2003 Toyota 4Runner Engine Coolant Thermostat Parts

Choose your Submodel for your 2003 Toyota 4Runner


Showing 1 - 10 of 12 products
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Mishimoto
  • Nissan Patrol Y61 Racing Thermostat, 1997-2013
  • Racing Thermostat, fits Nissan Patrol Y61 1997-2013
  • Product Attributes:
    • SellingPoint04: Mishimoto Lifetime Warranty
    • SellingPoint05: N/a
    • SellingPoint06: N/a
    • SellingPoint07: N/a
    • SellingPoint01: Direct-fit For 1997-2013 Nissan Patrol Y61
    • SellingPoint02: Activates At Lower Temperature So Coolant Flows Through System Earlier
    • SellingPoint03: Allows For Cooler Engine Temperatures
    • TechSpec Chassis Codes: N/a
    • SellingPoint08: N/a
    • SellingPoint09: N/a
    • TechSpec OEM Activation Temperature (F): 180
    • SellingPoint10: N/a
    • TechSpec Note: N/a
    • Prop 65 (C, R or CR): Cr
    • SellingPoint15: N/a
    • Install Difficulty: 3
    • SellingPoint11: N/a
    • SellingPoint12: N/a
    • TechSpec Engine Codes: N/a
    • SellingPoint13: N/a
    • SellingPoint14: N/a
    • TechSpec Applications: Click Here To See Full Fitment List
    • TechSpec Includes: (1) Mishimoto Thermostat--mishimoto Lifetime Warranty
    • TechSpec Mishimoto Activation Temperature (F): 140
  • Features:
    • Direct-fit for 1997-2013 Nissan Patrol Y61
    • Activates at lower temperature so coolant flows through system earlier
    • Allows for cooler engine temperatures
    • Mishimoto Lifetime Warranty
  • The Mishimoto racing thermostat for the 1997-2013 Nissan Patrol Y61 will promote greater cooling efficiency throughout your engine. The Mishimoto racing thermostat will open up at a lower temperature than standard thermostats, allowing the coolant to flow through the engine sooner thus reducing and maintaining cooler engine temperatures. This Mishimoto racing thermostat will significantly reduce high engine coolant temperatures resulting from power adding modifications and hot climates.

Additional Fitment Information:
Vehicle Block CC Cylinder Head Type Region Fuel Type Engine Aspiration Engine Version Engine Designation Valves Sub Model Engine VIN CID
2003 - Toyota 4Runner V 3956 DOHC United States GAS 6 Cyl 4.0L Naturally Aspirated N/R 1GR-FE 24 SR5 - 241

Mishimoto
  • Nissan Patrol Y61 Racing Thermostat, 1997-2013
  • Racing Thermostat, fits Nissan Patrol Y61 1997-2013
  • Product Attributes:
    • SellingPoint04: Mishimoto Lifetime Warranty
    • SellingPoint15: N/a
    • SellingPoint05: N/a
    • SellingPoint06: N/a
    • SellingPoint07: N/a
    • Install Difficulty: 3
    • SellingPoint11: N/a
    • SellingPoint01: Direct-fit For 1997-2013 Nissan Patrol Y61
    • SellingPoint12: N/a
    • TechSpec Engine Codes: N/a
    • SellingPoint02: Activates At Lower Temperature So Coolant Flows Through System Earlier
    • SellingPoint13: N/a
    • SellingPoint03: Allows For Cooler Engine Temperatures
    • SellingPoint14: N/a
    • TechSpec Chassis Codes: N/a
    • SellingPoint08: N/a
    • SellingPoint09: N/a
    • TechSpec Applications: Click Here To See Full Fitment List
    • TechSpec Includes: (1) Mishimoto Thermostat--mishimoto Lifetime Warranty
    • TechSpec OEM Activation Temperature (F): 180
    • SellingPoint10: N/a
    • TechSpec Mishimoto Activation Temperature (F): 140
    • TechSpec Note: N/a
  • Features:
    • Direct-fit for 1997-2013 Nissan Patrol Y61
    • Activates at lower temperature so coolant flows through system earlier
    • Allows for cooler engine temperatures
    • Mishimoto Lifetime Warranty
  • The Mishimoto racing thermostat for the 1997-2013 Nissan Patrol Y61 will promote greater cooling efficiency throughout your engine. The Mishimoto racing thermostat will open up at a lower temperature than standard thermostats, allowing the coolant to flow through the engine sooner thus reducing and maintaining cooler engine temperatures. This Mishimoto racing thermostat will significantly reduce high engine coolant temperatures resulting from power adding modifications and hot climates.

Additional Fitment Information:
Vehicle Sub Model
2003 - Toyota 4Runner SR5

Motorad
  • Fail-Safe Thermostat-180 Degrees
  • "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating." Temperature 180F OEM Recommended Temp
  • Fail-Safe
  • Product Attributes:
    • Sealing Flange Outside Diameter: 2.51
    • Flange Thickness: 0.068 In
    • Bypass Diameter: 1.18 In
    • Bypass Length: 1.66 In
    • Temperature (Degree): 180
  • Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable

This Part Fits the Following OEM/Substitute Numbers:
1601-291006, 7302-180, 73028, 97302180, NI, P7302-180, SS180-2037

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - Toyota 4Runner V 4663 8 Cyl 4.7L 285

Motorad
  • Thermostat-180 Degrees
  • Temperature 180F OEM Recommended Temp
  • Standard
  • Product Attributes:
    • Sealing Flange Outside Diameter: 2.51
    • Flange Thickness: 0.05 In
    • Bypass Diameter: 1.18 In
    • Bypass Length: 1.66 In
    • Temperature (Degree): 180
  • Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable

This Part Fits the Following OEM/Substitute Numbers:
12T40D, 14128, 1601-290219, 165, 19300PR7A02, 19300PV1003, 19300PV1013, 19301PV1Y00, 19301R8AA00, 212001LA0A, 212001LA1A, 21200AD201, 302-180, 30280, 30720083, 307200832, 33878, 35128...VIEW MORE

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - Toyota 4Runner V 4663 8 Cyl 4.7L 285

Motorad
  • Thermostat-170 Degrees
  • Temperature 170F Alternate Temp
  • Standard
  • Product Attributes:
    • Sealing Flange Outside Diameter: 2.51
    • Flange Thickness: 0.05 In
    • Bypass Diameter: 1.18 In
    • Bypass Length: 1.66 In
    • Temperature (Degree): 170
  • Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable

This Part Fits the Following OEM/Substitute Numbers:
12581519, 12T40C, 1305A237, 14127, 14337, 1601-24032, 19301P13000, 19301P13305, 19301P13306, 19301P8CA10, 19301P8EA10, 19301PR7305, 19301PR7307, 302-170, 30270, 33877, 33877S, 33914...VIEW MORE

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - Toyota 4Runner V 4663 8 Cyl 4.7L 285

NTC - TAMA
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • (82°C/180°F)

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - Toyota 4Runner V 4663 8 Cyl 4.7L 285

NTC - TAMA
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - Toyota 4Runner V 3956 6 Cyl 4.0L 241

Kuzeh
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • (82°C/180°F)

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - Toyota 4Runner V 4663 8 Cyl 4.7L 285

Mishimoto
  • Toyota 4Runner 4.0L Low-Temp Racing Thermostat, 2003+
  • Low-Temp Racing Thermostat, fits Toyota 4Runner 4.0L 2003+
  • Product Attributes:
    • SellingPoint04: Ideal For Use In Hot Climates, On Modified Vehicles, Or In Extreme Towing/driving Conditions
    • SellingPoint05: Mishimoto Lifetime Warranty
    • SellingPoint06: N/a
    • SellingPoint07: N/a
    • SellingPoint01: Direct Fit For 2003+ Toyota 4runner 4.0l
    • SellingPoint02: Stock-style Housing Includes Pre-installed Low-temperature Thermostat For Easy Install
    • SellingPoint03: The Lower Activation Temperature Allows Coolant To Flow Through The Engine Earlier, Which Reduces And Maintains Lower Engine Temperatures. (71c/160f Compared To The Factory Thermostat At 82c/180f)
    • TechSpec Chassis Codes: N/a
    • SellingPoint08: N/a
    • SellingPoint09: N/a
    • TechSpec OEM Activation Temperature (F): 180
    • SellingPoint10: N/a
    • TechSpec Note: N/a
    • Prop 65 (C, R or CR): Cr
    • SellingPoint15: N/a
    • Install Difficulty: 2
    • SellingPoint11: N/a
    • SellingPoint12: N/a
    • TechSpec Engine Codes: 4.0l V6
    • SellingPoint13: N/a
    • SellingPoint14: N/a
    • TechSpec Applications:
      • 2003+ Toyota 4runner 4.0l V6 (1gr-fe)--2007-2014 Toyota Fj Cruiser 4.0l V6 (1gr-fe)--2005-2015 Toyota Tacoma 4.0l V6 (1gr-fe)--2005-2014 Toyota Tundra 4.0l V6 (1gr-fe)
      • 2003+ Toyota 4runner 4.0l V6 (1gr-fe)--2007-2023 Toyota Fj Cruiser 4.0l V6 (1gr-fe)--2005-2015 Toyota Tacoma 4.0l V6 (1gr-fe)--2005-2014 Toyota Tundra 4.0l V6 (1gr-fe)--2010 - 2023 Toyota Prado 4.0l V6 (1gr-fe)--2009 - 2023 Toyota Lc70 Series 4.0l V6 (1gr
    • TechSpec Includes: (1) Mishimoto Low-temp Thermostat--(1) Thermostat Housing W/ O-ring--mishimoto Lifetime Warranty
    • TechSpec Mishimoto Activation Temperature (F): 160
  • Features:
    • Direct fit for 2003+ Toyota 4Runner 4.0L
    • Stock-style housing includes pre-installed low-temperature thermostat for easy install
    • The lower activation temperature allows coolant to flow through the engine earlier, which yields and maintains lower engine temperatures (71?C/160?F compared to the factory thermostat at 82?C/180?F)
    • Ideal for use in hot climates, on modified vehicles, or in extreme towing/driving conditions
    • Mishimoto Lifetime Warranty
  • A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your 2003+ Toyota 4Runner 4.0L cooling system with a Mishimoto Low-Temperature Racing Thermostat and housing! This thermostat is designed as a direct-fit replacement for your aged stock unit. The Mishimoto thermostat has a lower activation temperature (71?C/160?F) compared to the factory thermostat (82?C/180?F). The lower activation temperature allows coolant to flow through the engine earlier, which reduces and maintains lower engine temperatures. This thermostat is ideal for use in warmer climates, on vehicles making more power than stock, or under extreme towing/driving conditions. The stock-style housing will provide a proper seal and installs easily. Like all our Toyota Performance parts, this thermostat and housing includes the Mishimoto Lifetime Warranty.

Additional Fitment Information:
Vehicle Region Sub Model
2003 - Toyota 4Runner United States SR5

Motorad
  • Fail-Safe Thermostat-170 Degrees
  • "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating." Temperature 170F Alternate Temp
  • Fail-Safe
  • Product Attributes:
    • Sealing Flange Outside Diameter: 2.51
    • Flange Thickness: 0.068 In
    • Bypass Diameter: 1.18 In
    • Bypass Length: 1.66 In
    • Temperature (Degree): 170
  • Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable

This Part Fits the Following OEM/Substitute Numbers:
1601-291436, 7302-170, 73027, 97302170, NI, P7302-170, SS170-2037

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - Toyota 4Runner V 4663 8 Cyl 4.7L 285
Showing 1 - 10 of 12 products

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