Advance Adapter
Our Advance Adapter 50-6402 will allow you to adapt a GM TH400 3 speed automatic transmission to the Jeep NP231 transfer case. The adapter housing is 1.250" in length and is manufactured from 356-T6 heat treated aluminum alloy. We also supply a mounting provision on the bottom of the housing to bolt-on our heavy duty transmission mount (716008). The adapter kit includes an adapter housing, new 27 spline TH400 output shaft, new 27 spline NP231 input gear, gaskets, seal, fastening hardware, and adapter instructions.
Transfer Case
The adapter assembly will fit the Jeep NP231 transfer case. 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 Advance Adapter kit is designed to fit Jeep New Process 231 only
Transmission
This adapter kit is designed for exclusive use with the GM TH400 automatic.
Bill Of Materials
Products specifications
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Transfer Cases
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Jeep New Process 231 (21 Spline Input) |
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Transfer Cases
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Jeep New Process 231 (23 Spline Input) |
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Transfer Cases
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Jeep New Process 241 (23 Spline) |
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Transfer Cases
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Jeep New Process 241OR (23 Spline) |
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Transmissions
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GM TH400 Automatic 2 Wheel Drive GM 1965-1986 |
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Transmissions
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GM TH400 Automatic 4 Wheel Drive GM 1965-1986 |
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