Motorad 247-174 Engine Coolant Thermostat

Engine Cooling Control for OE-Style Fitment

The Motorad Standard 247-174 engine coolant thermostat is built for precise temperature control in a wide range of European and domestic applications. With a 174 degree F opening temperature, copper case construction, and wax compound response, it is made to react quickly to coolant temperature changes and support stable engine operating temperatures.

Compatible with select Audi, BMW, Mercedes-Benz, Volkswagen, Jeep, Lincoln, and Volvo models, this thermostat is a direct-fit replacement for many 174F applications, including Mercedes-Benz 300D, BMW 325i, and Audi 4000 fitments.

Key Features

• Motorad Standard line engine coolant thermostat
• Part number 247-174
• 174 degree F start-to-open temperature
• Copper case and wax compound for responsive temperature control
• Manufactured to OEM specifications and processes
• OE supplier construction with OEM-quality materials and safety standards
• Offset design and air relief valve included where applicable
• OEM-style seals included where applicable
• Sealing flange outside diameter: 2.64 in
• Height: 1.99 in; height between flanges: 1.39 in

Product Details

The Motorad Standard line focuses on OE-style cooling system service parts built to match factory specifications. This 247-174 thermostat uses a copper case and wax compound to respond quickly as coolant temperature rises and falls, helping maintain consistent engine temperature control in demanding cooling systems. It is a standard-type thermostat with a 174 degree F rating and is listed with bypass dimensions of 1.46 in diameter and 1.36 in length. This part cross-references Gates 24774 and Anchor 3587 for the same application.

Common Cooling Issues It Can Address

• Engine running too cool or too warm due to thermostat wear
• Delayed coolant temperature response after startup
• Temperature fluctuation during stop-and-go driving
• Cooling system service on older Audi, BMW, Mercedes-Benz, Volkswagen, Jeep, Lincoln, or Volvo vehicles
• Replacement of a thermostat that no longer opens at the specified 174 degree F range

Installation Notes and Fitment

Install with the correct housing and sealing surfaces cleaned before assembly. This thermostat does not include a gasket or seal, and no installation tool is included. Verify bypass dimensions and housing style before installation, especially on applications that use offset design or air relief features.

• Fits 2003 Volkswagen EuroVan, N/A
• Fits 1992-1995 Volkswagen EuroVan, N/A
• Fits 1999 Mercedes-Benz E300, N/A
• Fits 1995 Mercedes-Benz E300, N/A
• Fits 1995-1997 Audi S6, N/A
• Fits 1995 BMW 325i, N/A
• Fits 1990-1991 BMW 325i, N/A
• Fits 1994-1995 BMW 325is, N/A
• Fits 1990-1991 BMW 325is, N/A
• Fits 1992-1994 Audi S4, N/A
• Fits 1991-1992 Audi 80, N/A
• Fits 1991-1992 Audi 80 Quattro, N/A
• Fits 1988-1989 Audi 80 Quattro, N/A
• Fits 1989-1991 Audi 100, N/A
• Fits 1989-1991 Audi 100 Quattro, N/A
• Fits 1989-1991 Audi 200, N/A
• Fits 1989-1991 Audi 200 Quattro, N/A
• Fits 1991 Audi 90, N/A
• Fits 1988-1989 Audi 90, N/A
• Fits 1991 Audi 90 Quattro, N/A
• Fits 1988-1989 Audi 90 Quattro, N/A
• Fits 1990-1991 Audi Coupe Quattro, N/A
• Fits 1991 Audi V8 Quattro, N/A
• Fits 1990-1991 BMW 325iX, N/A
• Fits 1990-1991 BMW 535i, N/A
• Fits 1990 BMW 525i, N/A
• Fits 1990 BMW 735i, N/A
• Fits 1990 BMW 735iL, N/A
• Fits 1986-1988 Audi 5000 Quattro, N/A
• Fits 1983-1988 Volkswagen Quantum, N/A
• Fits 1980-1987 Audi 4000, N/A
• Fits 1984-1987 Audi 4000 Quattro, N/A
• Fits 1981-1987 Audi Coupe, N/A
• Fits 1986-1987 BMW 325e, N/A
• Fits 1986-1987 BMW 325es, N/A
• Fits 1985-1987 Jeep Cherokee, N/A
• Fits 1986-1987 Jeep Comanche, N/A
• Fits 1986 Mercedes-Benz 300SDL, N/A
• Fits 1986 Volvo 740, N/A
• Fits 1983-1985 Audi Quattro, N/A
• Fits 1985 Jeep Wagoneer, N/A
• Fits 1984-1985 Lincoln Continental, N/A
• Fits 1984-1985 Lincoln Mark VII, N/A
• Fits 1978-1985 Mercedes-Benz 300D, N/A
• Fits 1976 Mercedes-Benz 300D, N/A
• Fits 1978-1985 Mercedes-Benz 300SD, N/A
• Fits 1979-1985 Mercedes-Benz 300TD, N/A
• Fits 1985 Volvo 745, N/A
• Fits 1983-1985 Volvo 760, N/A
• Fits 1977-1979 BMW 320i, N/A
• Fits 1975 Mercedes-Benz 300D, N/A
• Fits 1960-1962 Mercedes-Benz 300D, N/A

Quality Assurance

Motorad manufactures this thermostat with OEM-quality materials and OE-supplier production standards, using OEM specifications and processes for consistent fit and temperature control performance.