Thermostats

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Ensuring that your car is operating at the right temperature is very important. Two of the most important parts of your car that help to provide you with an accurate temperature reading are the thermostat gasket and the thermostat housing unit. When you are looking for a thermostat replacement, you will need to also make a thermostat housing replacement. Fortunately, you can find all of the thermostat parts and accessories that you need online, and especially here, through The Parts Specialist. Through us, we have thermostats available to fit a wide variety of different Lexus models, which can make them very easy to install and use. A faulty thermostat can result in your Lexus overheating, which can even possibly result in a blown-up engine. Always look for genuine Lexus parts for replacement; this way you are sure to get a thermostat that is made to keep your Lexus engine running at the exact temperature that the Lexus engineers intended. After all, this can significantly help extend the life of your vehicle. When you purchase OEM thermostats through The Parts Specialist, you're receiving genuine components that are designed specifically with your vehicle in mind. When it comes to car parts, you should never settle for anything less. Below, you can find our wide selection of OEM thermostats and thermostat housing. Select the ones that your Lexus needs the most, and you can let The Parts Specialist handle the rest. Soon, the internal temperatures in your Lexus will be safely regulated, drive after drive.

Thermostat Unit
Part Number: 16031-36010
Other Names: Thermostat, Water Inlet, Inlet Sub-Assembly, Wate More Names
Description: ES300h. 2.5L. More Info
Notes: Includes Thermostat. More Notes
Fits:
  • Lexus:
    • ES300h
$51.00
$39.86
$51.00
$39.86
Thermostat Housing
Part Number: 16323-0P030
Positions: Lower
Other Names: Engine Coolant Thermostat Housing, Housing, Water Inlet More Names
Description: RX350. ES350. Canada built. Exc.Japan Built. Engine # axxxxxx-gxxxxxx. Usa built. More Info
Fits:
  • Lexus:
    • ES350,
    • RX350
$83.75
$62.43
$83.75
$62.43
Thermostat Gasket
Part Number: 16325-62010
Other Names: Engine Coolant Thermostat Gasket, Thermostat Housing Gasket, Thermostat Seal, Gasket, Water Inlet Seal, Water Inlet Gasket, Gasket,... More Names
Replaces: 16325-0H020
Fits:
  • Lexus:
    • ES250,
    • ES300,
    • ES330,
    • ES350,
    • GS300,
    • IS300,
    • LS400,
    • RX300,
    • RX330,
    • RX350,
    • RX400h,
    • RX450h,
    • SC300,
    • SC400
  • 9 more
$7.07
$5.53
$7.07
$5.53
Thermostat Housing
Part Number: 16321-46040
Other Names: Thermostat Cover, Inlet, Water More Names
Replaces: 16321-46030
Description: SC300, GS300. IS300. 3.0L. More Info
Fits:
  • Lexus:
    • GS300,
    • IS300,
    • SC300
$41.49
$32.42
$41.49
$32.42
Thermostat Housing
Part Number: 16323-0S020
Positions: Lower
Other Names: Engine Coolant Thermostat Housing, Housing, Water Inlet More Names
Replaces: 16323-38010
Description: LX570. Without tow package. Exc.Towing Package. More Info
Fits:
  • Lexus:
    • LX570
$65.48
$51.18
$65.48
$51.18
Thermostat Gasket
Part Number: 16325-0T030
Other Names: Thermostat Seal, Gasket, Water Inlet More Names
Replaces: 16325-28010
Description: NX300h. 2.5L. Hs hybrid. More Info
Fits:
  • Lexus:
    • HS250h,
    • NX300h
$6.69
$5.23
$6.69
$5.23
Engine Coolant Thermostat
Part Number: 90916-03100
Other Names: Thermostat More Names
Fits:
  • Lexus:
    • GS400,
    • GS430,
    • GX470,
    • LS400,
    • LS430,
    • LX470,
    • SC400,
    • SC430
  • 3 more
$28.63
$22.37
$28.63
$22.37
Thermostat Unit Seal
Part Number: 16325-36010
Other Names: Thermostat Gasket, Gasket, Water Inlet More Names
Description: ES300h. 2.5L. More Info
Notes: Included with thermostat unit. More Notes
Fits:
  • Lexus:
    • ES300h
$5.37
$4.20
$5.37
$4.20
Thermostat Housing Gasket
Part Number: 16325-0P020
Other Names: Engine Coolant Thermostat Housing Gasket, Gasket, Water Inlet More Names
Description: Canada built. Engine # axxxxxx-gxxxxxx. Exc.Japan Built Part. More Info
Fits:
  • Lexus:
    • ES350,
    • RX350
$2.36
$1.85
$2.36
$1.85
Engine Coolant Thermostat
Part Number: 90916-03075
Other Names: Thermostat More Names
Description: 1992-93. More Info
Fits:
  • Lexus:
    • ES250,
    • ES300
$35.52
$27.76
$35.52
$27.76
Engine Coolant Thermostat
Part Number: 90916-03138
Other Names: Thermostat More Names
Description: SC430. GX470. GS430. From 07/2006. More Info
Fits:
  • Lexus:
    • GS430,
    • GX470,
    • LX470,
    • SC430
$48.99
$38.29
$48.99
$38.29
Thermostat Housing Gasket
Part Number: 16346-32010
Other Names: Engine Coolant Thermostat Gasket, Thermostat Gasket, Gasket, Thermostat More Names
Replaces: 16346-17010
Description: 4.0L. From 07/97. O-Ring. To 01/1998. 1998-00, to 1/98. 4.3L. More Info
Fits:
  • Lexus:
    • GS400,
    • GS430,
    • LS400,
    • SC400
$4.19
$3.28
$4.19
$3.28
Thermostat Housing O-Ring
Part Number: 16325-38010
Other Names: Water Inlet Gasket, Engine Coolant Thermostat Housing Gasket, Gasket, Water Inlet More Names
Fits:
  • Lexus:
    • GX460,
    • LX570
$2.36
$1.85
$2.36
$1.85
Engine Coolant Thermostat Housing
Part Number: 16321-50010
Positions: Upper
Other Names: Thermostat Cover, Water Inlet, Inlet, Water More Names
Description: 1992-97. To 09/97. More Info
Fits:
  • Lexus:
    • LS400,
    • SC400
$41.44
$32.38
$41.44
$32.38
Engine Coolant Thermostat Housing
Part Number: 16321-20030
Positions: Upper
Other Names: Thermostat Housing, Water Inlet, Water Outlet, Inlet Pipe, Inlet, Water More Names
Replaces: 16321-0A030
Description: ES300. RX300. ES330. RX400h. Type-A. Short Outlet wo/Mounting Tab. 2004-06, japan built, type 1. More Info
Fits:
  • Lexus:
    • ES300,
    • ES330,
    • RX300,
    • RX330,
    • RX400h
$78.44
$61.31
$78.44
$61.31
Engine Coolant Thermostat Gasket
Part Number: 16346-50010
Other Names: Thermostat Gasket, Gasket, Water Inlet Gasket, Thermostat Housing Gasket, Thermostat Seal, Gasket, Thermostat More Names
Description: LX470. GX470. GS430. O-Ring. 4.3L. 1998-00, from 1-98. From 01/1998. More Info
Fits:
  • Lexus:
    • GS400,
    • GS430,
    • GX470,
    • LS400,
    • LS430,
    • LX470,
    • SC400,
    • SC430
  • 3 more
$5.55
$4.33
$5.55
$4.33
Engine Coolant Thermostat Gasket
Part Number: 16346-66020
Other Names: Gasket, Thermostat More Names
Fits:
  • Lexus:
    • LX450
$5.55
$4.33
$5.55
$4.33
Engine Coolant Thermostat Housing Gasket
Part Number: 16119-66020
Other Names: Gasket, Thermostat G More Names
Fits:
  • Lexus:
    • LX450
$6.44
$5.03
$6.44
$5.03
Thermostat
Part Number: 90916-03093
Description: SC300, GS300. IS300. 3.0L. More Info
Fits:
  • Lexus:
    • GS300,
    • IS300,
    • SC300
$28.69
$22.43
$28.69
$22.43
Thermostat
Part Number: 90916-03136
Description: Hs hybrid. More Info
Fits:
  • Lexus:
    • HS250h
$28.52
$22.30
$28.52
$22.30
Thermostat
Part Number: 90916-03156
Positions: Left, Right
Notes: Part Of Water Inlet On Not Serviced Model Years. More Notes
Fits:
  • Lexus:
    • GS200t,
    • GS300,
    • IS200t,
    • IS300,
    • NX200t,
    • NX300,
    • RC Turbo,
    • RC200t,
    • RC300
  • 4 more
$63.36
$49.49
$63.36
$49.49
Thermostat
Part Number: 90916-A3002
Replaces: 90916-03133, 90916-03140, 90916-A3001
Description: RX350. ES350. RX450h. Japan built. 3.5L. 2007-09. More Info
Fits:
  • Lexus:
    • ES350,
    • RX350,
    • RX450h
$28.52
$22.30
$28.52
$22.30
Thermostat
Part Number: 90916-A3003
Replaces: 90916-03084, 90916-03129
Description: LS400, SC400. ES300. RX300. ES330. RX400h. 1992-97. 1994-96. 2004-06. More Info
Fits:
  • Lexus:
    • ES300,
    • ES330,
    • LS400,
    • RX300,
    • RX330,
    • RX400h,
    • SC400
  • 2 more
$28.58
$22.33
$28.58
$22.33
Thermostat
Part Number: 16342-70010
Other Names: Valve, Water Control More Names
Description: LS500. Water control valve. More Info
Fits:
  • Lexus:
    • LS500
$905.44
$642.32
$905.44
$642.32
Thermostat
Part Number: 90916-03117
Replaces: 90916-03094
Description: LX450. More Info
Fits:
  • Lexus:
    • LX450
$31.52
$24.64
$31.52
$24.64
Thermostat
Part Number: 90916-03154
Positions: Right, Left
Notes: Part Of Water Inlet On Not Serviced Model Years. More Notes
Fits:
  • Lexus:
    • GS Turbo,
    • GS200t,
    • GS300,
    • IS200t,
    • IS300,
    • NX200t,
    • NX300,
    • RC Turbo,
    • RC200t,
    • RC300
  • 5 more
$35.88
$28.04
$35.88
$28.04
Thermistor
Part Number: 88620-0R010
Other Names: Thermostat Assembly More Names
Replaces: 88620-28060
Description: 250h. More Info
Notes: Included with AC & heater asssembly. More Notes
Fits:
  • Lexus:
    • UX250h
$40.44
$31.60
$40.44
$31.60
Water Inlet
Part Number: 16031-0S010
Other Names: Thermostat Unit, Thermostat Housing, Thermostat, Inlet Sub-Assembly, Wate More Names
Replaces: 16031-38010
Notes: Included with inlet assembly. Includes Thermostat And Gasket. More Notes
Fits:
  • Lexus:
    • GS F,
    • GS460,
    • GX460,
    • IS F,
    • LC500,
    • LS460,
    • LS600h,
    • LX570,
    • RC F
  • 4 more
$55.11
$43.07
$55.11
$43.07
Water Inlet
Part Number: 16321-0F010
Positions: Upper
Other Names: Thermostat Housing, Engine Coolant Thermostat Housing, Thermostat Cover, Inlet, Water More Names
Replaces: 16321-50020
Description: LX470. GX470. GS400. GS430. Cover. 1998-00. 4.0L. 4.3L. From 07/97. More Info
Fits:
  • Lexus:
    • GS400,
    • GS430,
    • GX470,
    • LS400,
    • LS430,
    • LX470,
    • SC400,
    • SC430
  • 3 more
$68.90
$53.85
$68.90
$53.85
Gasket
Part Number: 16346-36011
Positions: Left, Right
Other Names: Water Inlet Gasket, Thermostat Gasket, Gasket, Thermostat More Names
Replaces: 16346-36010
Fits:
  • Lexus:
    • GS Turbo,
    • GS200t,
    • GS300,
    • IS200t,
    • IS300,
    • NX200t,
    • NX300,
    • RC Turbo,
    • RC200t,
    • RC300
  • 5 more
$6.16
$4.81
$6.16
$4.81
Water Inlet
Part Number: 16031-31020
Other Names: Thermostat Housing, Thermostat Unit, Engine Coolant Thermostat Kit, Inlet Sub-Assembly, Wate More Names
Notes: Included with inlet assembly. Includes Thermostat And Gasket. More Notes
Fits:
  • Lexus:
    • GS300,
    • GS350,
    • GS450h,
    • IS250,
    • IS300,
    • IS350,
    • RC300,
    • RC350
  • 3 more
$71.71
$56.04
$71.71
$56.04
Water Inlet Gasket
Part Number: 16326-38010
Other Names: Gasket, Thermostat Unit Gasket, Thermostat Housing O-Ring, Thermostat Seal, Thermostat Unit O-Ring, Gasket, Water Inlet More Names
Notes: Included with water inlet. Included with thermostat housing. More Notes
Fits:
  • Lexus:
    • GS F,
    • GS460,
    • GX460,
    • IS F,
    • LC500,
    • LS460,
    • LS600h,
    • LX570,
    • RC F
  • 4 more
$5.52
$4.32
$5.52
$4.32
Water Inlet
Part Number: 16321-20010
Other Names: Thermostat Housing, Inlet, Water More Names
Replaces: 16321-0A020
Description: ES300. 1994-96. More Info
Fits:
  • Lexus:
    • ES300
$95.19
$70.97
$95.19
$70.97
Water Inlet
Part Number: 16321-0H011
Other Names: Thermostat Housing, Inlet, Water More Names
Replaces: 16321-0H010, 16321-28020
Description: Hs hybrid. More Info
Fits:
  • Lexus:
    • HS250h
$33.82
$26.43
$33.82
$26.43
Gasket
Part Number: 16326-31020
Other Names: Water Inlet Gasket, Thermostat Housing Gasket, Thermostat Unit Gasket, Engine Coolant Thermostat Gasket, Gasket, Water Inlet More Names
Replaces: 16326-31010
Notes: Included with water inlet. Included with thermostat housing. More Notes
Fits:
  • Lexus:
    • GS300,
    • GS350,
    • GS450h,
    • IS250,
    • IS300,
    • IS350,
    • RC300,
    • RC350
  • 3 more
$1.32
$1.03
$1.32
$1.03
Engine Coolant Pipe O-Ring
Part Number: 96761-35035
Positions: Lower
Other Names: Housing Gasket, Thermostat Housing O-Ring, Thermostat Housing Seal, Ring, O More Names
Description: Lower Thermostat Housing. 4.3L. More Info
Fits:
  • Lexus:
    • GS F,
    • GS400,
    • GS430,
    • GS460,
    • GX460,
    • GX470,
    • IS F,
    • LC500,
    • LS400,
    • LS430,
    • LS460,
    • LS600h,
    • LX470,
    • LX570,
    • RC F,
    • SC400,
    • SC430
  • 12 more
$4.60
$3.59
$4.60
$3.59
Water Inlet
Part Number: 16031-24021
Other Names: Thermostat, Inlet Sub-Assembly, Wate More Names
Replaces: 16031-24020
Description: UX250h. More Info
Fits:
  • Lexus:
    • UX250h
$68.79
$53.76
$68.79
$53.76
Water Inlet
Part Number: 16323-0S010
Other Names: Thermostat Housing, Housing, Water Inlet More Names
Replaces: 16323-38020
Description: LX570. With tow package. All. More Info
Fits:
  • Lexus:
    • LX570
$66.63
$52.08
$66.63
$52.08
Water Manifold Gasket
Part Number: 16345-F0020
Other Names: Thermostat Gasket, Gasket, Water Outlet More Names
Replaces: 16345-25030
Description: ES300h. 2.5L. More Info
Notes: Part cannot be reused/reinstalled. More Notes
Fits:
  • Lexus:
    • ES300h
$4.08
$3.19
$4.08
$3.19
Housing Stud
Part Number: 92122-B0825
Other Names: Thermostat Housing Stud, Bolt, Stud More Names
Notes: Included with thermostat housing. More Notes
Fits:
  • Lexus:
    • GX470,
    • SC430
$1.70
$1.33
$1.70
$1.33
Water Inlet
Part Number: 16031-24011
Other Names: Thermostat, Inlet Sub-Assembly, Wate More Names
Replaces: 16031-24010
Description: UX200. More Info
Fits:
  • Lexus:
    • UX200
$57.87
$45.23
$57.87
$45.23
Water Inlet
Part Number: 16323-38040
Other Names: Thermostat Housing, Housing, Water Inlet More Names
Description: LS600h L. 5.0L. More Info
Fits:
  • Lexus:
    • LS600h
$67.80
$52.99
$67.80
$52.99
Water Inlet
Part Number: 16031-31031
Other Names: Thermostat, Inlet Sub-Assembly, Wate More Names
Replaces: 16031-31030
Description: RX350. RX450h. ES350. Without hybrid. 3.5L. More Info
Notes: Includes Thermostat And Gasket. More Notes
Fits:
  • Lexus:
    • ES350,
    • RX350,
    • RX350L,
    • RX450h
$61.69
$48.22
$61.69
$48.22
Water Inlet Seal
Part Number: 16326-37020
Other Names: Thermostat Gasket, Gasket, Water Inlet More Names
Description: CT200h. More Info
Notes: Included with water inlet. More Notes
Fits:
  • Lexus:
    • CT200h
$5.43
$4.24
$5.43
$4.24
Gasket
Part Number: 16325-36051
Positions: Inner, Right, Left
Other Names: Water Outlet Gasket, Thermostat Gasket, Engine Coolant Thermostat Gasket, Gasket, Water Inlet More Names
Description: IS300. IS200t. GS200t. GS300. 2.0L, #1. Inner Thermostat. Right. Left. For t-stat: wax 78-91. More Info
Fits:
  • Lexus:
    • GS200t,
    • GS300,
    • IS200t,
    • IS300,
    • IS350,
    • NX200t,
    • NX300,
    • RC200t,
    • RC300
  • 4 more
$7.52
$5.88
$7.52
$5.88
Water Inlet O-Ring
Part Number: 16326-31050
Other Names: Water Inlet Gasket, Thermostat Gasket, Gasket, Engine Coolant Thermostat Gasket, Gasket, Water Inlet More Names
Description: GS350. IS300. IS350. RC300. RC350. LS500h. RX350L. RX450hL. 3.5L, without hybrid. O-Ring. More Info
Notes: Included with water inlet. More Notes
Fits:
  • Lexus:
    • ES350,
    • GS350,
    • IS300,
    • IS350,
    • LC500h,
    • LS500h,
    • RC300,
    • RC350,
    • RX350,
    • RX350L,
    • RX450h,
    • RX450hL
  • 7 more
$0.69
$0.53
$0.69
$0.53
Water Inlet
Part Number: 16031-25011
Other Names: Thermostat Unit, Inlet Sub-Assembly, Wate More Names
Replaces: 16031-25010
Description: ES300h. 2.5L. More Info
Notes: Includes Thermostat. Part has related components that cannot be reused/reinstalled; seal. More Notes
Fits:
  • Lexus:
    • ES300h
$61.69
$48.22
$61.69
$48.22
Water Inlet
Part Number: 16321-31030
Other Names: Inlet Pipe, Thermostat Housing, Inlet, Water More Names
Replaces: 16321-31011
Description: RX350. ES350. RX450h. Japan built. 3.5L. Without tow hitch. Without towing package. 2007-09. More Info
Notes: Order by description. More Notes
Fits:
  • Lexus:
    • ES350,
    • RX350,
    • RX450h
$41.12
$32.14
$41.12
$32.14
In-Car Sensor
Part Number: 88620-74010
Other Names: Thermistor, Thermostatic Switch, Thermistor Assembly, Air More Names
Description: LS500. Without hybrid. More Info
Notes: Included with AC & heater assembly. More Notes
Fits:
  • Lexus:
    • LS500
$16.13
$12.61
$16.13
$12.61

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