What is a synchro hub assembly?

The synchro hub is splined to the shaft and carries the sliding sleeve. It works with the synchromesh rings to allow smooth, crunch-free gear changes. Damage or wear here causes gear selection problems in 3rd or 4th.

Does this include the sliding sleeve?

Yes, this is a complete assembly including hub and sliding sleeve for the 3rd/4th selector.

Is this compatible with my gearbox?

This part is for Gen 1 M32 only. If you are unsure of your gearbox generation, please send us your VIN and we will confirm.

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|SKU: ET2345

M32 Gearbox 3rd Gear 55T 55580391 Gen 3 Vauxhall 2016 Onwards

Name: M32 Gearbox 3rd Gear 55T 55580391 Gen 3 Vauxhall 2016 Onwards
Brand: Vauxhall
SKU: ET2345
Price: 59.99 GBP
Availability: InStock

£59.99 GBP (Inc VAT)

Ex VAT: £49.99

Tax included Shipping calculated at checkout.

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Delivery and Shipping

UK Shipping

1-2 day delivery via express courier when ordered before 14:00pm*

International Shipping

3-5 Business Days*

Specifications

Manual

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M32 Transmission 3rd Gear 55T 55580391 Gen 3 Vauxhall 2016 Onwards

This assembly is for Generation 3 M32 gearboxes only.

Part Number

55580391

Fitment Diagram

Eco Torque M32 Gearbox Diagram

Vehicle Compatibility

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

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 sourcing 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.