Eaton Detroit Locker Diff 30 Spline 1.31in Axle Shaft Diam 3.73 & Down Ratio Front/Rev Rear Dana 44The legendary Detroit Locker began the revolution in performance differentials and still leads the industry today as an Eaton brand. The Detroit Locker is the most durable and dependable locking differential available. The Detroit Locker maximizes traction by delivering 100 of the torque to both drive wheels. It is engineered to keep both wheels in a constant drive mode, and has the ability to automatically allow wheel speed differentiation when