USA Standard Spartan Locker For Ford 9in / 28 or 31 Spline

The Spartan Locker is a lunchbox locker that delivers reliable, 100% lockup traction at a low cost. It's design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap!

• Works with stock side gears in standard carrier case
• Mechanical locker delivers reliable 100% lockup
• Fits Ford 8" and 9" with 28 or 31 spline axles
• Made from 9310 steel for added strength