OER Parts offers a wide selection of Cooling System Components for your 1970 GMC C35/C3500 Pickup. OER Parts offers 1970 GMC C35/C3500 Pickup Hose Clamps, 1970 GMC C35/C3500 Pickup Heater Hose Clamps, 1970 GMC C35/C3500 Pickup Radiator Hose Clamps, 1970 GMC C35/C3500 Pickup Tower Style Hose Clamps, 1970 GMC C35/C3500 Pickup Heat-Shrink Hose Clamps, 1970 GMC C35/C3500 Pickup Corbin Style Hose Clamps, and 1970 GMC C35/C3500 Pickup Radiator & Heater Hose Clamp Set.