How to Service and Replace a Thermostat on 2002 Toyota Highlander?

The replacement of this thermostat begins with coolant drainage followed by removing the generator assembly along with the water inlet through a process of detaching 2 nuts and breaking it free from the cylinder block. Position the new thermostat along with its gasket inside the specified alignment while directing the jiggle valve upward at a 10-degree angle position. Reinstall the water inlet after replacing the 2 nuts followed by coolant addition then leak inspection of the system.

OEM 2002 Toyota Highlander Thermostat

Engine Coolant Thermostat

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2002 Toyota Highlander Water Inlet
Part Number: 90916-A3003
$22.69 MSRP: $31.59
You Save: $8.90 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat; Engine Coolant Thermostat; Thermostat, Coolant
- Replaces: 90916-03129, 90916-03084
- Part Name Code: 16331A
- Item Weight: 0.70 Pounds
- Item Dimensions: 2.3 x 0.9 x 2.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 90916-A3003
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
More Info
Fits the following 2002 Toyota Highlander Submodels:
- Base, Hybrid, Hybrid Limited, LE, Limited, Plus, SE, Sport | 4 Cyl 2.4 L GAS, 4 Cyl 2.7 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.3 L FULL HYBRID EV-GAS (FHEV), 6 Cyl 3.3 L GAS

2002 Toyota Highlander Thermostat

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2002 Toyota Highlander Thermostat Parts Questions & Experts Answers

Q: How to Service and Replace a Thermostat on 2002 Toyota Highlander?
A: The replacement of this thermostat begins with coolant drainage followed by removing the generator assembly along with the water inlet through a process of detaching 2 nuts and breaking it free from the cylinder block. Position the new thermostat along with its gasket inside the specified alignment while directing the jiggle valve upward at a 10-degree angle position. Reinstall the water inlet after replacing the 2 nuts followed by coolant addition then leak inspection of the system.