How to replace the thermostat on Buick Regal?

Begin your Thermostat replacement by taking out both the fuel injector sight shield along with draining the cooling system fluids. The next step requires removal of the air cleaner intake duct. The hose clamp pliers (J 38185) realigns the water outlet housing clamp before extracting the radiator inlet hose from that housing. Using a screwdriver remove the bolts securing the water outlet housing before removing the housing and gasket together. Remove the Thermostat while cleaning the mating surfaces of the water outlet gasket. Begin by installation of the Thermostat before adding the gasket and water outlet housing. Secure the water outlet housing components using a torque of 27 nm (20 ft. Lbs.). Secure the Radiator Hose to the water outlet housing by using hose clamp pliers (J 38185) to guide and install the hose clamp. After completing cooling system fluid addition you should install the air cleaner intake duct while checking for leaks during a final inspection.

OEM Buick Regal Thermostat

Engine Coolant Thermostat

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

9 Thermostats found

View related parts
Buick Regal Thermostat Unit Part Number: 24506986
$18.80 MSRP: $34.02
You Save: $15.22 (45%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature; Thermostat
- Replaces: 03037747, 10207375, 3037747, 24500253
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997 Buick Regal | GS, LS | 6 Cyl 3.8 L GAS
- 1990-1991 Buick Regal | Custom, Gran Sport, Limited | 6 Cyl 3.8 L GAS
View related parts
Buick Regal Thermostat Unit Part Number: 24505924
$24.47 MSRP: $48.56
You Save: $24.09 (50%)
ADD TO CART
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:
- 1992-2004 Buick Regal | 25th Anniversary Edition, Custom, Gran Sport, GS, GSE, Limited, LS, LSE, Olympic Gold Edition | 6 Cyl 3.8 L GAS
View related parts
Buick Regal Thermostat Part Number: 24507563
$20.53 MSRP: $40.74
You Save: $20.21 (50%)
ADD TO CART
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:
- 1992-1996 Buick Regal | Custom, Limited | 6 Cyl 3.1 L GAS
View related parts
Buick Regal Thermostat Housing, Green Line Part Number: 12597172
$93.11 MSRP: $191.35
You Save: $98.24 (52%)
Ships in 1-2 Business Days
ADD TO CART
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:
- 2011-2017 Buick Regal | Base, CXL, Premium | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
View related parts
Buick Regal Thermostat, Green Line Part Number: 12622410
$69.04 MSRP: $153.83
You Save: $84.79 (56%)
Ships in 1-2 Business Days
ADD TO CART
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:
- 2011-2017 Buick Regal | Base, CXL, GS, Premium | 4 Cyl 2.0 L FLEX, 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
View related parts
Buick Regal Thermostat Part Number: 24500253
$18.80 MSRP: $34.02
You Save: $15.22 (45%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Replaced by: 24506986
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1991 Buick Regal | Custom, Gran Sport, Limited | 6 Cyl 3.8 L GAS
View related parts
Buick Regal Thermostat Housing Part Number: 12605853
$99.70 MSRP: $204.86
You Save: $105.16 (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:
- 2011-2013 Buick Regal | CXL, GS, Premium | 4 Cyl 2.0 L FLEX
View related parts
Buick Regal Thermostat Housing Part Number: 25201447
$61.03 MSRP: $125.38
You Save: $64.35 (52%)
Ships in 1-2 Business Days
ADD TO CART
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:
- 2014-2017 Buick Regal | Base, GS, Premium, Sport Touring | 4 Cyl 2.0 L GAS
View related parts
Buick Regal 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:
- 1984-1987 Buick Regal | Base, Limited | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L DIESEL

Buick Regal Thermostat

Want to cut long-term maintenance and repair costs? Choose OEM Thermostat. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine Buick Regal parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Buick Regal Thermostat includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

The Thermostat of the Buick Regal car helps control the temperature of the engine for the vehicle to perform as expected. Usually placed at the vicinity of the radiator, the thermostat features as closed loop controllers whose main job is to regulate the set temperature range. There has been the usage of various categories of thermostats in vehicles, some of which are the mechanical thermostat such as, bimetallic strips, wax pellets, and pneumatic thermostats that act through air filled control tubes. These operate through the use of switching of heating or cooling appliances or management of heat transfer fluids. In a Buick Regal vehicle, the thermostat play a significant role of regulating the temperature of the engine hence increasing efficiency and comfort in use.

Buick Regal Thermostat Parts and Q&A

Thermostat Unit
24505924
Q: How to replace the thermostat on Buick Regal?
A:
Begin your Thermostat replacement by taking out both the fuel injector sight shield along with draining the cooling system fluids. The next step requires removal of the air cleaner intake duct. The hose clamp pliers (J 38185) realigns the water outlet housing clamp before extracting the radiator inlet hose from that housing. Using a screwdriver remove the bolts securing the water outlet housing before removing the housing and gasket together. Remove the Thermostat while cleaning the mating surfaces of the water outlet gasket. Begin by installation of the Thermostat before adding the gasket and water outlet housing. Secure the water outlet housing components using a torque of 27 nm (20 ft. Lbs.). Secure the Radiator Hose to the water outlet housing by using hose clamp pliers (J 38185) to guide and install the hose clamp. After completing cooling system fluid addition you should install the air cleaner intake duct while checking for leaks during a final inspection.