ARB Airlocker Dana60Hd 4.10&Dn S/N..

The world's premier traction aid, an ARB Air Locker(TM) keep you moving in all conditions. With the flick of the switch an Air Locker gives instant lock at any moment and its super strong design allows activation at any speed allowing you to tackle the toughest terrain. The advantage of the Air Locker lies in the pneumatically operated locking system inside the differential. When activated, the Air Locker prevents the internal differential gears from rotating and therefore prevents the axle shafts from turning independently of each other. With both wheels tied directly to the rotation of the ring gear, the vehicle maintains maximum possible traction at all times. When unlocked, it operates like a conventional open differential. An Air Locker equipped vehicle can be driven in a slower, safer and more controlled manner, greatly reducing the likelihood of vehicle damage and environmental impact. Product Specifications Sheet Warranty Installation Instructions This Part Fits: Year Make Model Submodel 1975-1981 Chevrolet C20 Cheyenne 1981-1986 Chevrolet C20 Custom 1975-1980 Chevrolet C20 Custom Deluxe 1981 Chevrolet C20 Deluxe 1975-1986 Chevrolet C20 Scottsdale 1975-1986 Chevrolet C20 Silverado 1970-1974 Chevrolet C20 Pickup Base 1975-1981 Chevrolet C30 Cheyenne 1981-1986 Chevrolet C30 Custom 1975-1980 Chevrolet C30 Custom Deluxe 1981 Chevrolet C30 Deluxe 1975-1986 Chevrolet C30 Scottsdale 1975-1986 Chevrolet C30 Silverado 1970-1974 Chevrolet C30 Pickup Base 1975-1986 Chevrolet G30 Beauville 1983-1984 Chevrolet G30 Bonaventure 1975-1986 Chevrolet G30 Chevy Van 1975-1986 Chevrolet G30 Hi-Cube 1975-1986 Chevrolet G30 Sportvan 1968 Chevrolet K10 Suburban Base 1975-1981 Chevrolet K20 Cheyenne 1981-1986 Chevrolet K20 Custom 1975-1980 Chevrolet K20 Custom Deluxe 1981 Chevrolet K20 Deluxe 1975-1986 Chevrolet K20 Scottsdale 1975-1983,1985-1986 Chevrolet K20 Silverado 1970-1974 Chevrolet K20 Pickup Base 1973-1974 Chevrolet K20 Suburban Base 1981 Che…