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: 64.01 GBP
Availability: InStock

£64.01 GBP (Inc VAT)

Ex VAT: £53.34

Tax included Shipping calculated at checkout.

✓ In stock at our Arlesey workshop

Order before 2pm on a working day and this is picked and dispatched the same day by express courier, normally with you in 1–2 working days.

Collection from Arlesey also available — choose it at checkout.

Fitting service

Get it installed

Visit our workshop and have it fitted by our own transmission specialists.

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Delivery and Shipping

UK delivery — parts we hold in stock

Ordered before 2pm on a working day, these are dispatched the same day by express courier and normally arrive within 1–2 working days.

Parts supplied from our European supplier

A large part of our range is held by our supplier in Germany rather than on our own shelves. We order these in for you as soon as you place the order. They normally dispatch within 7–10 working days, and are then sent on by express courier like anything else. Nothing ships to you direct from Germany — it comes to our Arlesey workshop first, so you deal only with us for returns and warranty.

Collection from Arlesey

Click and collect is available on parts we physically hold. If an item has to come in from our supplier it cannot be collected, and checkout will tell you so before you pay.

International

3–5 working days once dispatched. Any customs charges or excise duties are the responsibility of the buyer.

View our Shipping Policy

*Delivery times are estimates and can be affected by factors outside our control.

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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.