This Transfer Case Rebuild Kit for is for a Jeep New Process 231 Transfer Case for years 1994-01 This transfer case rebuild kit is for an aluminum transfer case it is chain driven and uses the narrow input bearing 6010N (16mm). You can identify this transfer case by the round tag that is stamped 231J. This kit includes all main roller bearings, caged needle bearings, seals, (2) planet washers, o-rings, fork inserts, and an adaptor gasket.