OER Parts offers a wide selection of Cooling System Components for your 1948 Chevrolet Fleetline Truck. OER Parts offers 1948 Chevrolet Fleetline Truck Radiator Hardware, 1948 Chevrolet Fleetline Truck Petcocks, 1948 Chevrolet Fleetline Truck Radiator Petcocks, 1948 Chevrolet Fleetline Truck Brass Radiator Petcocks, 1948 Chevrolet Fleetline Truck Radiator Drain Petcock with Hose, and 1948 Chevrolet Fleetline Truck Cooling System Zinc Anode.