Product details:

Fits GM 8.5" with aftermarket positraction. Works with Heavy Duty Bearings. Includes carrier bearings and races and "super" carrier shim kit. Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. This kit contains carrier bearings, races and shims. This kit is used in 8.5" differentials using a Yukon Dura Grip, Eaton posi, ValueTrac, True Trac, Pro-Series Auburn, Detroit Locker or standard carrier with large bearing journals.