This is a genuine AAM pinion crush sleeve that fits the 9.76 12 bolt rear found in 2014 and newer GM trucks. 

This is a genuine AAM rear axle tone ring for the 11.5 rear differential found in many 2014 and newer GM 3500 trucks. There is one of these tone rings on either side. They are located just outside of the adjuster and use a plastic retainer (40114669) to hold them in place.

This is a genuine AAM ring gear bolt for the 9.5 or 9.76 rear differential found in some 2014 and newer GM 1/2 ton trucks and SUV’s, as well as 2014 and newer Dodge Ram 2500 and 3500 series trucks with the 9.25 front differential and 12 bolt cover. These are left handed thread and [...]

This is a genuine Dana/Spicer pinion depth shim kit for the M300 rear differential found in many 2017 and newer Ford F350, F450, and F550 series trucks. This kit includes 12 individual shims.

This is a genuine Dana/Spicer shim kit, used to set the pinion depth on a M300 rear axle found in 2017+ Ford F350, F450, and F550 series trucks.