Air shift system works on all OX lockers and will retrofit. 85 psi Min. Complete Air Actuation System. Kit includes heavy duty air cylinder, dash mounted switch, quick connectors, 1/4"OD tubing.Kit designed for retrofit of OX Locker (do not order with new locker)Our air system does not pressurize your axle housing, compromising your axle and pinion seals.Air source not includedAir Shift System Features: