Fail-Safe Thermostats offer premium, patented technology for superior protection over any thermostat on the market. Only Fail-Safe is designed to lock in the open position when overheating occurs due to a failing cooling sys...

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Product Review

Fail-Safe Thermostats offer premium, patented technology for superior protection over any thermostat on the market. Only Fail-Safe is designed to lock in the open position when overheating occurs due to a failing cooling system component. This allows maximum coolant flow, thus preventing expensive engine damage.

  • MotoRad Fail-Safe Thermostats offer premium, patented technology for superior protection over any thermostat on the market. Only Fail-Safe is designed to lock in the open position when overheating occurs due to a failing cooling system component. This allows maximum coolant flow, thus preventing expensive engine damage.
  • When standard thermostats fail, they lock in the closed position and prevent coolant flow to the engine, which can cause serious damage to your engine. In the case of MotoRad Fail-Safe Thermostats, when overheating is caused by a deteriorating cooling system part, the fail-safe activates a precision-engineered piston. This automatically locks the valve into a wide-open position to allow coolant to circulate freely.
  • Fits select Chrysler Aspen, Dodge Dakota, Durango, Nitro, Ram 1500, Ram 2500, Jeep Commander, Grand Cherokee, Liberty, and Mitsubishi Raider. Be sure to select your vehicle above to verify this product will fit your specific application.
  • MotoRad thermostats are made with the highest quality materials from an OE supplier. They are 100 percent tested and calibrated.

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