OER Parts offers a wide selection of Oil System & Parts for your 1969 Mercury Cougar. OER Parts offers 1969 Mercury Cougar Bypass Valves, 1969 Mercury Cougar Dipsticks and Tubes, 1969 Mercury Cougar Filter Adapters, 1969 Mercury Cougar Oil Coolers, 1969 Mercury Cougar Oil Filters, 1969 Mercury Cougar Oil Pan Baffles, 1969 Mercury Cougar Oil Pans, 1969 Mercury Cougar Oil Pickup Tubes, 1969 Mercury Cougar Oil Pumps, and 1969 Mercury Cougar Oil Senders.