How to service the thermostat on 2006 Toyota Sienna?

To maintain the thermostat, empty the coolant, and remove some parts such as the battery, air cleaner assembly, etc. Unscrew the radiator hose and take out the water inlet to get to the thermostat. Insert a new gasket, assemble and ensure that there are no leakages of coolant after the addition of coolant.

OEM 2006 Toyota Sienna Thermostat

Engine Coolant Thermostat

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2006 Toyota Sienna Water Inlet
Part Number: 90916-A3003
$22.69 MSRP: $31.59
You Save: $8.90 (29%)
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 2006 Toyota Sienna Submodels:
- Base, CE, LE, Limited, XLE, XLE Limited | 4 Cyl 2.7 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.3 L GAS

2006 Toyota Sienna Thermostat

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2006 Toyota Sienna Thermostat Parts Q&A

Q: How to service the thermostat on 2006 Toyota Sienna?
A: To maintain the thermostat, empty the coolant, and remove some parts such as the battery, air cleaner assembly, etc. Unscrew the radiator hose and take out the water inlet to get to the thermostat. Insert a new gasket, assemble and ensure that there are no leakages of coolant after the addition of coolant.