M32 Gearbox 3rd Gear Gen 3 Vauxhall 2016 Onwards 55580390

M32 Gearbox 3rd Gear (59T) – Generation 3, Vauxhall 2016 Onwards (55580390)

This is the 3rd gear (59 teeth) for the Generation 3 M32 6-speed manual gearbox, on the output-shaft side (fitment location 22 on the gearbox diagram). It is the later Gen 3 tooth design introduced from 2016.

Important – generation fitment: This gear fits the Gen 3 M32 (2016 onwards) only. It will not fit the earlier Gen 1 / 2 M32 gearboxes, which use a different gear design.

Fits transmission: M32 Generation 3 6-speed manual gearbox (2016 onward)

Teeth: 59T  ·  Position: 3rd gear, output-shaft side

OE / part number: 55580390

Vehicle Compatibility

Fitted to Vauxhall, Opel, Fiat, Alfa Romeo, Chevrolet and Saab models equipped with the post-2016 Generation 3 M32 6-speed gearbox. As many of these models were also built earlier with the Gen 1 / 2 box, please confirm your gearbox generation before ordering. If you are unsure, send us your UK registration number or VIN and we will check the correct part for you.

FAQs

Will this fit my M32 gearbox?

Only the Generation 3 M32 (2016 onwards). It will not fit Gen 1 or Gen 2 boxes — the gear design is different.

How many teeth does it have?

59 teeth. It sits on the output-shaft side as the 3rd gear.

How do I know if I have a Gen 3 M32?

Gen 3 boxes were fitted from 2016 onward. If you are not sure, send us your registration or VIN and we will confirm.

Is this a genuine part?

Yes — this is a genuine OE-specification M32 Gen 3 3rd gear.

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: ET2397