Quick view ARB Airlocker Dana44 35Spl 3.73&Dn S/N - RD147 Compare $1,091.00 Air locker locking differentials allow you to tackle the toughest terrain. The worlds premier traction aid, ARB air lockers keep you moving in all conditions.A complete air locker kit: replacement differential, activation switch, solenoid valve, air line... Add to Cart Add to Cart