Description

This will convert a 21-spline 1979-1995 4-cylinder transfer case to a 23-spline version so that the stronger 5spd R150F (3.0L V6) and R151F (2.4L Turbo I4) transmissions may be used. Fits any gear driven t/case originally fitted to 4cyl 1979-1995 trucks and 4Runners, and used in all our 1979-2021+ Dual Case and TacoBox setups. Factory 2.28:1 Gear Ratio.