Piaggio 0947431 Cork Clutch Drive Plate – Vespa PX, PE, Cosa and 125-150

The Piaggio 0947431 clutch drive plate is the cork-lined plate for geared Vespa clutches: the one with a cork ring and six external tabs that engage with the clutch drum. Official catalog name: "K Drive Plate." It's the part that transmits torque when you release the lever, and the first to wear out on a slipping or "grabbing" clutch. Product code 0947431.

✓ Strengths

• Original cork lining – this is the material Piaggio fits as standard on these clutches: progressive and smooth engagement, without the abruptness of synthetic materials.
• Original spare part, not an aftermarket one – thickness and diameter match the catalog specifications, so the clutch pack remains at the correct dimension and the lever maintains its correct travel.
• Covers half a century of Vespa models – from 125 and 150 models of the 50s and 60s to PX, PE, and Cosa models.
• Overhaul spare part – replaced with every clutch opening, along with the plain plates and springs.
• Restoration part – on a vintage Vespa, original cork restores the clutch disengagement feel of a new bike.

Technical features

Vehicle compatibility

⚠️ Piaggio's B2B catalog does not list vehicles for this code. The table below is compiled from the SIP-Scootershop technical catalog and specialized Vespa retailers, not from the B2B: before ordering, please check your frame number or contact us.

Order together

• A second 0947431 – the clutch uses two identical ones.
• 0947801 – the third lined plate in the set, with a different thickness.
• Plain plates, springs, and pressure plate – the rest of the clutch pack, to be evaluated when the clutch is open.

Who it's perfect for

It's the replacement part for anyone with a geared Vespa — a PX, PE, Cosa, or a vintage 125/150 — who experiences a clutch slipping uphill, not disengaging properly, or starting with jerks. Opening the crankcase and installing original cork is the classic intervention for serious restoration and maintenance: it's inexpensive, takes half a day, and restores the bike's smooth clutch release feel it had when new. It's also a part every Vesparider keeps in stock in their workshop.

Frequently Asked Questions

How many plates do I need to recondition the clutch?
This listing is for one plate. The complete clutch uses three lined plates: according to specialized retailers, these are two 0947431s and one 0947801. So for a complete overhaul, you need two of this item plus one of the other code.

Is it suitable for my Vespa PX 200?
No. The 200 uses a different plate, code 0593881. The 0947431 is suitable for PX 80, 125 and 150, PE, PXE Arcobaleno, Cosa 125, and vintage Vespa 125 and 150 models. If in doubt, send us your frame number and we will verify it before shipping.

Why cork and not a modern material?
Cork is the lining Piaggio fits as standard on these clutches: it operates in an oil bath and provides progressive engagement, without the abrupt disengagement of synthetic racing materials. For a street or restored Vespa, it is the correct choice.

How do I know if the clutch needs reconditioning?
Signs include the clutch slipping uphill or during acceleration (the engine revs up but the bike doesn't accelerate), abrupt or incomplete disengagement, and difficulty engaging gears from a standstill. When the clutch is open, worn cork plates can be identified by reduced thickness and a shiny surface.