The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. The Spartan locker's design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap!
Compatible Differentials
Ford 8.8" - 31 Spline
Ford 8.8", '11 & up F150 only - 31 spline
Compatible Make / Model
Ford Bronco (1983 - 1996)
Ford E-100 1/2 Ton (1983 - 1983)
Ford E-150 1/2 Ton (1983 - 2014)
Ford E-250 3/4 Ton (1983 - 1998)
Ford Expedition (1997 - 2001)
Ford Explorer (1991 - 2001)
Ford Explorer Sport Trac (2001 - 2010)
Ford F-150 1/2 Ton (1983 - 2014)