV4,
    • Sienna,
    • Tacoma,
    • Tundra,
    • Venza
  • 5 more
Engine Coolant Thermostat Housing Gasket
MSRP $2.38
$1.83
Part Number: 16325-0P020
Other Names: Thermostat Housing Gasket, Thermostat Housing Seal, Housing Gasket, Gasket Water Inlet More Names
Description: Engine # 6xxxxxx-84xxxxx. Engine # axxxxxx-lxxxxxx. Exc.Japan Built. Engine # dxxxxxx-gxxxxxx. 3.5L, without hybrid, 2014-16. Engine #... More Info
Fits:
  • Toyota:
    • Avalon,
    • Camry,
    • Highlander,
    • RAV4,
    • Sienna,
    • Venza
  • 1 more
Thermostat
MSRP $35.49
$23.85
Part Number: 90916-03115
Replaces: 90916-03109
Description: Celica. St. More Info
Fits:
  • Toyota:
    • Celica

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