How to remove the thermostat on 2008 Toyota Sienna?

Before accessing the thermostat you need to uninstall the V-bank cover sub-assembly and the No. 1 engine under cover. The first step requires draining coolant and removing the front wheel on the right-hand side as well as the front fender apron seal on the right-hand side. The V-ribbed belt requires removal as a next step. Start by disconnected the No. 2 radiator hose from the engine unit before eliminating the No. 2 idler pulley sub-assembly by disassembling bolt and idler pulley cover plate and idler pulley sub-assembly. Proceed by removing the water inlet after unfastening the 2 nuts followed by the thermostat while also removing its gasket from the component.

OEM 2008 Toyota Sienna Thermostat

Engine Coolant Thermostat

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2008 Toyota Sienna Thermostat
Part Number: 90916-A3002
$24.25 MSRP: $33.74
You Save: $9.49 (29%)
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Product Specifications
- Other Name: Engine Coolant Thermostat; Thermostat, Coolant
- Replaces: 90916-A3001, 90916-03140, 90916-03133
- Part Name Code: 16331A
- Item Weight: 1.40 Pounds
- Item Dimensions: 3.5 x 2.9 x 2.6 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 90916-A3002
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
More Info
Fits the following 2008 Toyota Sienna Submodels:
- Base, CE, L, LE, Limited, SE, XLE | 6 Cyl 3.5 L GAS

2008 Toyota Sienna Thermostat

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2008 Toyota Sienna Parts Questions & Experts Answers

Q: How to remove the thermostat on 2008 Toyota Sienna?
A: Before accessing the thermostat you need to uninstall the V-bank cover sub-assembly and the No. 1 engine under cover. The first step requires draining coolant and removing the front wheel on the right-hand side as well as the front fender apron seal on the right-hand side. The V-ribbed belt requires removal as a next step. Start by disconnected the No. 2 radiator hose from the engine unit before eliminating the No. 2 idler pulley sub-assembly by disassembling bolt and idler pulley cover plate and idler pulley sub-assembly. Proceed by removing the water inlet after unfastening the 2 nuts followed by the thermostat while also removing its gasket from the component.

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Alternate Year Models

2007 Toyota Sienna Thermostat 2009 Toyota Sienna Thermostat