OER Parts offers a wide selection of Oil System & Parts for your 1973 Ford Mustang. OER Parts offers 1973 Ford Mustang Bypass Valves, 1973 Ford Mustang Dipsticks and Tubes, 1973 Ford Mustang Filter Adapters, 1973 Ford Mustang Oil Coolers, 1973 Ford Mustang Oil Filters, 1973 Ford Mustang Oil Pan Baffles, 1973 Ford Mustang Oil Pans, 1973 Ford Mustang Oil Pickup Tubes, 1973 Ford Mustang Oil Pumps, and 1973 Ford Mustang Oil Senders.