Eaton Detroit Locker Differential 35 Spline 1.50in Axle Shaft Diameter 4.10 & Down Ratio Dana 60HD - 225SL29B

The Detroit Locker is a 100% automatic locking differential that provides ultimate traction for mild to extreme vehicle applications. Its unique, bullet-proof design is engineered to keep both wheels in drive mode – even if one wheel is lifted off the ground. It works in forward and reverse, and features unmatched strength, 100 percent automatic locking, and maintenance-free parts.