The Eaton Detroit Locker is a 100% automatic locking differential built for maximum traction in demanding rear-drive applications. This 35-spline variant uses a 1.50" axle shaft diameter, fits 9" rear housings and is intended for 3.25 and up ring gear ratios. It locks both wheels under load, works in forward and reverse, and is clutchless and maintenance-free; the product description also notes compatibility with various Ford/Lincoln/Mercury car and small-truck platforms.
Eaton Detroit Locker Differential 35 Spline 1.50in Axle Shaft Diameter 3.25 & Up Ratio Rear 9in