1895 1982-1993 Chevy GMC 6.2L Diesel CW water pumpAre you running hot when towing? Flowkooler designed a high flow water pump for the 6. 2L Diesel with a CNC machined billet aluminum impeller to stop the overheating at idle, under a load and in stop and go traffic. It has an increased vane count and a reduced casting to impeller vane clearance. It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller color is due to Type II Class II military grade surface coating