OER Parts offers a wide selection of Oil System & Parts for your 1972 GMC All Models. OER Parts offers 1972 GMC All Models Bypass Valves, 1972 GMC All Models Dipsticks and Tubes, 1972 GMC All Models Filter Adapters, 1972 GMC All Models Oil Coolers, 1972 GMC All Models Oil Filters, 1972 GMC All Models Oil Pan Baffles, 1972 GMC All Models Oil Pans, 1972 GMC All Models Oil Pickup Tubes, 1972 GMC All Models Oil Pumps, and 1972 GMC All Models Oil Senders.