Lexus IS300 Thermostat

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We stock Genuine OEM Lexus® Thermostat for your Lexus IS300. OEM thermostats are designed and manufactured to fit and function perfectly with your specific make and model of vehicle. They are designed to regulate the flow of coolant through your engine, ensuring that your engine operates at the correct temperature range. A malfunctioning thermostat can cause overheating, poor fuel efficiency, and potential engine damage, so replacing it with an OEM part can ensure optimal performance and reliability. Additionally, using an OEM thermostat can help ensure that the part is covered under the manufacturer's warranty. Manufacturer's Warranty Included. Guaranteed Fit. Experts standing by.

Thermostat Housing
Part Number: 16321-46040
Lexus Lexus
Other Names: Thermostat Cover, Inlet Water
Replaces: 16321-46030
Description: SC300, GS300. IS300. 3.0L.
Fits:
  • Lexus:
    • GS300,
    • IS300,
    • SC300
MSRP $50.20
$35.61
MSRP $50.20
$35.61
Thermostat Gasket
Part Number: 16325-62010
Lexus Lexus
Other Names: Thermostat Housing Gasket, Engine Coolant Thermostat Gasket, Thermostat Seal, Gasket, Water Inlet Seal, Water Inlet Gasket, Gasket...
Replaces: 16325-0H020
Fits:
  • Lexus:
    • ES250,
    • ES300,
    • ES330,
    • ES350,
    • GS300,
    • IS300,
    • LS400,
    • RX300,
    • RX330,
    • RX350,
    • RX400h,
    • RX450h,
    • SC300,
    • SC400
MSRP $8.56
$6.44
MSRP $8.56
$6.44
Thermostat
Part Number: 90916-03093
Lexus Lexus
Description: SC300, GS300. IS300. 3.0L.
Fits:
  • Lexus:
    • GS300,
    • IS300,
    • SC300
MSRP $30.74
$22.18
MSRP $30.74
$22.18
Thermostat
Part Number: 90916-03156
Lexus Lexus
Options: Left, Right
Notes: Part Of Water Inlet On 3.5L.
Fits:
  • Lexus:
    • GS200t,
    • GS300,
    • IS200t,
    • IS300,
    • NX200t,
    • NX300,
    • RC Turbo,
    • RC200t,
    • RC300
MSRP $69.88
$49.57
MSRP $69.88
$49.57
Thermostat
Part Number: 90916-03154
Lexus Lexus
Options: Right, Left
Notes: Part Of Water Inlet On 3.5L.
Fits:
  • Lexus:
    • GS Turbo,
    • GS200t,
    • GS300,
    • IS200t,
    • IS300,
    • NX200t,
    • NX300,
    • RC Turbo,
    • RC200t,
    • RC300
MSRP $39.57
$28.55
MSRP $39.57
$28.55
Gasket
Part Number: 16346-36011
Lexus Lexus
Options: Left, Right
Other Names: Water Inlet Gasket, Thermostat Gasket, Gasket Thermostat
Replaces: 16346-36010
Description: NX300. IS300. 2.0l. Left. NX200t. IS200t. Right. GS200t. For t-stat: wax 82-95. GS300. RC200t, RC Turbo, RC300.
Fits:
  • Lexus:
    • GS Turbo,
    • GS200t,
    • GS300,
    • IS200t,
    • IS300,
    • NX200t,
    • NX300,
    • RC Turbo,
    • RC200t,
    • RC300
MSRP $7.52
$5.65
MSRP $7.52
$5.65
Water Inlet
Part Number: 16031-31020
Lexus Lexus
Other Names: Thermostat Housing, Thermostat Unit, Engine Coolant Thermostat Kit, Inlet Sub Assembly Wate
Notes: Included with inlet assembly. Includes Thermostat And Gasket. Part has related component that cannot be reused/reinstalled. gasket.
Fits:
  • Lexus:
    • GS300,
    • GS350,
    • GS450h,
    • IS250,
    • IS300,
    • IS350,
    • RC300,
    • RC350
MSRP $79.13
$56.14
MSRP $79.13
$56.14
Water Inlet
Part Number: 16031-31071
Lexus Lexus
Other Names: Thermostat, Inlet Sub Assembly Wate
Replaces: 16031-31070
Description: Without 5.0l, 3.5l. 3.5L, with thermostat, without hybrid. GS350. IS300. 3.5l. IS350. RC300. RC350.
Notes: Includes Thermostat And Gasket. Part has related component that cannot be reused/reinstalled. gasket.
Fits:
  • Lexus:
    • GS350,
    • IS300,
    • IS350,
    • RC300,
    • RC350
MSRP $80.49
$57.10
MSRP $80.49
$57.10
Gasket
Part Number: 16325-36051
Lexus Lexus
Options: Inner, Right, Left
Other Names: Water Outlet Gasket, Thermostat Gasket, Engine Coolant Thermostat Gasket, Gasket Water Inlet
Description: Without 5.0l. 2.0L, #1. Inner Thermostat. IS300. 2.0l. Right. IS200t. Left. GS200t. For t-stat: wax 78-91. GS300.
Fits:
  • Lexus:
    • GS200t,
    • GS300,
    • IS200t,
    • IS300,
    • IS350,
    • NX200t,
    • NX300,
    • RC200t,
    • RC300
MSRP $9.15
$6.88
MSRP $9.15
$6.88
Water Outlet Gasket
Part Number: 16325-31010
Lexus Lexus
Other Names: Thermostat Housing Gasket, Engine Coolant Thermostat Housing Gasket, Housing Gasket, Gasket Water Inlet
Description: Is 250/350. Without 5.0l. 3.0, 3.5L. To 10/2017. To 11/2017. Japan Built. 2007-09.
Notes: Included with water outlet.
Fits:
  • Lexus:
    • ES350,
    • GS300,
    • GS350,
    • GS450h,
    • IS250,
    • IS300,
    • IS350,
    • RC300,
    • RC350,
    • RX350,
    • RX450h
MSRP $2.41
$1.81
MSRP $2.41
$1.81
Water Outlet
Part Number: 16304-31037
Lexus Lexus
Options: Lower
Other Names: Engine Coolant Thermostat Housing, Outlet Sub Assembly Wat
Replaces: 16304-31030, 16304-31031, 16304-31032, 16304-31033, 16304-31034, 16304-31035, 16304-31036
Notes: Includes Radiator Cap. Included with inlet assembly.
Fits:
  • Lexus:
    • GS300,
    • GS350,
    • GS450h,
    • IS250,
    • IS300,
    • IS350,
    • RC300,
    • RC350
MSRP $196.27
$138.06
MSRP $196.27
$138.06
Engine Coolant Water Inlet Gasket
Part Number: 16326-31050
Lexus Lexus
Other Names: Water Inlet O-Ring, Thermostat Gasket, Water Inlet Gasket, Gasket, Gasket Water Inlet
Replaces: 16326-31010, 16326-31020
Notes: Included with water inlet. Part cannot be reused/reinstalled.
Fits:
  • Lexus:
    • ES350,
    • GS350,
    • IS300,
    • IS350,
    • LC500h,
    • LS500h,
    • RC300,
    • RC350,
    • RX350,
    • RX350L,
    • RX450h,
    • RX450hL
MSRP $0.92
$0.69
MSRP $0.92
$0.69
Division Bar Bolt
Part Number: 90080-10164
Lexus Lexus
Options: Left, Right
Other Names: Thermostat Housing Bolt, Fog Lamp Assembly Bolt, Fog Lamp Assembly Screw, Fog Light Screw, Bolt Washer Based H
Replaces: 91511-60616, 91511-B0616
Description: 2001-03. wagon. 2004-05. wagon.
Fits:
  • Lexus:
    • ES350,
    • IS300,
    • RX300
MSRP $1.70
$1.28
MSRP $1.70
$1.28
Diagonal Brace Nut
Part Number: 90178-A0023
Lexus Lexus
Options: Left Outer, Right Outer, Front Outer, Rear Outer
Other Names: Engine Intake Manifold Nut, Hardware Kit, Height Sensor Nut, Sensor Nut, Antenna Assembly Nut, Window Regulator Nut, Fan Blade Nut,...
Replaces: 94151-80600
Notes: Included with cover and antenna.
Fits:
  • Lexus:
    • CT200h,
    • ES250,
    • ES300h,
    • ES350,
    • GS350,
    • IS250,
    • IS300,
    • IS350,
    • LC500,
    • LC500h,
    • LS500,
    • LS500h,
    • LS600h,
    • LX570,
    • LX600,
    • NX250,
    • NX350,
    • NX350h,
    • NX450h+,
    • RC300,
    • RC350,
    • RX350,
    • RX450h,
    • UX200,
    • UX250h
MSRP $1.41
$1.06
MSRP $1.41
$1.06

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