/live/media/TZ/TZ_7511185_Fro.jpg)
OE Quality
60-Day Returns
Motorad
Fail-SafeMotorad 7511-185 Engine Coolant Thermostat
| Brand | Motorad 7511-185 |
|---|---|
| Sealing Flange Outside Diameter | 1.72 |
| Gasket Or Seal Included | Yes |
| Jiggle Pin Weep Hole | Yes |
| Bypass Diameter | 1.09 in |
| Bypass Length | 1.89 in |
| Flange Thickness | 0.05 in |
| Gasket/Seal Material | Rubber |
| Gasket/Seal Material | Rubber |
| Installation Tool Included | No |
| Number Of Seals | 1 |
| Temperature | 185 deg. f |
| Temperature (Degree) | 185 |
| Product line | Fail-Safe |
| Fits | Buick, Chevrolet, Pontiac, and Saturn · 49 vehicles |
OE supplier quality. Built with OEM materials and manufacturing processes.
Rapid response. Copper case and wax compound react quickly to coolant temperature changes.
Seal included. Rubber gasket or seal is included for a cleaner installation.
Cross-references Four Seasons 75111, Motorad 7511-185 and 97511185 for the same application. See all 6.
$25.41Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Engine Coolant Thermostat options
Motorad Fail-Safe Thermostat 7511-185
The Motorad Fail-Safe Engine Coolant Thermostat is built for OE-specified cooling performance and direct replacement service. This 185 degree thermostat is designed for vehicles that need stable coolant control, including Buick Lucerne, Chevrolet Impala, Chevrolet Malibu, Pontiac G6, and Saturn Vue applications.
Key Features
- Fail-Safe design locks open if overheating occurs, allowing coolant flow to continue
- 185 degree Fahrenheit opening temperature for OE-style thermal control
- Copper case and wax compound for fast response to coolant temperature changes
- Offset design with air relief valve and OEM-style seals where applicable
- Rubber gasket/seal included for installation
- Jiggle pin weep hole included to help with air bleeding during service
- Sealing flange outside diameter: 1.72 in; bypass diameter: 1.09 in; bypass length: 1.89 in
Product Details
Motorad Fail-Safe part number 7511-185 is manufactured to OEM specifications using OE supplier processes and materials. The Fail-Safe product line is engineered for cooling systems that demand consistent thermostat operation and a built-in open-position response in the event of overheating. This thermostat cross-references Four Seasons 75111 for the same application.
What It Helps Address
- Engine overheating caused by a thermostat that no longer regulates properly
- Coolant flow issues from a thermostat stuck closed
- Delayed warm-up or unstable operating temperature
- Air trapped in the cooling system after thermostat service
- Replacement needs for OE-specified 185F thermostat applications
Installation Notes
Install with the included rubber seal and verify the sealing flange and bypass dimensions match the original housing setup. The jiggle pin weep hole and air relief valve help purge trapped air during refill and bleeding. Confirm the vehicle uses the correct 185 degree thermostat specification before installation. Fits 2009-2011 Buick Lucerne, N/A; Fits 2006-2011 Chevrolet Impala, N/A; Fits 2006-2010 Chevrolet Malibu, N/A; Fits 2006-2010 Pontiac G6, N/A; Fits 2008-2010 Saturn Vue, N/A; Fits 2006-2009 Chevrolet Uplander, N/A; Fits 2006-2009 Pontiac Montana, N/A; Fits 2007-2008 Saturn Aura, N/A; Fits 2006-2007 Buick Terraza, N/A; Fits 2006-2007 Chevrolet Monte Carlo, N/A; Fits 2006-2007 Saturn Relay, N/A.
Quality Assurance
Manufactured with OEM quality materials and safety standards by an OE supplier, this thermostat is built to meet OEM specifications and processes for dependable cooling-system service.
This part fits 49 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Buick | Lucerne | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2011 | Chevrolet | Impala | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2011 | Chevrolet | Impala | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2010 | Buick | Lucerne | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2010 | Chevrolet | Impala | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2010 | Chevrolet | Impala | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2010 | Chevrolet | Malibu | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2010 | Pontiac | G6 | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2010 | Saturn | Vue | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Buick | Lucerne | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Chevrolet | Impala | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Chevrolet | Impala | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Chevrolet | Malibu | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Chevrolet | Uplander | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Pontiac | G6 | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Pontiac | G6 | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Pontiac | Montana | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Saturn | Vue | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Chevrolet | Impala | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Chevrolet | Impala | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Chevrolet | Malibu | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Chevrolet | Uplander | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Pontiac | G6 | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Pontiac | G6 | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Pontiac | Montana | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Saturn | Aura | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Saturn | Vue | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Buick | Terraza | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Chevrolet | Impala | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Chevrolet | Impala | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Chevrolet | Malibu | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Chevrolet | Malibu | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Chevrolet | Monte Carlo | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Chevrolet | Uplander | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Pontiac | G6 | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Pontiac | G6 | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Pontiac | Montana | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Saturn | Aura | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Saturn | Relay | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Buick | Terraza | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Chevrolet | Impala | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Chevrolet | Impala | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Chevrolet | Malibu | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Chevrolet | Monte Carlo | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Chevrolet | Monte Carlo | 3.5L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Chevrolet | Uplander | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Pontiac | G6 | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Pontiac | Montana | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Saturn | Relay | 3.9L | V6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe |
| No rows match your filter. | ||||||
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 75111Motorad — 7511-18597511185NIP7511-185SS185-1157