OTC 6985 Fan Clutch Service Kit for Mercedes-Benz and BMW Mercedes-Benz fan clutch holding wrench holds the water pump pulley to allow release of the fan Mercedes-Benz fan clutch wrench removes the thermo-viscous radiator fans found on Mercedes-Benz and Ford vehicles BMW Fan clutch holding wrench holds the water pump pulley in place while loosening the radiator fan BMW fan clutch wrench is used to remove and install the thermo-viscous fan on BMWs and Fords Universal fan belt adjustment wrench services Mercedes-Benz Nissan Quest and Mercury Villager radiator fans and pulley belts