How to replace the thermostat on Chevrolet Impala?

To replace the Thermostat, you should first adjust the hose clamp with the hose clamp pliers (J 38185) at the Thermostat Housing after removing the throttle body air inlet duct carefully from the Thermostat Housing after which it was positioned. Drain out ice-coolant partially from the cooling system and disconnect the hose to the Thermostat Housing and take away the exhaust crossover-pipe. Next, you need to pull the Thermostat Housing bolts, Thermostat housing and gasket, then the Thermostat will be removed. The mating surfaces should be cleaned before installing the new Thermostat, then Thermostat Housing, and gasket. Replace and tighten the Thermostat Housing bolts to 25 nm (18 ft. Lbs.) and put back the exhaust crossover pipe and attach the Radiator Hose to the Thermostat Housing. Again, use the hose clamp pliers (j 38185) to reposition and install the hose clamp to the Thermostat Housing and carefully reinstall the throttle body air inlet duct, fill the cooling system, and finally, inspect for leaks.

OEM Chevrolet Impala Thermostat

Engine Coolant Thermostat

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11 Thermostats found

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Chevrolet Impala Thermostat Unit Part Number: 24505924
$24.47 MSRP: $48.56
You Save: $24.09 (50%)
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant (W/Gasket); Thermostat; Thermostat, Engine Coolant Temperature
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2005 Chevrolet Impala | Base, LS, LS Sport, Police, SS | 6 Cyl 3.8 L GAS
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Chevrolet Impala Thermostat Part Number: 24507563
$20.53 MSRP: $40.74
You Save: $20.21 (50%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Replaced by: 19435095
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2005 Chevrolet Impala | Base | 6 Cyl 3.4 L GAS
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Chevrolet Impala Thermostat Part Number: 12591881
$45.62 MSRP: $85.67
You Save: $40.05 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant; Thermostat, Engine Coolant Temperature
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2011 Chevrolet Impala | 50th Anniversary Edition, LS, LT, LTZ, Police | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS
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Chevrolet Impala Thermostat Part Number: 12555290
$37.82 MSRP: $75.06
You Save: $37.24 (50%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Replaces: 10128336, 10223370
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1996 Chevrolet Impala | SS | 8 Cyl 5.7 L GAS
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Chevrolet Impala Thermostat Housing Part Number: 12681132
$79.06 MSRP: $162.47
You Save: $83.41 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 12638836, 12603830
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2020 Chevrolet Impala | LS, LT, LTZ, Premier | 6 Cyl 3.6 L BI-FUEL, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Chevrolet Impala Thermostat Unit Part Number: 12600171
$24.02 MSRP: $45.12
You Save: $21.10 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature; Thermostat
- Replaces: 12581595
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Chevrolet Impala | SS | 8 Cyl 5.3 L GAS
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Chevrolet Impala Thermostat Housing, Green Line Part Number: 12597172
$93.11 MSRP: $191.35
You Save: $98.24 (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:
- 2014 Chevrolet Impala | Eco | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Chevrolet Impala Thermostat, Green Line Part Number: 12622410
$69.04 MSRP: $153.83
You Save: $84.79 (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:
- 2014 Chevrolet Impala | Eco | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Chevrolet Impala Thermostat Housing Part Number: 25201447
$61.03 MSRP: $125.38
You Save: $64.35 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Thermostat Gasket; Thermostat; Thermostat Cover; Water Inlet; Housing, Engine Coolant Thermostat
- Replaces: 12651603
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2019 Chevrolet Impala | LS, LT, LTZ | 4 Cyl 2.5 L FLEX, 4 Cyl 2.5 L GAS
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Chevrolet Impala Thermostat Housing Part Number: 12689037
$94.12 MSRP: $193.41
You Save: $99.29 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 12632932, 12651114
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2013 Chevrolet Impala | LS, LT, LTZ, Police | 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Chevrolet Impala Thermostat Part Number: 3041390
Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1985 Chevrolet Impala | Base | 6 Cyl 3.8 L GAS, 6 Cyl 4.3 L GAS

Chevrolet Impala Thermostat

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Chevrolet Impala cars come with thermostat that is used to regulate the temperature of the engine and this piece of equipment is very important as it determines the performance of the vehicle. The thermostat is fixed at the point nearest the radiator it controls the temperatures of the engine by opening and closing the path for the coolant as required. It is an essential closed-loop control device that helps avoid overheating of the engine and consequent harm to it. Chevrolet has used various types of thermostats in Impala from traditional mechanical thermostats such as bimetallic strips and wax pellet type. Some of these gadgets work by either expanding or contracting in the presence of heat thus regulating heat of the engine. Replacing a faulty thermostat is crucial so as to prevent damages to the Chevrole Impala's engine and to guarantee that it remains in good shape and would not require frequent repair.

Chevrolet Impala Thermostat Parts and Q&A

Thermostat
24507563
Q: How to replace the thermostat on Chevrolet Impala?
A:
To replace the Thermostat, you should first adjust the hose clamp with the hose clamp pliers (J 38185) at the Thermostat Housing after removing the throttle body air inlet duct carefully from the Thermostat Housing after which it was positioned. Drain out ice-coolant partially from the cooling system and disconnect the hose to the Thermostat Housing and take away the exhaust crossover-pipe. Next, you need to pull the Thermostat Housing bolts, Thermostat housing and gasket, then the Thermostat will be removed. The mating surfaces should be cleaned before installing the new Thermostat, then Thermostat Housing, and gasket. Replace and tighten the Thermostat Housing bolts to 25 nm (18 ft. Lbs.) and put back the exhaust crossover pipe and attach the Radiator Hose to the Thermostat Housing. Again, use the hose clamp pliers (j 38185) to reposition and install the hose clamp to the Thermostat Housing and carefully reinstall the throttle body air inlet duct, fill the cooling system, and finally, inspect for leaks.