Specifications: 1994-1997 Ford Full-Size Pickup 19 gallon DIESEL ONLY (rear/aft axle)fuel tank sending unit. Does NOT include a filter, but it does include a new lock ring and O-ring.Will NOT work with Gas engines. 1994-1997 Ford Full-Size Pickup 19 gallon DIESEL ONLY (front, side, midship) fuel tank sending unit. Does NOT include a filter, but it does include a new lock ring and O-ring.Will NOT work with Gas engines. Ohm range: Full 155-165, Empty 5-15. OE Number: FMSU-9DER, FMSU-9DE Application: For 1994-1997 Ford F-250 7.3L For 1994-1997 Ford F-350 7.3L Package Include: 2 x Diesel Pickup Sending unit .