OER Parts offers a wide selection of Cooling System Components for your 1971 Chevrolet K30 Pickup. OER Parts offers 1971 Chevrolet K30 Pickup Molded Radiator Hoses, 1971 Chevrolet K30 Pickup Upper Radiator Hoses, 1971 Chevrolet K30 Pickup Lower Radiator Hose, 1971 Chevrolet K30 Pickup Water Pump Bypass Hose, 1971 Chevrolet K30 Pickup Oil Cooler to Radiator Hose, 1971 Chevrolet K30 Pickup Throttle Body to Radiator Coolant Hose, and 1971 Chevrolet K30 Pickup Universal Engine Coolant Plumbing Set.