This adapter kit will adapt the reduction housing of the GM NP203 to our Atlas 2 speed transfer case. The adapter length is 4.395” in length and is made from 356 T-6 heat treated aluminum alloy. The adapter kit includes an adapting casting, NP203 to Atlas output shaft, vent assembly, sealed bearing, gasket, fastening hardware, and adapter instructions.
The NP203 originally coupled to a SM465, TH400, and TH350.This full-time, cast iron case is made up of 4 housings. It is a chain-driven case with a front housing using helical cut gears offer a 2 to 1 gear ratio. This assembly was used in 1971-79 vehicles.