How to replace a thermostat in a cooling system for Chevrolet Cobalt,HHR,Saturn ION and Pontiac G5?

Before faulting the thermostat, check the coolant level, drive belt tension, and temperature gauge. To replace the thermostat, disconnect the battery's negative terminal and drain the coolant. Detach the hoses from the thermostat housing cover. Remove the thermostat and install a new gasket.

Genuine Chevrolet Cobalt Thermostat

Engine Coolant Thermostat

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6 Thermostats found

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Chevrolet Cobalt Thermostat Assembly, Engine Coolant
Part Number: 12622410
$77.07 MSRP: $156.38
You Save: $79.31 (51%)
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Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Replaces: 21018811, 90537453, 55350941, 12615097
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Chevrolet Cobalt | 2 DOOR, 4 DOOR, LEVEL 4 PERFORMANCE (SS) 2 DOOR, LEVEL 4 PERFORMANCE/SC (SS) 2 DOOR, LEVEL 4 PERFORMANCE/SC (SS) 4 DOOR, LEVEL ONE (LS) 2 DOOR, LEVEL ONE (LS) 4 DOOR, LEVEL THREE (SS) 2 DOOR, LEVEL THREE (SS) 4 DOOR, LEVEL TWO (LT) 2 DOOR, LEVEL TWO (LT) 4 DOOR | 4 Cyl 2.0L, 4 Cyl 2.2L, 4 Cyl 2.4L
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Chevrolet Cobalt Housing Assembly, Engine Coolant Thermostat
Part Number: 12597172
$91.52 MSRP: $192.27
You Save: $100.75 (53%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing, Water Manifold
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2010 Chevrolet Cobalt | 2 DOOR, 4 DOOR, LEVEL 4 PERFORMANCE/SC (SS) 2 DOOR, LEVEL 4 PERFORMANCE/SC (SS) 4 DOOR, LEVEL ONE (LS) 2 DOOR, LEVEL ONE (LS) 4 DOOR, LEVEL THREE (SS) 2 DOOR, LEVEL THREE (SS) 4 DOOR, LEVEL TWO (LT) 2 DOOR, LEVEL TWO (LT) 4 DOOR | 4 Cyl 2.2L, 4 Cyl 2.4L
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Chevrolet Cobalt Housing Assembly, Engine Coolant Thermostat
Part Number: 12605853
$93.08 MSRP: $195.56
You Save: $102.48 (53%)
ADD TO CART
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2010 Chevrolet Cobalt | LEVEL 4 PERFORMANCE/SC (SS) 2 DOOR, LEVEL 4 PERFORMANCE/SC (SS) 4 DOOR | 4 Cyl 2.0L
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Chevrolet Cobalt Housing Asm,Engine Coolant Thermostat
Part Number: 12583152
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Chevrolet Cobalt | LEVEL 4 PERFORMANCE (SS) 2 DOOR, LEVEL 4 PERFORMANCE/SC (SS) 2 DOOR | 4 Cyl 2.0L
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Chevrolet Cobalt Housing Assembly, Engine Coolant Thermostat
Part Number: 12584898
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing
- Replaces: 13104425
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Chevrolet Cobalt | 2 DOOR, 4 DOOR, LEVEL 4 PERFORMANCE (SS) 2 DOOR, LEVEL ONE (LS) 2 DOOR, LEVEL ONE (LS) 4 DOOR, LEVEL TWO (LT) 2 DOOR, LEVEL TWO (LT) 4 DOOR | 4 Cyl 2.2L
View related parts
Chevrolet Cobalt Housing Assembly, Engine Coolant Thermostat
Part Number: 12590275
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008 Chevrolet Cobalt | LEVEL 4 PERFORMANCE/SC (SS) 2 DOOR | 4 Cyl 2.0L

Chevrolet Cobalt Thermostat Parts Questions & Experts Answers

Housing Assembly, Engine Coolant Thermostat
12597172
Q: How to replace a thermostat in a cooling system for Chevrolet Cobalt,HHR,Saturn ION and Pontiac G5?
A: Before faulting the thermostat, check the coolant level, drive belt tension, and temperature gauge. To replace the thermostat, disconnect the battery's negative terminal and drain the coolant. Detach the hoses from the thermostat housing cover. Remove the thermostat and install a new gasket.