What Should You Do Before Concluding That the Thermostat Is Responsible for a Cooling System Issue on Infiniti G35?

To replace the thermostat, remove the engine cover, air filter housing, and coolant reservoir. Next, remove the intake valve timing control cover, detach the hose from the thermostat housing, and clean all surface areas. After removing the components, place a new gasket, and refill the cooling system. After completing the replacement steps your vehicle should run properly.

Genuine Infiniti G35 Thermostat

Engine Coolant Thermostat

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5 Thermostats found

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Infiniti G35 Thermostat Assembly
Part Number: 21200-31U03
$28.74 MSRP: $42.40
You Save: $13.66 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat Assy; Thermostat, Thermostat Unit
- Manufacturer Note: OPEN TEMP=82 +-1.5
- Replaces: 21200-31U01, 21200-31U02, 21200-31U00
- Warranty: This genuine part is guaranteed by Infiniti's factory warranty.
Fits the following Vehicles:
- 2008 Infiniti G35 | Journey, Leather, Premium, Sport, Sport Premium | 6 Cyl 3.7L | VQ37VHR
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Infiniti G35 Thermostat Assembly
Part Number: 21200-JK20A
$26.88 MSRP: $39.65
You Save: $12.77 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat Assy; Thermostat
- Warranty: This genuine part is guaranteed by Infiniti's factory warranty.
Fits the following Vehicles:
- 2007-2008 Infiniti G35 | Journey, Leather, Premium, Sport, Sport Premium | 6 Cyl 3.5L | VQ35HR
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Infiniti G35 Thermostat Assembly
Part Number: 21200-4W010
$27.81 MSRP: $42.57
You Save: $14.76 (35%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Thermostat Assy
- Replaced by: 21200-4W01B
- Warranty: This genuine part is guaranteed by Infiniti's factory warranty.
Fits the following Vehicles:
- 2003-2007 Infiniti G35 | Basic, Sport, Track | 6 Cyl 3.5L | VQ35DE
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Infiniti G35 Thermostat Assembly
Part Number: 21200-4W01B
$28.86 MSRP: $42.57
You Save: $13.71 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat Assy; Thermostat
- Replaces: 21200-4W010
- Warranty: This genuine part is guaranteed by Infiniti's factory warranty.
Fits the following Vehicles:
- 2003-2007 Infiniti G35 | Basic, Sport, Track | 6 Cyl 3.5L | VQ35DE
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Infiniti G35 Thermostat Assembly
Part Number: 21200-31U13
$28.59 MSRP: $43.75
You Save: $15.16 (35%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Thermostat Assy
- Replaced by: 21200-31U1B
- Warranty: This genuine part is guaranteed by Infiniti's factory warranty.
Fits the following Vehicles:
- 2003-2007 Infiniti G35 | Basic, Sport, Track | 6 Cyl 3.5L | VQ35DE

Infiniti G35 Thermostat

It, Thermats, is a device found in most Infiniti G35 vehicles in charge of maintaining the appropriate temperature that the engine should reach in order to operate effectively and avoid some risks. The Thermostat is installed close to the radiator and it has features of a closed-loop control as it regulates the engine to operate within the appropriate temperatures. Telling heating or cooling devices to turn on or off and managing heat transfer fluids, the Thermostat thereby avoids poor engine performance together with possible damages that could be due to temperature range. Types of Thermostats used in automotive systems include: Mechanical Thermostat such as Bimetallic strips The wax pellet types of Thermostat which works by the expansion of contraction in the presence of heat. These devices are important to climate control of vehicles such as the Infiniti G35; providing comfort and improving usage.

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Infiniti G35 Thermostat Parts Questions & Experts Answers

Thermostat Assembly
21200-31U03
Q: What Should You Do Before Concluding That the Thermostat Is Responsible for a Cooling System Issue on Infiniti G35?
A: To replace the thermostat, remove the engine cover, air filter housing, and Coolant Reservoir. Next, remove the intake valve timing control cover, detach the hose from the thermostat housing, and clean all surface areas. After removing the components, place a new gasket, and refill the cooling system. After completing the replacement steps your vehicle should run properly.