Eaton Detroit Locker Differential 30 Spline 1.31in Axle Shaft Dia 4.10 & Down Ratio Rear Dana 60/61

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.