Overview

You’ve found Marlin Crawler’s one-of-a-kind “Total Spline” 23-spline 2.28:1 transfer case input gear, the strongest 23-spline input gear in the world, now available in our Ultimate Strength Competition-grade Material! Made in Japan by Toyota’s own gear cutter. Experience the success of our Competition Series Chromoly Gears in your very own rig! 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+ Dual T/Case and TacoBox setups. Factory 2.28:1 Gear Ratio. This is the strongest 2.28:1 input gear in the world. • Total-Spline™ Technology • Heat Treated Chromoly Steel • Full-length Spline Engagement • Addresses one of the weakest parts of your t/case • Minimizes Dual Case Coupler wear, combats strip-outs