Pinion Z: 18-76 / M40 Gearbox - 95100080

M40 Gearbox Pinion Z:18-76 – OE Ref 55207885 / 95100080

Replacement pinion with tooth combination Z:18–76 for the PSA M40 manual gearbox. OE part numbers include 55207885 and 3103.R4. Dimensioned PU40130. Used across Citroen, Peugeot, and Fiat platforms equipped with the M40 transaxle.

Part details:

• Tooth combination: Z:18 – 76
• Gearbox: M40
• Dimensions: PU40130
• OE References:

• Citroen / Peugeot / Fiat: 55207885, 3103.R4

What is the M40 gearbox?

The M40 is a front-wheel-drive manual transaxle from the PSA Group (Peugeot/Citroen) used in a range of compact and mid-size vehicles. It shares architectural similarities with other PSA manual gearboxes and is known for good durability in standard road use.

Do I need the crown wheel as well as the pinion?

In most rebuild scenarios, yes — the crown wheel and pinion should be replaced as a matched pair to ensure correct contact pattern and avoid rapid wear. Contact us to confirm availability of the matching crown wheel for the M40.

What are the symptoms of pinion wear?

Symptoms include audible whining or growling from the differential area that varies with vehicle speed, vibration through the drivetrain under load, or visible tooth damage found during a gearbox strip-down.

How do I confirm the correct pinion for my vehicle?

Send us your vehicle VIN or the gearbox build plate reference and we can confirm the correct part. Different final drive ratios are used across M40 applications.

Can Eco Torque supply other M40 and MG5T gearbox parts?

Yes — we hold a range of PSA manual gearbox components. Contact us with your specific requirements.

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: ET2770