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Thermostat

The Toyota thermostat in the engine acts as a regulation valve that controls the flow of coolant. It is imperative that the engine is allowed to reach a specific temperature before coolant is sent to it. The thermostat controls the amount of coolant going to the radiator and makes it run efficiently, so it's definitely not a part to ignore if there are issues. If your OEM thermostat is going bad, you will see several warning signs. You might notice a high-temperature reading that jumps up within the first fifteen minutes of starting the car. This is known as being in the "red zone" and should be taken extremely seriously. There could also be a low-temperature reading resulting in an underheated engine. Watch for the temperature changing erratically or coolant leaks that signify a problem. If you ignore these signs, you might end up stranded on the side of the road with an engine that isn't working properly. To keep your Toyota's engine running smoothly, you want to replace the defective part with an OEM replacement thermostat. Only OEM thermostats are going to fit the make and model of your vehicle perfectly and allow you to be confident during the installation process. Find the right one for your make and model along with other cooling system parts by browsing below.

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Thermostat
Part Number: 32971-45010
Other Names: Thermostat Transmission More Names
Description: 3.5L, 2017-20. More Info
Fits:
  • Toyota:
    • Sienna
$159.84
$110.02
$159.84
$110.02
Thermostat
Part Number: 32971-WAA01
Other Names: Thermostat Transmission More Names
Fits:
  • Toyota:
    • GR Supra
$86.97
$59.01
$86.97
$59.01
Thermostat
Part Number: 90916-03147
Other Names: Thermostat Element More Names
Description: IQ. More Info
Fits:
  • Scion:
    • iQ
$29.48
$22.15
$29.48
$22.15
Thermostat Housing
Part Number: 16321-10011
Other Names: Engine Coolant Thermostat Housing, Inlet Water More Names
Description: Tercel. Paseo. Water inlet. Manual trans. Liftback, sedan, wagon. More Info
Fits:
  • Toyota:
    • Paseo,
    • Tercel
$55.80
$40.26
$55.80
$40.26
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: Highlander Hybrid. Solara. Avalon. Sienna. Camry. 2008-10. 3.0 & 3.3L. 3.0l, 3.3l. From 01/2003. More Info
Fits:
  • Toyota:
    • Avalon,
    • Camry,
    • Highlander,
    • Sienna,
    • Solara
$70.48
$50.84
$70.48
$50.84
Thermostat Gasket
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
Description: Camry Hybrid. Highlander. Corolla. Sienna. Solara. Matrix. Venza. RAV4. C-HR. XB. XD. TC. IM. 2.5L. 2.4L. O-Ring. Japan part. From... More Info
Fits:
  • Scion:
    • iM,
    • tC,
    • xB,
    • xD
  • Toyota:
    • C-HR,
    • Camry,
    • Corolla,
    • Corolla iM,
    • Highlander,
    • Matrix,
    • RAV4,
    • Sienna,
    • Solara,
    • Venza
  • 9 more
$6.64
$4.99
$6.64
$4.99
Thermostat Unit
Part Number: 32971-34030
Other Names: Thermostat Transmission More Names
Description: 4.6L, with towing package. More Info
Fits:
  • Toyota:
    • Tundra
$159.84
$110.02
$159.84
$110.02
Thermostat Housing
Part Number: 16321-22050
Other Names: Engine Coolant Thermostat Housing, Inlet Water More Names
Replaces: 16321-22060
Description: Celica. MR2. Gt. Type-B. To 04-00. To 05/2000. More Info
Fits:
  • Toyota:
    • Celica,
    • Corolla,
    • MR2 Spyder
$61.46
$44.34
$61.46
$44.34
Thermostat Housing
Part Number: 16321-22070
Other Names: Water Inlet, Engine Coolant Thermostat Housing, Inlet Water More Names
Description: Corolla. Matrix. Celica. MR2. Gt. Type-C. To 05/2000. From 04-00. Without xrs. From 04/2000. More Info
Fits:
  • Toyota:
    • Celica,
    • Corolla,
    • Matrix,
    • MR2 Spyder
$19.91
$14.96
$19.91
$14.96
Thermostat Housing
Part Number: 16331-35051
Other Names: Engine Coolant Thermostat Housing, Outlet Water More Names
Replaces: 16331-35050
Description: Gas. Carb. 4 cylinder. Pick-up, 4-runner. More Info
Fits:
  • Toyota:
    • Pickup
$63.70
$45.96
$63.70
$45.96
Thermostat Housing
Part Number: 16321-11011
Other Names: Engine Coolant Thermostat Housing, Inlet Water More Names
Description: Tercel. Paseo. Auto trans. Water inlet. Liftback, sedan, wagon. More Info
Fits:
  • Toyota:
    • Paseo,
    • Tercel
$55.80
$40.26
$55.80
$40.26
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: FJ Cruiser. Tacoma. 4-runner. From 3/04. 6 cylinder. Japan Built Part. Exc.Towing Package. 4.0L, without oil cooler. 4.0L, without... More Info
Fits:
  • Toyota:
    • 4Runner,
    • FJ Cruiser,
    • Tacoma
$143.63
$98.87
$143.63
$98.87
Thermostat Housing
Part Number: 16323-0P030
Positions: Lower
Other Names: Housing, Water Inlet, Engine Coolant Thermostat Housing, Housing Water Inlet More Names
Description: Highlander. Avalon. Sienna. Venza. Camry. Usa part. Usa built. From 6/10. 3.5L, 2011-16. 3.5L, us built. Exc.Japan Built.... More Info
Fits:
  • Toyota:
    • Avalon,
    • Camry,
    • Highlander,
    • RAV4,
    • Sienna,
    • Venza
  • 1 more
$82.92
$59.82
$82.92
$59.82
Thermostat Gasket
Part Number: 16346-50010
Other Names: Gasket, Gasket Thermostat More Names
Description: Land Cruiser. Sequoia. Tundra. 4.7L. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Land Cruiser,
    • Sequoia,
    • Tundra
$5.52
$4.15
$5.52
$4.15
Thermostat Housing
Part Number: 16321-0F010
Other Names: Water Inlet, Thermostat Cover, Housing, Inlet Tube, Inlet Water More Names
Replaces: 16321-50020
Description: Land Cruiser. Sequoia. Tundra. 4.7L. Cover. Outlet. Water inlet. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Land Cruiser,
    • Sequoia,
    • Tundra
$68.24
$49.24
$68.24
$49.24
Thermostat Housing
Part Number: 16323-31020
Positions: Lower
Other Names: Engine Coolant Thermostat Housing, Multiple-Part Name Code More Names
Description: 4-runner. 6 cylinder. Towing Package. 4.0L, with oil cooler. More Info
Fits:
  • Toyota:
    • 4Runner
$79.85
$57.61
$79.85
$57.61
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: Avalon hybrid. Camry Hybrid. 2.5L. More Info
Notes: Included With Water Inlet W/thermostat. Included With Thermostat Unit. More Notes
Fits:
  • Toyota:
    • Avalon,
    • Camry
$5.32
$4.00
$5.32
$4.00
Thermostat Gasket
Part Number: 16326-37020
Other Names: Thermostat Housing Gasket, Water Inlet Gasket, Gasket Water Inlet More Names
Description: Prius Prime. Prius AWD-e. Prius V. 1.8L, reservoir & hoses, with hybrid le. More Info
Notes: Included With Thermostat Housing. Included With Water Inlet. More Notes
Fits:
  • Toyota:
    • Corolla,
    • Prius,
    • Prius AWD-e,
    • Prius Plug-In,
    • Prius Prime,
    • Prius V
  • 1 more
$5.40
$4.06
$5.40
$4.06
Thermostat Housing
Part Number: 16331-35041
Other Names: Engine Coolant Thermostat Housing, Outlet Water More Names
Replaces: 16331-35040
Description: Celica. 2wd. Gas. 4 cylinder. Fuel injection. Pick-up, 4-runner. Without trailer pkg. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Celica,
    • Pickup
$62.21
$44.88
$62.21
$44.88
Engine Coolant Thermostat
Part Number: 90916-03075
Other Names: Thermostat More Names
Description: Tacoma. Tundra. Celica. Camry. T100. MR2. 3.4L. Gt, gt-s. 4-runner. 6 cylinder. Without turbo. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Camry,
    • Celica,
    • MR2,
    • T100,
    • Tacoma,
    • Tundra
  • 2 more
$31.21
$23.46
$31.21
$23.46
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
Notes: Included With Timing Cover. More Notes
Fits:
  • Scion:
    • xD
  • Toyota:
    • Corolla,
    • Matrix
$8.19
$6.15
$8.19
$6.15
Engine Coolant Thermostat
Part Number: 90916-03125
Other Names: Thermostat More Names
Description: From 07/00. More Info
Fits:
  • Toyota:
    • Celica,
    • Corolla,
    • MR2 Spyder
$28.55
$21.45
$28.55
$21.45
Engine Coolant Thermostat
Part Number: 90916-03136
Other Names: Thermostat More Names
Replaces: 90916-C3001
Description: Camry Hybrid. Highlander. Corolla. Solara. Matrix. RAV4. XB. TC. Japan part. Japan Built. From 10/2005. 2.4L, from 10/05. Engine #... More Info
Fits:
  • Scion:
    • tC,
    • xB
  • Toyota:
    • Camry,
    • Corolla,
    • Highlander,
    • Matrix,
    • RAV4,
    • Solara
  • 3 more
$28.52
$21.44
$28.52
$21.44
Thermostat Housing Stud
Part Number: 90080-11540
Other Names: Engine Coolant Thermostat Housing Stud, Bolt Stud More Names
Replaces: 90116-06070
Description: 3.0L. 3.3L. More Info
Fits:
  • Toyota:
    • Highlander
$1.21
$0.91
$1.21
$0.91
Thermostat Housing Stud
Part Number: 90080-11541
Other Names: Engine Coolant Thermostat Housing Stud, Bolt Stud More Names
Replaces: 92122-60612
Fits:
  • Toyota:
    • Highlander
$1.21
$0.91
$1.21
$0.91
Thermostat Housing Bolt
Part Number: 90105-A0338
Other Names: Engine Coolant Thermostat Housing Bolt, Bolt Flange More Names
Replaces: 90105-06352
Fits:
  • Toyota:
    • Corolla
$0.72
$0.54
$0.72
$0.54
Engine Coolant Thermostat
Part Number: 90916-03046
Other Names: Thermostat More Names
Replaces: 90916-03069
Description: Corolla. Celica. Tercel. Paseo. Camry. RAV4. Van. MR2. St. 1.8L. 2.2L. Coupe. Gt, gt-s. To 2/87. To 3/96. To 02/85. 4 cylinder. From... More Info
Fits:
  • Toyota:
    • Camry,
    • Celica,
    • Corolla,
    • MR2,
    • Paseo,
    • RAV4,
    • Tercel,
    • Van
  • 3 more
$28.69
$21.56
$28.69
$21.56
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
Description: Cressida. Starlet. Celica. Supra. All. Gas. 4 cylinder. Without turbo. Pick-up, 4-runner. Without fuji thomson. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Celica,
    • Corolla,
    • Cressida,
    • Pickup,
    • Starlet,
    • Supra
  • 2 more
$28.52
$21.44
$28.52
$21.44
Engine Coolant Thermostat
Part Number: 90916-03079
Other Names: Thermostat More Names
Description: T100. Gas. 6 cylinder. Without turbo. Pick-up, 4-runner. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Pickup,
    • T100
$35.49
$26.68
$35.49
$26.68
Genuine Toyota Supra (and many others) Engine Coolant Thermostat
Part Number: 90916-03093
Other Names: Thermostat More Names
Description: 4Runner. Tacoma. Yaris. Prius. Supra. Echo. XB. XA. 2.7L. To 08/2015. Gas engine. More Info
Fits:
  • Scion:
    • xA,
    • xB
  • Toyota:
    • 4Runner,
    • Echo,
    • Prius,
    • Supra,
    • Tacoma,
    • Yaris
  • 3 more
$28.69
$21.56
$28.69
$21.56
Engine Coolant Thermostat
Part Number: 90916-03138
Other Names: Thermostat More Names
Description: Sequoia. Tundra. 4.7L. 4-runner. 8 cylinder. From 07/2006. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Land Cruiser,
    • Sequoia,
    • Tundra
$48.96
$36.79
$48.96
$36.79
Engine Coolant Thermostat
Part Number: 90916-A3003
Other Names: Thermostat More Names
Replaces: 90916-03084, 90916-03129
Description: Highlander Hybrid. Corolla. Avalon. Solara. Celica. Sienna. Matrix. Venza. Camry. RAV4. MR2. TC. XD. 3.0L. 2.5L. Gt-s. Type-B. 2008-10.... More Info
Fits:
  • Scion:
    • tC,
    • xD
  • Toyota:
    • Avalon,
    • Camry,
    • Celica,
    • Corolla,
    • Highlander,
    • Matrix,
    • MR2 Spyder,
    • RAV4,
    • Sienna,
    • Solara,
    • Venza
  • 8 more
$28.55
$21.45
$28.55
$21.45
Engine Coolant Thermostat
Part Number: 90916-03090
Other Names: Thermostat More Names
Replaces: 90916-03060
Description: Corolla. Celica. Camry. RAV4. MR2. 2.2L. Coupe. Gt, gt-s. With gts. From 2/87. From 3/96. 4 cylinder. From 02/1987. Without turbo. More Info
Fits:
  • Toyota:
    • Camry,
    • Celica,
    • Corolla,
    • MR2,
    • RAV4,
    • Solara
  • 1 more
$31.52
$23.69
$31.52
$23.69
Engine Coolant Thermostat
Part Number: 90916-03145
Other Names: Thermostat More Names
Description: Corolla. Matrix. Vendor:fuji seiko. 1.8L, auto trans, type c. 1.8L, japan built, type c. More Info
Notes: Order By Description. More Notes
Fits:
  • Scion:
    • xD
  • Toyota:
    • Corolla,
    • Matrix
$28.49
$21.41
$28.49
$21.41
Engine Coolant Thermostat Housing
Part Number: 16321-65030
Other Names: Thermostat Housing, Water Inlet, Inlet Water More Names
Replaces: 16321-65010, 16321-65020
Description: T100. 6 cylinder. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Pickup,
    • T100
$55.05
$39.72
$55.05
$39.72
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: Land Cruiser. Sequoia. Tundra. Exc.Towing Package. Regular cab, double cab. 5.7L, without towing package. More Info
Fits:
  • Toyota:
    • Land Cruiser,
    • Sequoia,
    • Tundra
$64.85
$46.79
$64.85
$46.79
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: Sequoia. Tundra. 4.6L. Housing. Manufactured outside jpn. More Info
Fits:
  • Toyota:
    • Sequoia,
    • Tundra
$72.75
$52.49
$72.75
$52.49
Engine Coolant Thermostat Gasket
Part Number: 16341-35010
Other Names: Thermostat Gasket, Water Inlet Gasket, Gasket Water Outlet More Names
Replaces: 16341-65010
Description: 6 cylinder. All models. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Celica,
    • Cressida,
    • Pickup,
    • Supra,
    • T100
  • 1 more
$3.16
$2.38
$3.16
$2.38
Engine Coolant Thermostat Housing
Part Number: 16323-0P020
Positions: Lower
Other Names: Water Inlet, Thermostat Housing, Housing, Housing Water Inlet More Names
Replaces: 16323-31021
Description: 4Runner. Tacoma. Tundra. Exc.Japan Built Part. 4.0L, with oil cooler. 4.0L, with towing package. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Tacoma,
    • Tundra
$114.99
$79.15
$114.99
$79.15
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: Highlander Hybrid. Sienna. 3.0 & 3.3L. From 01/2003. More Info
Fits:
  • Toyota:
    • Avalon,
    • Camry,
    • Highlander,
    • Sienna,
    • Solara
$148.52
$102.24
$148.52
$102.24
Engine Coolant Thermostat Gasket
Part Number: 16325-62010
Other Names: Thermostat Gasket, Gasket, Thermostat Seal, Water Inlet Gasket, Water Inlet Seal, Thermostat Housing Gasket, Engine Coolant... More Names
Replaces: 16325-0H020
Description: Highlander Hybrid. Corolla. Tundra. Avalon. Sienna. Solara. Celica. Camry. Yaris. Venza. Prius. Supra. Echo. RAV4. MR2. XD. XB. XA.... More Info
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
$7.01
$5.26
$7.01
$5.26
Engine Coolant Thermostat Gasket
Part Number: 16325-76010
Other Names: Gasket, Thermostat O-Ring, Thermostat Gasket, Gasket Water Inlet More Names
Replaces: 16325-0C030
Description: 4Runner. Tacoma. 2.7L. O-Ring. From 03/96. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Previa,
    • T100,
    • Tacoma
$6.64
$4.99
$6.64
$4.99
Engine Coolant Thermostat Gasket
Part Number: 16326-47020
Other Names: Thermostat Gasket, Thermostat Housing O-Ring, Gasket Water Inlet More Names
Replaces: 16326-47010
Description: Avalon hybrid. RAV4. O-Ring. Without hybrid, reservoir & hoses. More Info
Notes: Included With Thermostat Housing. More Notes
Fits:
  • Toyota:
    • Avalon,
    • Camry,
    • RAV4
$0.86
$0.65
$0.86
$0.65
Engine Coolant Thermostat Housing
Part Number: 16031-24010
Other Names: Thermostat Housing, Water Inlet, Inlet Sub-Assembly Wate More Names
Description: Corolla hatchback. More Info
Notes: Includes Thermostat. More Notes
Fits:
  • Toyota:
    • Corolla
$95.62
$65.83
$95.62
$65.83
Engine Coolant Thermostat Gasket
Part Number: 16346-66020
Other Names: Gasket Thermostat More Names
Fits:
  • Toyota:
    • Land Cruiser
$5.52
$4.15
$5.52
$4.15
Engine Coolant Thermostat Housing Gasket
Part Number: 16325-0P020
Other Names: Thermostat Housing Gasket, Thermostat Housing Seal, Housing Gasket, Gasket Water Inlet More Names
Description: To 07/2007. From 07/2007. 3.5L, us built. Exc.Japan Built. Engine # axxxxxx-gxxxxxx. Engine # dxxxxxx-gxxxxxx. Engine # axxxxxx-lxxxxxx.... More Info
Fits:
  • Toyota:
    • Avalon,
    • Camry,
    • Highlander,
    • RAV4,
    • Sienna,
    • Venza
  • 1 more
$2.33
$1.75
$2.33
$1.75
Engine Coolant Thermostat Housing Gasket
Part Number: 16325-31010
Other Names: Housing Gasket, Thermostat Housing Gasket, Thermostat Gasket, Thermostat Housing Seal, Gasket Water Inlet More Names
Description: RAV4. 2011-13. Exc.Japan Built. 3.5L, japan built. Japan Built Part. Engine # jxxxxxx-lxxxxxx. Engine # axxxxxx-cxxxxxx. Engine #... More Info
Fits:
  • Toyota:
    • 4Runner,
    • Avalon,
    • Camry,
    • FJ Cruiser,
    • Highlander,
    • RAV4,
    • Sienna,
    • Tacoma,
    • Tundra,
    • Venza
  • 5 more
$1.93
$1.45
$1.93
$1.45
Engine Coolant Thermostat Housing Gasket
Part Number: 16119-66020
Other Names: Gasket Thermostat G More Names
Fits:
  • Toyota:
    • Land Cruiser
$6.38
$4.79
$6.38
$4.79
Thermostat
Part Number: 90916-03100
Description: Land Cruiser. Sequoia. Tundra. 4.0L. 4.7L. 4-runner. 8 cylinder. More Info
Fits:
  • Toyota:
    • 4Runner,
    • Land Cruiser,
    • Sequoia,
    • Tundra
$28.60
$21.50
$28.60
$21.50
Thermostat
Part Number: 90916-03115
Replaces: 90916-03109
Description: Celica. St. More Info
Fits:
  • Toyota:
    • Celica
$35.49
$26.68
$35.49
$26.68

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