M32 Gearbox 4th Gear 47T 39mm 55491399 Gen 3 Vauxhall 2016 Onwards

M32 Transmission 4th Gear (47T) Generation 3

Vauxhall / Opel 2016 Onwards — 55491399

Generation 3 M32 4th gear, 47 teeth, internal diameter 39mm — output shaft side.

This gear will not fit the earlier Generation 1 or Generation 2 M32 gearbox.

M32 Generation 3 (MF3 / MZ4 variant codes, 2016 onwards) only.

Part Number

55491399

Fitment location 24 on diagram

Vehicle Compatibility

Generation 3 M32 gearbox — Vauxhall / Opel / Alfa Romeo / Fiat / Chevrolet / Saab vehicles with M32 Gen 3 (2016 onwards).

Why Choose Eco Torque?

As M32 gearbox rebuild and repair specialists, Eco Torque was one of the first companies in the UK to offer M32 bearing and gear upgrades. We pride ourselves on mastering the repairs of the gearboxes we work on, supplying only parts we trust.

Browse Eco Torque's ever-evolving product range at competitive prices.

Need Help Finding the Right Part?

If you cannot find the items you need or are unsure if the part is compatible with your vehicle make and model, please send us your UK registration number or VIN Code and we will direct you to the right part.

Frequently Asked Questions

Q: How do I know if my gearbox is Gen 3?
A: Generation 3 M32 gearboxes are identified by variant codes MF3 or MZ4 and were fitted from 2016 onwards. If your vehicle was made before 2016, it is most likely Gen 1 or Gen 2.

Q: Will this gear fit my Gen 1 or Gen 2 M32?
A: No. The Gen 3 4th gear uses different tooth profiles and internal dimensions. Please order the correct generation for your gearbox.

Q: Is this an OEM or aftermarket part?
A: Eco Torque supplies genuine OE specification parts. The OE part number for this gear is 55491399.

Reference Number: ET2398