M32 Gearbox 2nd Gear 39T 55580383 Vauxhall Alfa Romeo Fiat 2016 Onwards Gen 3

M32 Gearbox Gen 3 Second Gear 39 Tooth – Vauxhall / Alfa Romeo / Fiat

This is an M32 6-speed gearbox second gear with 39 teeth, Vauxhall OE part number 55580383. It is the generation 3 M32 variant of the second gear with the lowest tooth count in the Gen 3 second gear range. Not compatible with M32 Gen 1 or Gen 2 gearboxes. Fits M32 Gen 3 configurations from approximately 2016 onwards only.

OEM Reference: 55580383
Tooth Count: 39 teeth
Application: Second gear (2nd)
Compatibility: M32 Generation 3 (2016 onwards) ONLY

Fits: Vauxhall, Alfa Romeo, Fiat, Opel and SAAB models fitted with the M32 Gen 3 6-speed manual gearbox from approximately 2016 onwards. Confirm your OE part number or VIN before ordering.

How do I know I need the 39-tooth version (55580383) rather than 40T or 41T?

The correct tooth count depends on the exact M32 Gen 3 variant fitted to your vehicle. They correspond to different final drive ratio configurations. Always match your original part number using your VIN or by consulting the exploded parts diagram for your gearbox code.

What symptoms suggest my second gear needs replacing?

Difficulty selecting 2nd gear, crunching on engagement, and the gear jumping out under acceleration are all indicative of synchromesh or gear tooth damage in second gear.

Can Gen 3 gears be identified visually?

Gen 3 gears are often visually similar to Gen 1 and Gen 2 parts. The safest identification method is matching the OE part number stamped on the gear or obtained from a VIN lookup.

Is this a genuine OEM part?

Yes. Part number 55580383 is a genuine Vauxhall OEM component manufactured to original equipment specification.

Do you offer M32 gearbox rebuild services?

Yes. Eco Torque specialises in M32 gearbox rebuilds. Contact us if you need advice on a full rebuild rather than a single gear replacement.

Why Choose Eco Torque?

As specialists in gearbox rebuilds and repairs, Eco Torque takes pride in offering genuine gearbox parts, high-quality aftermarket alternatives and competitive pricing.

Need Help Finding the Right Part?

If you are unsure whether this part is compatible with your vehicle, send us your UK registration number or VIN and we will help you find the correct part.

Reference Number: ET2359