# MotoRad 7247-174 Fail Safe™ Series Thermostat for 1982-2003 Audi Quattro ### Specifications Bypass Diameter: 1.46" Bypass Length: 1.36" Flange Thickness: 0.068" Gasket or Seal included: No Installation Tool Included: No Jiggle Pin Weep Hole Included: No Sealing Flange Outside Diameter: 2.64" Temperature (Degree): 174F ### Features - Exclusive, patented design - High quality Stainless Steel and Copper construction - Locking technology prevents costly engine damage - 100% tested and calibrated - Manufactured with the highest quality materials from an OE supplier ### Product Details Fail Safe™ Series Thermostat by MotoRad®. Temperature: 174F. 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. Fail-Safe is designed to help protect your engine when overheating occurs. When overheating occurs, Fail-Safe automatically locks in the open position to permit maximum coolant flow. When standard thermostats fail, they lock in the closed position and prevent coolant flow to the engine, which can possibly cause serious damage to your engine. Fail-Safe has a patented safeguard against overheating damage. Fail-Safe thermostats are designed with a unique extra stroke that allows operation in two stages: Stage 1: Within normal operating temperatures, the Fail-Safe operates the same as any other thermostat. Stage 2: When overheating is caused by a deteriorating cooling system part, the Fail-Safe has a secondary stroke that activates a precision engineered piston that automatically locks the valve into a wide open position allowing coolant to circulate freely. Don’t be stranded on the side of the road because your engine overheated and your conventional thermostat failed in the closed position keeping coolant from flowing to the engine. Buy the best Thermostat on the market, the Fail-Safe Thermostat from Motorad. Why is the Fail-Safe the best thermostat? Under normal operating temperatures, the Fail-Safe operates in the same manner as a conventional thermostat. However, when your vehicle overheats due to a deteriorating cooling system part, a standard thermostat locks in the closed position blocking the flow of coolant to the engine. Motorad’s patented Fail-Safe Thermostat is the only thermostat that automatically locks in the open position allowing coolant to circulate freely throughout the engine during the overheating process. This can protect your engine from a more costly repair. Once the Fail-Safe thermostat does its job of allowing coolant to continue to flow to the engine during an overheating by locking in the open position, you must replace it with a new one. There are standard thermostats, then there is the Motorad Fail-Safe Thermostat. Ask for MotoRad’s Fail-Safe Thermostat the next time you need a new thermostat. Brand: MotoRad Part Number: 7247-174 UPC: 055644747743 Alternate MPN: 7247174 ### Vehicle Fitment Table Year Make Model Position Fitment Precision Note 1991 Audi Quattro 1992 Audi S4 1993 Audi S4 1994 Audi S4 1995 Audi S6 1996 Audi S6 1990 BMW 3-Series 1991 BMW 3-Series 1992 BMW 3-Series 1993 BMW 3-Series 1994 BMW 3-Series 1995 BMW 3-Series 1990 BMW 5-Series 1991 BMW 5-Series 1990 BMW 7-Series 1985 Jeep Cherokee 1986 Jeep Cherokee 1987 Jeep Cherokee 1986 Jeep Comanche 1987 Jeep Comanche 1985 Jeep Wagoneer 1984 Lincoln Continental 1985 Lincoln Continental 1984 Lincoln Mark VII 1985 Lincoln Mark VII 1995 Mercedes E Class 1999 Mercedes E Class 1992 Volkswagen Eurovan 1993 Volkswagen Eurovan 1994 Volkswagen Eurovan 1995 Volkswagen Eurovan 2003 Volkswagen Eurovan 1982 Volvo 240 Series 1983 Volvo 240 Series 1984 Volvo 240 Series 1985 Volvo 740 Series 1986 Volvo 740 Series ### FAQ **Will this fit my vehicle?** Please verify your year, make, model, position, and any fitment notes using the Vehicle Fitment Table above before purchase. **What part number is this?** The listed part number is 7247-174. **Is this product designed for direct replacement?** Yes. This product is intended to match the compatible vehicle applications listed in the fitment table. **Should I confirm fitment before ordering?** Yes. Always compare your original part, position, and vehicle details with the fitment table before ordering. ### Common Searches - Fail Safe™ Series Thermostat for Audi Quattro - 7247-174 fitment - MotoRad Fail Safe™ Series Thermostat - 1991 Audi Quattro Fail Safe™ Series Thermostat ## Details - **Price:** 26.96 CAD - **Vendor:** MotoRad - **Type:** Fail Safe™ Series Thermostat - **Tags:** 1982-1984 Volvo 240 Series, 1984-1985 Lincoln Continental, 1984-1985 Lincoln Mark VII, 1985 Jeep Wagoneer, 1985-1986 Volvo 740 Series, 1985-1987 Jeep Cherokee, 1986-1987 Jeep Comanche, 1990 BMW 7-Series, 1990-1991 BMW 5-Series, 1990-1995 BMW 3-Series, 1991 Audi Quattro, 1992-1994 Audi S4, 1992-1995, 1995, 1995-1996 Audi S6, 1999 Mercedes E Class, 2003 Volkswagen Eurovan, 7247-174, Automotive, Fail Safe™ Series Thermostat, MotoRad ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 26.96 CAD | In stock | ## Images - MotoRad 7247-174 Fail Safe™ Series Thermostat for 1982-2003 Audi Quattro --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/motorad-7247-174-fail-safetm-series-thermostat) > Updated: 2026-08-18