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Description

The AX15-21 is the 2nd speed gear used in the AX15 5-speed manual transmission found in various Jeep models.
It is manufactured from high-strength carburized alloy steel—commonly SAE8620 or SAE4320H—through a precise CNC machining and heat-treatment process. The gear is case-hardened via carburizing and quenching, delivering outstanding wear resistance and torque durability, making it ideal for both daily driving and heavy-load conditions.

This gear features a helical tooth profile, which reduces operational noise and enhances contact area for better power transmission efficiency. The outer ring is equipped with dog teeth, allowing accurate engagement with the synchronizer ring for fast and smooth shifting performance.

The AX15-21 is fully compatible with OEM specifications and can be directly installed in vehicles equipped with the AX15 transmission, such as Jeep Wrangler, Cherokee, and Comanche. No modifications are required, making it an excellent choice for replacement or perform

Specification

Gear Type : Helical Gear

Tooth Count : 40/33T

Material : SAE8620 or SAE4320H

Heat Treatment : HRC58-62

Surface Finish : Precision ground or hobbed gear teeth for improved meshing accuracy

Weight : Approx. 0.9 – 1.2 kg (subject to actual production)

Mounting Position : 2nd gear on the main shaft

Compatible Vehicle Models :

• Jeep Cherokee XJ (1989 – 1999)

• Jeep Wrangler YJ (1989 – 1995)

• Jeep Wrangler TJ (1997 – 1999)

• Jeep Comanche MJ (1989 – 1992)

• Jeep Grand Cherokee ZJ (1993 – 1995, limited manual models)

• Toyota : Some models equipped with similar Aisin-designed transmissions
(interchangeability not guaranteed – verify before use)