This is a transmission rebuild kit for the 5 speed Dodge truck 2x2 or 4x4 with the NV4500 "MT8" Transmission You can identify this transmission in a Dodge by the cast "C-18157" or "C-23167". This transmission has an iron case with an aluminum top cover! This transmission usually comes in the 1994-ON Dodge Cummins Turbo diesel truck. This kit includes all new high quality bearings, seals, and gaskets