OER Parts offers a wide selection of Cooling System Components for your 1978 GMC C25 Suburban. OER Parts offers 1978 GMC C25 Suburban Hose Clamps, 1978 GMC C25 Suburban Heater Hose Clamps, 1978 GMC C25 Suburban Radiator Hose Clamps, 1978 GMC C25 Suburban Tower Style Hose Clamps, 1978 GMC C25 Suburban Heat-Shrink Hose Clamps, 1978 GMC C25 Suburban Corbin Style Hose Clamps, and 1978 GMC C25 Suburban Radiator & Heater Hose Clamp Set.