OER Parts offers a wide selection of Oil System & Parts for your 1968 Pontiac Executive. OER Parts offers 1968 Pontiac Executive Bypass Valves, 1968 Pontiac Executive Dipsticks and Tubes, 1968 Pontiac Executive Filter Adapters, 1968 Pontiac Executive Oil Coolers, 1968 Pontiac Executive Oil Filters, 1968 Pontiac Executive Oil Pan Baffles, 1968 Pontiac Executive Oil Pans, 1968 Pontiac Executive Oil Pickup Tubes, 1968 Pontiac Executive Oil Pumps, and 1968 Pontiac Executive Oil Senders.