Powertrax locking differentials keep the wheels locked together when ever torque is applied so that together the left and right wheels always deliver maximum traction to the ground; neither wheel can spin out. From Trail Tough
When operating off-road, the LOCK-RIGHT will always send the engine power to the wheels that need it most. For example, if you are rock crawling and one wheel is in the air (complete loss of traction), the wheel on the ground will receive the engine power and keep you going. Whether it be snow, sand, mud, ice, etc… the LOCK-RIGHT will give you the traction you need. Fits both front and rear.
Note: 1990 up Samurais must use early style carrier when using this locker in the front.