USA Standard Spartan Locker For Model 20 Diff w/ 29 Spline Axles / Incl. Heavy-Duty Cross Pin Shaft - SL M20-29

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...

USA Standard Spartan Locker For GM 8.5in w/ 30 Spline Axles / Incl. Heavy-Duty Cross Pin Shaft - SL GM8.5-30

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...

USA Standard Spartan Locker For GM 8.5in w/ 28 Spline Axles / Incl. Heavy-Duty Cross Pin Shaft - SL GM8.5-28

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...

USA Standard Spartan Locker For GM 12 Bolt Car & Truck w/ 30 Spline Axles - SL GM12-30

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...

USA Standard Spartan Locker For Ford 9in / 28 or 31 Spline - SL F9-28-31

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...

USA Standard Spartan Locker For Ford 8.8in / 31 Spline / Incl. Heavy-Duty Cross Pin Shaft - SL F8.8-31

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...

USA Standard Spartan Locker For Dana 60 Diff w/ 35 Spline Axles / Incl. Heavy-Duty Cross Pin Shaft - SL D60-35

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...

USA Standard Spartan Locker For Dana Spicer 60 w/ 30 Spline Axles / Incl. Heavy-Duty Cross Pin Shaft - SL D60-30

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...

USA Standard Spartan Locker For Dana 44HD Diff w/ 30 Spline Axles / Incl. Heavy-Duty Cross Pin Shaft - SL D44HD-30

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...

USA Standard Spartan Locker For Dana 44 Diff w/ 30 Spline Axles / Incl. Heavy-Duty Cross Pin Shaft - SL D44-30

The Spartan Locker by USA Standard Gear provides reliable traction at a low cost. The Spartan Locker's patent pending design replaces the spider gears in a standard carrier case, does not use the...

USA Standard Spartan Locker For Dana 44 Diff w/ 19 Spline Axles / Incl. Heavy-Duty Cross Pin Shaft - SL D44-19

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...

USA Standard Spartan Locker For Dana 30 Diff w/ 27 Spline Axles / Incl. Heavy-Duty Cross Pin Shaft - SL D30-27

The Spartan Locker by USA Standard Gear provides reliable traction at a low cost. The Spartan Locker's patent pending design replaces the spider gears in a standard carrier case, does not use the...