Jeep T176 to Jeep NP207/231 21 Spline Transfer Case Adapter

 

The Jeep T176 4 speed transmission adapter to the Jeep NP207 / 231 is 7.00” in length. Adapter material is a strong 356-T6 heat treated aluminum alloy and the adapter has a provision for a transmission mount. The adapter kit includes a adapter housing, spud shaft, gaskets, fastening hardware and adapter instructions.

 

 

The adapter assembly will fit the Jeep NP207 transfer case with a 21 spline input shaft. A light duty New Process chain drive, part-time case with a low range of 2.72:1 that was introduced in1984 for the midsized Cherokee/Comanche XJ models. It was also used in 1987 in YJ Wrangler models.

 

The adapter assembly will fit the Jeep NP231 transfer case with a 21 spline input shaft. Introduced in 1988, the Jeep NP231 is a part-time transfer case became the standard for XJ and YJ models. It was also used in six cylinder ZJ models through 1995. Chain driven with a 2.72:1 low range, it’s reliable even with more than stock horsepower applied.

 

 

The kit is designed for exclusive use with the Jeep T-176, T-177, T-178 4 speed manual transmission. The T-176 was used in CJs from 1980-1986 and other Jeep trucks from 1980-1987. The T-177 and T-178 were not used in CJs, only in other Jeep trucks. They have an aluminum case with the casting number 2604203. This transmission has a 1 1/8" 10 spline input shaft and a 23 spine output shaft.