With a TJM Pro Locker installed, you may never get stuck again! This Pro Locker has been designed to suit the front of Nissan Hardbody, Xterra, Pathfinder and Frontier with 31 spline axles. With a strong carrier assembly and one-piece cross shaft combined with a unique piston-style actuator, TJM has created one of the strongest and reliable diff-lockers on the market. TJM Pro Locker solves off-road traction problems with the simple flick of a switch from the drivers seat. An innovative air-operated design allows the diff-locker to provide equal drive to both sets of wheels for the ultimate in traction.