Fits: 6.5l Turbo Diesel 1997-2002 (Threaded Water Pumps Only)
Water pump must accept spin on fan clutch. Engages at ~170°F radiator air temperature, (~200F coolant temperature).
If your 6.5l is facing high coolant temperatures this fan clutch can help keep the engine cool. Pair it with water pump #: 251-603 and Duramax Cooling fan #: 1580690 for best results. In some cases the Duramax cooling fan mod may require slight fan shroud trimming or the replacement of worn engine mounts.
