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