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Description

The WT297-11A is a 3rd speed gear specifically designed for the Muncie M22 4-speed transmission, featuring a 27-tooth helical gear configuration. It is compatible with M22-series vehicles manufactured between 1963 and 1974. This gear is typically made from high-strength carburized alloy steel such as SAE 8620, and undergoes a carburizing and quenching heat treatment process to ensure superior wear resistance and high torque capacity. Engineered for close-ratio setups, the WT297-11A is an essential replacement and upgrade component for restoring or enhancing the performance of classic American manual transmissions.

Specification

Tooth Count: 36/27T

Gear Type: Helical Gear

Material: SAE 8620 (or equivalent high-strength alloy steel)

Heat Treatment: Carburized & Quenched

Surface Hardness: HRC 58–62

Spline Type: Internal spline for M22 mainshaft only

Weight: Approx. 1.5–1.6 kg