The factory adapter assembly is considered weak and prone to breaking.
The individual components of our Advance Adapter kit will not work with the stock Jeep adapter parts. The adapter kit includes a adapter housing, new 15 teeth coupler shaft, bearing, snap rings, gaskets, seal, fastening hardware, and adapter instructions.The adapter will retain the original Jeep transmission mount and is identical in length. AMC TH400 to Jeep Dana 20;Replacement factory adapter assembly;California Residents: WARNING Advance Adapters GM TH400 Transmission To Dana 20 Transfer Case Adapter - 50-0500 On all Jeep vehicles that were equipped with the AMC TH400 and Dana 20 transfer case, this adapter kit is designed to replace the original Jeep adapter.