OER Parts offers a wide selection of Cooling System Components for your 1970 Buick GS 455. OER Parts offers 1970 Buick GS 455 Molded Radiator Hoses, 1970 Buick GS 455 Upper Radiator Hoses, 1970 Buick GS 455 Lower Radiator Hose, 1970 Buick GS 455 Water Pump Bypass Hose, 1970 Buick GS 455 Oil Cooler to Radiator Hose, 1970 Buick GS 455 Throttle Body to Radiator Coolant Hose, and 1970 Buick GS 455 Universal Engine Coolant Plumbing Set.