Detroit Locker Ford 9-inch 31-Spline

The Eaton Detroit Locker is a legendary, 100% automatic locking differential that has set the standard for performance differentials. Designed for Ford 9-inch rears and requiring 31-spline axles, this differential provides unparalleled traction for a wide range of vehicle applications, from mild to extreme. Engineered with a unique, bullet-proof design, the Detroit Locker ensures both wheels stay engaged even if one loses contact with the ground. During acceleration and straight-line driving, it functions like a full spool, capturing and distributing 100% of the available torque equally to both wheels. For turns and maneuvers, the internal components unlock to permit differential wheel speeds, then re-engage seamlessly as the vehicle straightens out. This differential is renowned for its reliability in challenging conditions such as mud, snow, and rocks, making it a top choice for professional racers and off-road enthusiasts worldwide. The durability of the Detroit Locker is unmatched, and it comes with a one-year warranty against manufactured defects. The specific part number for this 31-spline Ford 9-inch application is 187SL17B.