The oil filter adapter allows the installation of oil filters with 1"-16 threads, including FORD Motorcraft FL-2051S & Baldwin B7379 (Have Relief Valve), Fleetguard LF9028, Donaldson ELF7349, Baldwin BD7317, Fram PH3976A, Fram XG3976A and Mopar MO-285 filters, on vehicles with male 3/4"-16 oil filter mount threads.