This is a transfer case rebuild kit for the Dodge GM Chevy Jeep New Process 231 transfer case for years 1986-94 This transfer case rebuild kit is for an aluminum transfer case kit and is for the chain driven transfer case only. This transfer case has a wide input bearing BD50-8 (.94"). You can identify this transfer case by the round tag that is stamped 231D. This kit includes all main roller bearings, caged needle bearings, seals, (2) planet washers, o-rings, fork inserts, and an adaptor gasket.