A: Hi Calvin The FIR6401 is only the replacement air bag for the kit. The kits for your 2013 F250 are very specific. The F250 Diesel needs kit number FIR2535 for both 2WD and 4X4. The F250 2WD GAS needs kit number FIR2550. The F250 4X4 GAS needs kit number FIR2535. The FIR2535 kit will also fit if you have the Factory Ford in bed hitch. I hope this will help you. The Firestone Air Bag kits are excellent. Thank You Jon Snyder 4Wheelparts

A: Thanks for the inquiry Rich, the Firestone Ride-Rite Ride-Rite Air Helper Spring part # FIR6401 we would need more details regarding your vehicle, we do charge per pair installation w/o a compressor $275.00 and with $660.00 for labor.