1523 1958-1973 Land Rover Series II, IIA, III water pump for Both Gas and DieselFlowkooler High Flow pump for the Land Rover Series II, IIA and III has a CNC machined billet impeller designed with an increased vane count and a reduced plate to impeller 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 which protects against corrosive fluids. Slow speed rock crawling means lower fluid flow and limited air flow. A