Only applicable to the following engine models in the BMW models described in the title: M4, M10, M20, M30, M40, M44, M50, M52, M52TU, M54, M56, M60, M70, M73, S14, S38, S50B30, S50B32.
In order to disassemble the water pump on models with temperature-dependent viscosity-driven fans. Note: This 32mm fan clutch nut wrench is only compatible with BMW engines.
The fan clutch wrench removed the lock nut on the hot-tack fan.
The fan clutch bracket allows the technician to fix the water pump pulley in place while loosening the radiator fan.