Piaggio 154792 Carburetor Gasket Set – Vespa PX 125, 150 and 200 (1977-2017)

The Piaggio 154792 carburetor gasket set is the original kit for overhauling the Dell'Orto SI carburetor, factory-fitted on Vespa PX 125, 150, and 200 models. It includes flat gaskets, O-rings, and sealing washers that should be replaced every time the carburetor is opened and cleaned. These parts restore the fuel circuit's seal and ensure a smooth idle. Product code 154792.

✓ Strengths

• Original Piaggio kit – This is the set specified in the official spare parts catalog, not an aftermarket assortment put together separately.
• All in one package – Includes flat gaskets for the body and float bowl, O-rings, and sealing washers in various sizes.
• Covers the entire PX range – The same set is suitable for 125, 150, and 200 models, from the first PX E series to the latest 2T E3 models from 2017.
• Correct materials in the right places – Rubber elements for sealing rings and metal washers for screw connections.
• The often-forgotten part – Reassembling a carburetor with old gaskets is the most common cause of leaks and unstable idle.

Technical specifications

Vehicle compatibility

The list is taken from the official Piaggio spare parts catalog (B2B area). If you have any doubts, send us your Vespa's chassis number, and we will verify the correct code for you.

Who it's perfect for

It's the kit for anyone working on their PX's carburetor: those who use it daily and want to fix an unstable idle, those finishing a restoration and don't want to reassemble hardened old gaskets, and workshops that perform carburetor cleaning and tuning as routine work. It's inexpensive and takes only a few minutes to install, but it determines whether the carburetor truly seals again.

Frequently asked questions

Which Vespas does the 154792 gasket set fit?
The 154792 series covers Vespa PX models in three displacements: PX 125, PX 150, and PX 200. It is suitable for both the historic PX E series and the PX 125 and 150 2T E3 models produced from 2011 to 2017, as well as the PX 125 30 Anni from 2007-2008. The table above shows the exact models and years.

What exactly does the kit contain?
It contains the flat carburetor gaskets, O-rings, and sealing washers in the various specified sizes. It does not contain jets, float needle, float, or other mechanical parts: it is a kit of seals only, designed for expertly reassembling a carburetor that has been opened and cleaned.

When should carburetor gaskets be replaced?
Every time the carburetor is disassembled for cleaning, and whenever fuel leaks from the float bowl, unstable idle, or cold starting difficulties occur. Gaskets harden with time and modern gasoline: reassembling with used gaskets is the most common cause of leaks.

Is it also suitable for the PX 200 carburetor?
Yes. The official Piaggio spare parts catalog indicates the same 154792 series for the PX 200 E, in addition to the 125 and 150 models. This is the advantage of this code: a single series covers the entire PX family, without having to distinguish the displacement when ordering.

Is it an original spare part or an equivalent?
It is the original series from the Piaggio Group, with factory code 154792. It is not an aftermarket assortment: measurements and materials are those specified by the manufacturer, so each gasket fits perfectly without adjustments or leftover parts.

How do I know if it's the right one for my Vespa?
Check the model and year in the compatibility table. If your PX is not listed, if it was imported, or if the carburetor has been replaced over time, send us your chassis number: we will verify the code in the official Piaggio catalog and confirm if this is the correct series for you.