GM Genuine Parts Engine Cooling Fans are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These fans move air across the radiator and A/C condenser to remove heat from the engine cooling system and the A/C refrigerant system. The fans may be belt driven or operated by an electric motor. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).