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Description

This 3rd / 4th Gear Synchro Hub is designed for the Ford Type 9 (T9) 5-speed manual transmission. Made from high-strength carburizing alloy steel (SAE 8620 / SAE 4320H) and heat-treated for surface hardness up to HRC 58–62, it offers excellent wear resistance and durability.

The internal precision splines ensure a secure fit with the main shaft, while the external engagement teeth are hobbed for smooth synchro ring engagement and improved shift feel. Three keyway slots support synchro keys and springs, ensuring consistent alignment and reliable shifting.

Specification

Material : SAE 8620 or SAE 4320H

Heat Treatment : Carburized and quenched

Tooth Count : 30/23T

Gear Surface Hardness : HRC 58–62

Internal Structure : Precision spline design for main shaft fitment

External Structure : Dog teeth for engagement with synchronizer ring

Manufacturing Process : Precision gear hobbing + CNC machining

Vehicle Compatibility :
This product is compatible with rear-wheel-drive vehicles equipped with the Ford Type 9 5-speed manual transmission. Common applications include Ford Sierra, Capri, and Escort. Suitable for use in original transmission repair, restoration, or performance upgrades. Please confirm compatibility based on your vehicle’s year and gearbox specification.