Item specifications:Specifications: Direct replacement Built to strict quality control standards Correct for Center Tank on Diesel models with 6.75 foot bed Not correct for Gas Engine or Cab Chassis models Compatible with:1999 Ford F250 Super Duty Truck V8 7.3L Turbo Diesel with 6.75 Foot Bed Center Tank2000-10 Ford F250 Super Duty Truck Diesel with Single Rear Wheels (SRW) with 6.75 Foot Bed Center Tank1999-10 Ford F350 Super Duty Truck Diesel with Single Rear Wheels (SRW) with 6.75 Foot Bed Center Tank