OER Parts offers a wide selection of Oil System & Parts for your 1974 Pontiac LeMans. OER Parts offers 1974 Pontiac LeMans Bypass Valves, 1974 Pontiac LeMans Dipsticks and Tubes, 1974 Pontiac LeMans Filter Adapters, 1974 Pontiac LeMans Oil Coolers, 1974 Pontiac LeMans Oil Filters, 1974 Pontiac LeMans Oil Pan Baffles, 1974 Pontiac LeMans Oil Pans, 1974 Pontiac LeMans Oil Pickup Tubes, 1974 Pontiac LeMans Oil Pumps, and 1974 Pontiac LeMans Oil Senders.