USA Standard Spartan Locker For GM 12 Bolt Car & Truck w/ 30 Spline Axles

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!

• Fits GM 12 bolt car and truck with 30 spline axles
• Replaces the spiders in a standard carrier case
• Mechanical locker delivers reliable 100% lockup
• Made from 9310 steel for added strength