How to replace the thermostat in a cooling system on Chevrolet Cobalt?

The first step towards changing the Thermostat is draining the cooling system. Then, take out the bolts holding the Thermostat Housing in place to the Water Pump feed pipe, then remove the feed pipe. Carefully but record due to a subsequent reinstallation, care for removed Thermostat and retaining sleeve's orientation. During installation, install and secure the Thermostat and retaining sleeve with dimple in the housing slot. Before fitting in Water Pump, the o-ring should be lubricated with soapy water or coolants. Replace the feed pipe joining Thermostat Housing to Water Pump, and adhere to the fastener notice in service precautions. Screw the bolt to secure the Water Pump feed pipe doing a 10 nm (18 inch lbs), and finally topping up the cooling system.

OEM Chevrolet Cobalt Thermostat

Engine Coolant Thermostat

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6 Thermostats found

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Chevrolet Cobalt Thermostat Housing, Green Line
Part Number: 12597172
$96.09 MSRP: $197.47
You Save: $101.38 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Engine Coolant Thermostat Housing; Thermostat Housing Cover; Water Manifold; Housing, Engine Coolant Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2010 Chevrolet Cobalt | Base, LS, LT, LTZ, Sport, SS | 4 Cyl 2.2 L GAS, 4 Cyl 2.4 L GAS
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Chevrolet Cobalt Thermostat, Green Line
Part Number: 12622410
$67.69 MSRP: $150.82
You Save: $83.13 (56%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant; Thermostat Kit, Engine Coolant Temperature; Thermostat, Engine Coolant Temperature
- Replaces: 21018811, 55350941, 90537453, 12615097
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Chevrolet Cobalt | Base, LS, LT, LTZ, Sport, SS | 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L GAS, 4 Cyl 2.4 L GAS
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Chevrolet Cobalt Thermostat Housing
Part Number: 12605853
$97.74 MSRP: $200.84
You Save: $103.10 (52%)
ADD TO CART
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2010 Chevrolet Cobalt | SS | 4 Cyl 2.0 L GAS
View related parts
Chevrolet Cobalt Thermostat Housing
Part Number: 12590275
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008 Chevrolet Cobalt | SS | 4 Cyl 2.0 L GAS
View related parts
Chevrolet Cobalt Thermostat Housing
Part Number: 12584898
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 13104425
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Chevrolet Cobalt | Base, LS, LT | 4 Cyl 2.2 L GAS
View related parts
Chevrolet Cobalt Thermostat Housing
Part Number: 12583152
Product Specifications
- Other Name: Housing, Engine Coolant Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Chevrolet Cobalt | SS | 4 Cyl 2.0 L GAS

Chevrolet Cobalt Thermostat

Our website offers an extensive catalog of genuine Chevrolet Cobalt Thermostat at unbeatable prices. Every OEM Chevrolet Cobalt Thermostat comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!

Chevrolet Cobalt Thermostat Parts Questions & Experts Answers

Thermostat, Green Line
12622410
Q: How to replace the thermostat in a cooling system on Chevrolet Cobalt?
A: The first step towards changing the Thermostat is draining the cooling system. Then, take out the bolts holding the Thermostat Housing in place to the Water Pump feed pipe, then remove the feed pipe. Carefully but record due to a subsequent reinstallation, care for removed Thermostat and retaining sleeve's orientation. During installation, install and secure the Thermostat and retaining sleeve with dimple in the housing slot. Before fitting in Water Pump, the o-ring should be lubricated with soapy water or coolants. Replace the feed pipe joining Thermostat Housing to Water Pump, and adhere to the fastener notice in service precautions. Screw the bolt to secure the Water Pump feed pipe doing a 10 nm (18 inch lbs), and finally topping up the cooling system.