This Toyota 4-Runner from St. Peters Missouri picked out an ARB air locking differential to install into his rear Toyota housing in his 2000 Toyota 4Runner. Axle Boy Offroad Performance Technician Brian performs a diagnostic dissasembly, and installs the air locker with a Yukon Gear ring and pinion and Master install package. The gear pattern is checked and the drop out is reinstalled into the vehicle. The ARB minicompressor is installed underhood for a relable yet compact air source. The dash pictures show the future location of the control switches. ARB explains in the following video.