NP231 Dodge/GM/Chevy New Process 231 Transfer Case Rebuild kit for: Dodge 1500-3500 5.2L 1994-2001 Dodge 1500-3500 5.9L 1994-2001 Dodge Dakota 3.9L 1994-2000 Dodge Dakota 4.7L 2000 Dodge Dakota 5.2L 1994-1999 Dodge Durango 6 Cyl 3.9L 1998-1999 Dodge Durango 8 Cyl 5.2L 1998-2000 Dodge Durango 8 Cyl 5.9L 1998-2003 Chevy Blazer 6Cyl 4.3L 1995-1997 Chevy S10 6Cyl 4.3L 1995-1997 This transfer case rebuild kit is for an aluminum transfer case kit and is for the chain driven transfer case only. It has a thinner 6010-N (.63") input bearing This is the kit that uses the thick input bearing be sure to measure this bearing as it could be the thicker BD50-8 (.94"). You can identify this transfer case by the round tag that is stamped 231D or NP231C. This kit includes all main roller bearings, caged needle bearings, seals, (2) planet washers, o-rings, fork inserts, an a adapter gasket. BK231A