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MotoradPart #: 7226-180
Motorad 7226-180 Engine Coolant Thermostat
⚙️ 65 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦Fail-Safe
🚗Fitment: Cadillac, Commercial Chassis, DeVille, Eldorado, Fleetwood, and Seville
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Engine Coolant Thermostat options
Reliable Engine Coolant Thermostat for Cadillac Vehicles
The Motorad Fail-Safe 7226-180 engine coolant thermostat is designed to maintain optimal engine temperature for Cadillac models including Commercial Chassis, DeVille, Eldorado, Fleetwood, and Seville. Engineered to open at 180 degrees Fahrenheit, this thermostat ensures efficient coolant flow and engine performance.
- Sealing flange outside diameter: 2.12 inches
- Bypass diameter: 0.93 inches
- Bypass length: 1.08 inches
- Flange thickness: 0.06 inches
- Temperature rating: 180°F
- No jiggle pin weep hole included
- Gasket or seal not included
Detailed Features of the Motorad Fail-Safe 7226-180 Thermostat
This engine coolant thermostat from Motorad’s Fail-Safe line is built to precise specifications to fit select Cadillac models. The 2.12-inch sealing flange outside diameter ensures a secure fit within the thermostat housing, while the 0.06-inch flange thickness provides durability and proper sealing surface. The bypass diameter of 0.93 inches and bypass length of 1.08 inches allow controlled coolant circulation during engine warm-up, preventing overheating and promoting efficient temperature regulation. The thermostat is calibrated to open at 180 degrees Fahrenheit, which is critical for maintaining the engine’s optimal operating temperature.
About the Motorad Fail-Safe Product Line
The Fail-Safe line by Motorad focuses on delivering dependable engine cooling components designed to meet or exceed OEM specifications. This product line emphasizes durability and precise temperature control, helping to protect engines from overheating or inefficient cooling. The 7226-180 thermostat is part of this line, offering reliable performance for Cadillac vehicles requiring a 180°F thermostat.
Common Applications and Issues Addressed
- Maintains proper engine operating temperature in Cadillac Commercial Chassis, DeVille, Eldorado, Fleetwood, and Seville models
- Prevents engine overheating caused by thermostat failure
- Improves engine warm-up time by regulating coolant flow
- Helps avoid coolant bypass issues due to precise bypass diameter and length
- Supports consistent engine performance and fuel efficiency
Installation Notes and Tips
Ensure the thermostat housing is clean and free of old gasket material before installation. This Motorad Fail-Safe 7226-180 thermostat does not include a gasket or seal, so a compatible gasket must be sourced separately. Verify the thermostat orientation matches OEM specifications, and confirm the jiggle pin weep hole is not required for your application. Proper installation will help maintain coolant system integrity and engine temperature control.
Quality Assurance and Warranty
Motorad’s Fail-Safe thermostats are manufactured to meet strict quality standards for fit and function. While specific warranty details are not provided, Motorad products typically undergo rigorous testing to ensure reliability and durability in automotive cooling systems.
| Brand | Motorad |
| Part Number | 7226-180 |
| Position | Fail-Safe |
| Sealing Flange Outside Diameter | 2.12 |
| Gasket Or Seal Included | No |
| Jiggle Pin Weep Hole | No |
| Bypass Diameter | 0.93 in |
| Bypass Length | 1.08 in |
| Flange Thickness | 0.06 in |
| Installation Tool Included | No |
| Temperature | 180 deg. f |
| Temperature (Degree) | 180 |
This part fits 65 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1984 | Cadillac | Commercial Chassis | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1984 | Cadillac | Fleetwood | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1983 | Cadillac | Commercial Chassis | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1983 | Cadillac | Fleetwood | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1982 | Cadillac | Commercial Chassis | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1982 | Cadillac | Fleetwood | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1981 | Cadillac | Commercial Chassis | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1981 | Cadillac | DeVille | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1981 | Cadillac | Eldorado | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1981 | Cadillac | Fleetwood | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1981 | Cadillac | Seville | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1980 | Cadillac | Commercial Chassis | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1980 | Cadillac | DeVille | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1980 | Cadillac | Eldorado | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1980 | Cadillac | Fleetwood | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1980 | Cadillac | Seville | 6.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1980 | Cadillac | Seville | 5.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1979 | Cadillac | Commercial Chassis | 7.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1979 | Cadillac | DeVille | 7.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1979 | Cadillac | DeVille | 5.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1979 | Cadillac | Fleetwood | 7.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1978 | Cadillac | Commercial Chassis | 7.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1978 | Cadillac | DeVille | 7.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1978 | Cadillac | Eldorado | 7.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1978 | Cadillac | Fleetwood | 7.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1977 | Cadillac | Commercial Chassis | 7.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1977 | Cadillac | DeVille | 7.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1977 | Cadillac | Eldorado | 7.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1977 | Cadillac | Fleetwood | 7.0L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1976 | Cadillac | Commercial Chassis | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1976 | Cadillac | DeVille | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1976 | Cadillac | Eldorado | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1976 | Cadillac | Fleetwood | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1975 | Cadillac | Commercial Chassis | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1975 | Cadillac | DeVille | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1975 | Cadillac | Eldorado | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1975 | Cadillac | Fleetwood | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1974 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1974 | Cadillac | DeVille | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1974 | Cadillac | Eldorado | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1974 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1973 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1973 | Cadillac | DeVille | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1973 | Cadillac | Eldorado | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1973 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1972 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1972 | Cadillac | DeVille | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1972 | Cadillac | Eldorado | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1972 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1971 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1971 | Cadillac | DeVille | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1971 | Cadillac | Eldorado | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1971 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1970 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1970 | Cadillac | DeVille | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1970 | Cadillac | Eldorado | 8.2L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1970 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1969 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1969 | Cadillac | DeVille | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1969 | Cadillac | Eldorado | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1969 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1968 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1968 | Cadillac | DeVille | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1968 | Cadillac | Eldorado | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
| 1968 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Engine Coolant Thermostat with Fail-Safe design for overheating at 180F, locks open, with alternative option.; Fail-Safe |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
7226-1807261897226180NIP7226-180SS180-6227
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.