OER Parts offers a wide selection of Cooling System Components for your 2003 Chevrolet Truck. OER Parts offers 2003 Chevrolet Truck Hose Clamps, 2003 Chevrolet Truck Heater Hose Clamps, 2003 Chevrolet Truck Radiator Hose Clamps, 2003 Chevrolet Truck Tower Style Hose Clamps, 2003 Chevrolet Truck Heat-Shrink Hose Clamps, 2003 Chevrolet Truck Corbin Style Hose Clamps, and 2003 Chevrolet Truck Radiator & Heater Hose Clamp Set.