The Dodge NV4500 adapter to the Jeep 23 spline NP231 is 5.875” in length. And the overall length of this transmission and adapter is 18.250”. Adapter material is 356 T6 heat treated aluminum alloy. The adapter has a provision for our heavy duty transmission mount. The adapter kit includes an adapter housing, NV4500 to NP231, seal, fastening hardware, and adapter instructions.
This adapter assembly will fit any Jeep New Process transfer case with a 23 spline input shaft. Jeep TJ optional transfer case bracket is AA-715542 and Jeep YJ's use optional bracket AA-715531. The use of the TJ bracket will require modifications to the adapter housing.
The adapter kit is designed for exclusive use with a Dodge 4WD NV4500 Transmission with a 23 spline output shaft.
Upgrade your 21 spline Jeep NP231 to a 23 spline input using part number AA-716054.