This is a genuine Dana Spicer ring and pinion in a 4:44 ratio for the S111 rear differential found in many medium duty trucks. This kit includes a set of ring gear bolts and a pinion nut.

This is a ring & pinion gear set in a 3:07 ratio for the 8.25 rear axle found in some Dodge and Jeep applications. These were fairly common in later model Jeep Grand Cherokee’s. This gear set has 2 bolt patterns, a standard 3/8″ and a metric 10mm. We have sold and used many of [...]

This is a genuine AAM ring and pinion in a 4:56 ratio for Dodge Ram 2500 series trucks with the 10.5 rear axle. Please beware that some 2500 trucks had the 11.5 rear axle.

This is a genuine AAM ring and pinion set in a 3:73 ratio that fits 2011 and newer Ford F250 and F350 trucks with the 10.5 rear differential. This kit includes both pinion bearings and races, crush sleeve, pinion seal, nut, and a set of ring gear bolts. This pinion has 37 splines where the [...]

This is a genuine AAM ring and pinion set in a 4:30 ratio that fits 2011 and newer Ford F250 and F350 trucks with the 10.5 rear differential. This kit includes both pinion bearings and races, crush sleeve, pinion seal, nut, and a set of ring gear bolts. This pinion has 37 splines where the [...]

This is a genuine Dana/Spicer gear set, in a 3:73 ratio for the M300 rear differential found in late model Ford F350 series trucks. The pinion number is 10018690 and the ring gear is 10018689. Please note that Dana does not offer a 41 spline differential for this ratio, so it can’t be used in [...]

This is a genuine Dana/Spicer gear set, in a 4:10 ratio for the M300 rear differential found in late model Ford F350 and F450 series trucks. The pinion number is 2010904 and the ring gear is 2010903. This replaces Ford part numbers LC3Z4209G or HC3Z4209K.