Jeep JL DIESEL 8-Speed Automatic to ATLAS Adapter and spud shaft that bolts to the rear of the stock transmission adapter changing the bolt pattern to a cirular 6 with a 23 spline output. This adapters fits the 2020 and newer Jeep JL with the Diesel engine. Bill Of Materials 850RE 8-Speed and DODGE 8HP870 8-Speed TO ATLAS / 51-9900 SHAFT- JEEP 23 INT x JEEP 23 EXT 6.9 OAL / 52-9904 SEALED BEARING 209RS / 716308 SNAP RING (T350 / T400) / 716450 TRUE ARC SNAP RING / 716456