How to replace a thermostat in a cooling system?

To remove the thermostat, disconnect the cable from the negative terminal and drain the cooling system. Loosen the hose clamp and remove the hose from the thermostat housing, or the thermostat housing cover with the radiator hose attached if the clamp cannot be accessed and remove the thermostat cover mounting bolts and detach the housing cover.

Genuine Cadillac Deville Thermostat

Engine Coolant Thermostat

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12 Thermostats found

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Cadillac Deville Housing, Thermostat
Part Number: 1647540
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing, Water Outlet
$11.14 MSRP: $21.01
You Save: $9.87 (47%)

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Fits the following Vehicles:
1994-2005 Cadillac Deville | 4 DOOR, DEVILLE, FUNERAL COACH, HIGH LUXURY, LIMOUSINE, SEVILLE, SLS, STS, TOURING 4 DOOR, TOURING SEDAN | 8 Cyl 4.6L
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Cadillac Deville Thermostat,Engine Coolant
Part Number: 12559807
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Replaces: 3531407, 12555811, 12554784
$35.87 MSRP: $85.42
You Save: $49.55 (59%)

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Fits the following Vehicles:
1994-2005 Cadillac Deville | 4 DOOR, DEVILLE, FUNERAL COACH, HIGH LUXURY, LIMOUSINE, SEVILLE, SLS, STS, TOURING 4 DOOR, TOURING SEDAN | 8 Cyl 4.6L
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Cadillac Deville Thermostat,Engine Coolant
Part Number: 3539588
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
$9.25 MSRP: $17.46
You Save: $8.21 (48%)

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Fits the following Vehicles:
1985-1995 Cadillac Deville | 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 Deville Thermostat,Engine Coolant
Part Number: 12514334
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
$12.58 MSRP: $22.56
You Save: $9.98 (45%)

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Fits the following Vehicles:
1982 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR | 6 Cyl 4.1L
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Cadillac Deville Thermostat,Engine Coolant
Part Number: 10207373
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
$10.70 MSRP: $19.20
You Save: $8.50 (45%)

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Fits the following Vehicles:
1982-1984 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, FORMAL LIMOUSINE, LIMOUSINE | 8 Cyl 5.7L Diesel
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Cadillac Deville Thermostat
Part Number: 1618063
- Other Name: THERMOSTAT, Engine Coolant Temperature
$13.05 MSRP: $14.62
You Save: $1.57 (11%)

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More Info
Fits the following Vehicles:
1984 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, FORMAL LIMOUSINE, LIMOUSINE
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Cadillac Deville Thermostat Assembly, Engine Coolant
Part Number: 1623547
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
More Info
Fits the following Vehicles:
1982-1984 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, FORMAL LIMOUSINE, LIMOUSINE | 6 Cyl 4.1L, 8 Cyl 4.1L, 8 Cyl 5.7L Diesel
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Cadillac Deville Housing
Part Number: 1646974
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing, Thermostat Outlet Housing
More Info
Fits the following Vehicles:
1990-1995 Cadillac Deville | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, CONVERSION, TOURING 4 DOOR | 8 Cyl 4.5L, 8 Cyl 4.9L
Less Info
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Cadillac Deville Housing
Part Number: 1625774
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing
More Info
Fits the following Vehicles:
1985-1989 Cadillac Deville | 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
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Cadillac Deville Thermostat Assembly, Engine Coolant
Part Number: 10207381
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Replaces: 3054228, 03054228
$22.58 MSRP: $40.52
You Save: $17.94 (45%)
More Info
Fits the following Vehicles:
1985 Cadillac Deville | 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
Less Info
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Cadillac Deville Housing
Part Number: 3520936
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing, Thermostat Outlet Housing
More Info
Fits the following Vehicles:
1990-1995 Cadillac Deville | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, CONVERSION, TOURING 4 DOOR | 8 Cyl 4.5L, 8 Cyl 4.9L
Less Info
View related parts
Cadillac Deville Housing
Part Number: 1621087
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing
More Info
Fits the following Vehicles:
1985-1989 Cadillac Deville | 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
Less Info

Cadillac Deville Thermostat Parts Questions & Answers

Thermostat,Engine Coolant
12559807
Q: How to replace a thermostat in a cooling system?
A: To remove the thermostat, disconnect the cable from the negative terminal and drain the cooling system. Loosen the hose clamp and remove the hose from the thermostat housing, or the thermostat housing cover with the radiator hose attached if the clamp cannot be accessed and remove the thermostat cover mounting bolts and detach the housing cover.