OER Parts offers a wide selection of Battery Parts & Hardware for your 1978 GMC C35. OER Parts offers 1978 GMC C35 Battery Trays, 1978 GMC C35 Battery Hold Down J-Bolts, 1978 GMC C35 Battery Tray Hold-Down Clamp, 1978 GMC C35 Top Battery Tray Clamp, 1978 GMC C35 Battery Tray Brace, 1978 GMC C35 Quick Release Battery Cable Bolts, 1978 GMC C35 Side Terminal Battery Cable Bolts, 1978 GMC C35 Side Terminal Battery Charging Post, and 1978 GMC C35 Side Post Battery Cable Terminal.