F40 Gearbox Reverse Gear Synchroniser - 159 Brera / 939 Spider 55351580

F40 Transmission Reverse Gear Synchroniser

Alfa Romeo 159 / Brera / 939 Spider – 55351580

A brand new and genuine reverse gear synchroniser for the F40 6-speed manual gearbox as fitted to the Alfa Romeo 159, Brera and 939 Spider 3.2 V6. This replacement synchroniser restores smooth reverse gear engagement.

Part Numbers

55351580 (Alfa Romeo OE)

Vehicle Compatibility

Alfa Romeo 159 3.2 V6
Alfa Romeo Brera 3.2 V6
Alfa Romeo 939 Spider 3.2 V6

Fits Gearbox

F40 6-Speed Manual Gearbox

What is a reverse gear synchroniser?

A synchroniser (or synchromesh) matches the rotational speed of a gear to the gearbox shaft before engagement, enabling smooth, crunch-free gear selection. The reverse gear synchroniser serves the same function for reverse gear.

What are the symptoms of a worn reverse gear synchroniser?

Common symptoms include a crunching or grinding noise when selecting reverse, difficulty engaging reverse gear, or reverse gear jumping out while driving. These are signs the synchroniser ring has worn and needs replacement.

Is this a genuine Alfa Romeo part?

Yes — part number 55351580 is a genuine Alfa Romeo factory part, ensuring correct fitment and OE specification performance.

Does this synchroniser fit other F40 gearbox applications?

The F40 gearbox is used across multiple Alfa Romeo, Opel/Vauxhall and Saab models, but not all use the same synchroniser. Contact us with your vehicle details to confirm compatibility before ordering.

How is this synchroniser fitted?

Fitting a reverse gear synchroniser requires gearbox removal and disassembly. This should be carried out by a qualified gearbox specialist. Eco Torque also offers gearbox rebuild and repair services.

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: ET3488