OER Parts offers a wide selection of Cooling System Components for your 1961 GMC 1000 Series. OER Parts offers 1961 GMC 1000 Series Molded Radiator Hoses, 1961 GMC 1000 Series Upper Radiator Hoses, 1961 GMC 1000 Series Lower Radiator Hose, 1961 GMC 1000 Series Water Pump Bypass Hose, 1961 GMC 1000 Series Oil Cooler to Radiator Hose, 1961 GMC 1000 Series Throttle Body to Radiator Coolant Hose, and 1961 GMC 1000 Series Universal Engine Coolant Plumbing Set.