Is this a main shaft gear or a countershaft gear?

This specific part is the 3rd gear assembly for the main shaft, but please verify your application.

Does this gear come with the matching synchro hub?

No, this is just the gear itself; the synchronizer sleeve and hub are sold separately.

What is the tooth count on this gear?

The tooth count is precisely matched to the OEM ratio for the 3 Series transmission.

Can this gear be used for a close-ratio transmission build?

Yes, if it is a performance gear set, but this is a standard OEM replacement ratio.

How do I identify if this is the correct gear for my 3 Series?

You must match the tooth count and the internal spline pattern to your existing gear.

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Part

Gear Assembly

Compatible with BMW 3 Series

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Product Description

Replace worn or broken gears with this precision-cut gear assembly for your 3 Series transmission. Whether a specific speed gear or a countershaft, this component matches OEM tolerances. Directly compatible with the existing bearings and shafts in your 3 Series gearbox. Restore the integrity of your 3 Series transmission with this machined gear assembly.

Key Features

CNC-hobbed gear teeth for perfect meshing
Case-hardened surface for wear resistance
Tough core material to resist shock loads
Precision-ground bore for accurate shaft fit
Individual gear component for specific positions

Frequently Asked Questions

Common questions about this product