For 1994-1997 Ford F250 F350 19 Gal. Ford utilized a 16/17 gal. The correct sending unit for the 16/17 gal. fuel tank is TREXFMSU-9DES The 16/17 gal. that utilized a plastic/nylon threaded nut to secure the sending unit to the tank, this is NOT the correct sending unit for that application.
