How to remove and install the thermostat on Cadillac Fleetwood?

For 4.5L and 4.9L engines, drain coolant, and remove the upper air filter assembly. Next, unscrew the two bolts of the upper thermostat housing, then remove the thermostat. Install a new thermostat and O-ring, reattach the housing, and tighten the bolts. Refill the system, start the engine, and make sure there are no leaks.

Genuine Cadillac Fleetwood Thermostat

Engine Coolant Thermostat

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14 Thermostats found

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Cadillac Fleetwood Thermostat,Engine Coolant
Part Number: 3539588
$8.84 MSRP: $17.46
You Save: $8.62 (50%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1992 Cadillac Fleetwood | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, BROUGHAM 2 DOOR FWD, BROUGHAM 4 DOOR FWD, CONVERSION, FUNERAL COACH, LIMOUSINE 4 DOOR, LIMOUSINE 4 DOOR CTR PART, TOURING 4 DOOR | 8 Cyl 4.1L, 8 Cyl 4.5L, 8 Cyl 4.9L
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Cadillac Fleetwood Thermostat,Engine Coolant
Part Number: 12555290
$34.46 MSRP: $69.94
You Save: $35.48 (51%)
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Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Replaces: 10128336, 10223370
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1993-1996 Cadillac Fleetwood | BROUGHAM, BROUGHAM 4 DOOR | 8 Cyl 5.7L
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Cadillac Fleetwood Thermostat,Engine Coolant
Part Number: 12514334
$12.91 MSRP: $23.16
You Save: $10.25 (45%)
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Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982 Cadillac Fleetwood | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR | 6 Cyl 4.1L
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Cadillac Fleetwood Thermostat
Part Number: 1618063
$13.05 MSRP: $14.62
You Save: $1.57 (11%)
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Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1984 Cadillac Fleetwood | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, FORMAL LIMOUSINE, LIMOUSINE | 8 Cyl 6.0L
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Cadillac Fleetwood Thermostat,Engine Coolant
Part Number: 10207373
$10.99 MSRP: $19.72
You Save: $8.73 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1986 Cadillac Fleetwood | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 2 DOOR RWD, BROUGHAM 4 DOOR, BROUGHAM 4 DOOR RWD, FORMAL LIMOUSINE, LIMOUSINE | 8 Cyl 5.0L, 8 Cyl 5.7L Diesel
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Cadillac Fleetwood Thermostat Assembly, Engine Coolant
Part Number: 1623547
Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1985 Cadillac Fleetwood | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 2 DOOR RWD, BROUGHAM 4 DOOR, BROUGHAM 4 DOOR RWD, FORMAL LIMOUSINE, LIMOUSINE | 6 Cyl 4.1L, 8 Cyl 4.1L, 8 Cyl 5.7L Diesel, 8 Cyl 6.0L
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Cadillac Fleetwood Housing, Engine Coolant Thermostat Lower
Part Number: 1620610
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing
- Position: Lower
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1985 Cadillac Fleetwood | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 2 DOOR RWD, BROUGHAM 4 DOOR, BROUGHAM 4 DOOR RWD, FORMAL LIMOUSINE, LIMOUSINE | 6 Cyl 4.1L, 8 Cyl 4.1L, 8 Cyl 5.7L Diesel, 8 Cyl 6.0L
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Cadillac Fleetwood Housing
Part Number: 1646974
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing, Thermostat Outlet Housing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1992 Cadillac Fleetwood | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, CONVERSION, TOURING 4 DOOR | 8 Cyl 4.5L, 8 Cyl 4.9L
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Cadillac Fleetwood Thermostat Assembly, Engine Coolant
Part Number: 22538325
Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1986 Cadillac Fleetwood | BROUGHAM 2 DOOR RWD, BROUGHAM 4 DOOR RWD | 8 Cyl 4.1L, 8 Cyl 5.0L
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Cadillac Fleetwood Thermostat Assembly, Engine Coolant
Part Number: 10207381
$22.58 MSRP: $40.52
You Save: $17.94 (45%)
Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Replaces: 03054228, 3054228
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985 Cadillac Fleetwood | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR FWD, BROUGHAM 4 DOOR FWD, FUNERAL COACH, LIMOUSINE 4 DOOR, LIMOUSINE 4 DOOR CTR PART | 6 Cyl 4.3L Diesel
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Cadillac Fleetwood Housing
Part Number: 3520936
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing, Thermostat Outlet Housing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1992 Cadillac Fleetwood | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, CONVERSION, TOURING 4 DOOR | 8 Cyl 4.5L, 8 Cyl 4.9L
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Cadillac Fleetwood Housing, Engine Coolant Thermostat Upper
Part Number: 1609644
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing
- Position: Upper
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1985 Cadillac Fleetwood | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 2 DOOR RWD, BROUGHAM 4 DOOR, BROUGHAM 4 DOOR RWD, FORMAL LIMOUSINE, LIMOUSINE | 6 Cyl 4.1L, 8 Cyl 4.1L, 8 Cyl 5.7L Diesel, 8 Cyl 6.0L
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Cadillac Fleetwood Housing
Part Number: 1621087
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:
- 1985-1989 Cadillac Fleetwood | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, BROUGHAM 2 DOOR FWD, BROUGHAM 4 DOOR FWD, CONVERSION, FUNERAL COACH, LIMOUSINE 4 DOOR, LIMOUSINE 4 DOOR CTR PART | 8 Cyl 4.1L, 8 Cyl 4.5L
View related parts
Cadillac Fleetwood Housing
Part Number: 1625774
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:
- 1985-1989 Cadillac Fleetwood | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, BROUGHAM 2 DOOR FWD, BROUGHAM 4 DOOR FWD, CONVERSION, FUNERAL COACH, LIMOUSINE 4 DOOR, LIMOUSINE 4 DOOR CTR PART | 8 Cyl 4.1L, 8 Cyl 4.5L

Cadillac Fleetwood Thermostat

Engine Temperature Control in Cadillac Fleetwood involves the Thermostat which control the flow of coolant to maintain a desirable temperature of the engine. Located close to the radiator and regulates the circulation of the coolant to keep the engine at optimum temperature. Different models of Fleetwood have adopted different types of thermostats over the years, including mechanical thermostats such as the bimetallic strip and wax pellet types. These devices work with the use of an expansion bellows mechanism which either expands or contracts in accordance to changes in temperature keeping the engine heat under check. There are also pneumatic systems that involved the use of air pressure tubes to control the temperature hence improving on the operation of vehicles.

Each OEM Cadillac Fleetwood Thermostat we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Cadillac Fleetwood Thermostat Parts Questions & Experts Answers

Thermostat,Engine Coolant
12555290
Q: How to remove and install the thermostat on Cadillac Fleetwood?
A: For 4.5L and 4.9L engines, drain coolant, and remove the upper air filter assembly. Next, unscrew the two bolts of the upper thermostat housing, then remove the thermostat. Install a new thermostat and O-ring, reattach the housing, and tighten the bolts. Refill the system, start the engine, and make sure there are no leaks.