You’ve found Marlin Crawler’s Exclusive Total Spline 23-spline 2.28:1 transfer case input gear! This listing is for our XD Version which has slightly less Ultimate Strength than our Competition version found here.
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. Commonly used in crawl boxes for a number of later model applications. 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
Build your transfer case right the first time, and put your tools away!