This fan clutch nut wrench & water pump holder removal tool kit for BMW is used to remove water pump on models with temperature dependent viscosity drive fans. It is suitable for BMW engine models such as M4. M10. M20. M30. M40. M44. M50. M52. M52TU, M54. M56. M60. M70. M73. S14. S38. S54. S50B30. S50B32. This tool kit is delivered with a fan clutch nut wrench for removing lock nuts on the thermo-Viscous fans and a water pump holder which allows the technician to hold the water pump pulley in place while loosening the radiator fan. The carbon steel material endows these tool with great strenth and durability.