OE Quality
60-Day Returns

Motorad 7268-180 Engine Coolant Thermostat
Reliable Engine Coolant Thermostat for Infiniti, Mercury, and Nissan
The Motorad Fail-Safe 7268-180 engine coolant thermostat is designed to maintain optimal engine temperature for select Infiniti, Mercury, and Nissan vehicles. Engineered to open at 180 degrees Fahrenheit, this thermostat helps regulate coolant flow and supports efficient engine performance.
- Engine coolant thermostat with a 180°F opening temperature
- Sealing flange outside diameter: 2.52 inches
- Bypass diameter: 0.98 inches and bypass length: 1.88 inches
- Flange thickness of 0.068 inches for precise fitment
- Compatible with Infiniti 300ZX, Mercury Villager, Nissan Q45, QX4, and Xterra models
Product Line: Motorad Fail-Safe Thermostats
The Fail-Safe line by Motorad focuses on dependable engine cooling components designed to meet or exceed OEM specifications. This product line emphasizes consistent temperature regulation to protect engines from overheating or inefficient cooling, making it suitable for a range of passenger vehicles including those from Infiniti, Mercury, and Nissan.
Technical Details and Features
The Motorad Fail-Safe 7268-180 thermostat features a sealing flange outside diameter of 2.52 inches, ensuring a secure seal within the cooling system. The bypass diameter of 0.98 inches and bypass length of 1.88 inches allow controlled coolant flow during engine warm-up phases. With a flange thickness of 0.068 inches, this thermostat fits precisely in the housing to prevent leaks. It does not include a gasket or seal, nor does it have a jiggle pin weep hole, which is typical for this design. The thermostat opens at a temperature of 180 degrees Fahrenheit, suitable for maintaining proper engine operating temperature in the specified vehicle models.
Compatible Vehicles and Applications
- Infiniti 300ZX engine cooling system regulation
- Mercury Villager thermostat replacement
- Nissan Q45, QX4, and Xterra temperature control
- Helps prevent engine overheating and coolant flow issues
- Supports efficient engine warm-up and temperature stability
Installation Notes and Tips
When installing the Motorad Fail-Safe 7268-180 thermostat, ensure the sealing flange is properly seated to avoid coolant leaks. Since no gasket or seal is included, use the existing or a new compatible gasket as required by your vehicle’s service manual. Verify the bypass dimensions match the original part to maintain correct coolant flow. This thermostat does not include an installation tool, so use appropriate tools to avoid damage during installation.
Quality Assurance and Warranty
Motorad’s Fail-Safe thermostats are manufactured to meet industry standards for durability and performance. While specific warranty details are not provided here, Motorad products typically come with a limited warranty against defects in materials and workmanship. Refer to the product packaging or Motorad’s official documentation for exact warranty terms.
| Brand | Motorad |
| Part Number | 7268-180 |
| Position | Fail-Safe |
| Sealing Flange Outside Diameter | 2.52 |
| Gasket Or Seal Included | No |
| Jiggle Pin Weep Hole | No |
| Bypass Diameter | 0.98 in |
| Bypass Length | 1.88 in |
| Flange Thickness | 0.068 in |
| Installation Tool Included | No |
| Temperature | 180 deg. f |
| Temperature (Degree) | 180 |
This part fits 22 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | Nissan | Xterra | 3.3L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 2003 | Nissan | Xterra | 3.3L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 2002 | Mercury | Villager | 3.3L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 2002 | Nissan | Xterra | 3.3L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 2001 | INFINITI | Q45 | 4.1L | V8 | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 2001 | Mercury | Villager | 3.3L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 2000 | INFINITI | Q45 | 4.1L | V8 | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 2000 | INFINITI | QX4 | 3.3L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 2000 | Mercury | Villager | 3.3L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1999 | INFINITI | Q45 | 4.1L | V8 | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1999 | Mercury | Villager | 3.3L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1998 | INFINITI | Q45 | 4.1L | V8 | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1998 | Mercury | Villager | 3.0L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1997 | INFINITI | Q45 | 4.1L | V8 | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1997 | Mercury | Villager | 3.0L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1996 | Mercury | Villager | 3.0L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1995 | Mercury | Villager | 3.0L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1994 | Mercury | Villager | 3.0L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1993 | Mercury | Villager | 3.0L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1986 | Nissan | 300ZX | 3.0L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1985 | Nissan | 300ZX | 3.0L | 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 180F; Use Silicone Sealant; OE Specified Temperature; Fail-Safe |
| 1984 | Nissan | 300ZX | 3.0L | 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 180F; Use Silicone Sealant; OE Specified Temperature; 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.