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, and used in all our 1979-2023+ Dual 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
Also available made from our Competition material, click here for info
Build your transfer case right the first time, and put your tools away!
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WARNING: Products we sell can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.