OER Parts offers a wide selection of Oil System & Parts for your 1961 GMC Suburban. OER Parts offers 1961 GMC Suburban Bypass Valves, 1961 GMC Suburban Dipsticks and Tubes, 1961 GMC Suburban Filter Adapters, 1961 GMC Suburban Oil Coolers, 1961 GMC Suburban Oil Filters, 1961 GMC Suburban Oil Pan Baffles, 1961 GMC Suburban Oil Pans, 1961 GMC Suburban Oil Pickup Tubes, 1961 GMC Suburban Oil Pumps, and 1961 GMC Suburban Oil Senders.