1781 1973-1991 Jeep AMC 304 360 401 water pumpFlowkooler high flow pump 1781 has a CNC machined billet impeller designed with an increased vane count and a reduced impeller clearance to achieve greater flow rates, higher block pressure. A Type II Class II military grade anodize surface coating protects against corrosive fluids. We developed this hi flow pump because Jeeps tend to overheating in traffic and on the trail. Tight engine space and limited airflow plague the cooling system but it has