Piaggio 641743 Horn Button – Vespa GTS, LX and S, MP3, Beverly, Liberty and Aprilia SR

The Piaggio 641743 horn button is the black rocker switch with the white horn symbol that plugs into the left handlebar switch. It is the spare part that restores the horn function on Vespa GTS, LX, S and GTV, Piaggio MP3, Beverly, Liberty and X7, Gilera Fuoco and Aprilia SR. It can be removed and reassembled without cutting any wires. Product code 641743.

✓ Strengths

• Original Piaggio Group code 641743 – the button listed in the catalog, with the same fitting and screen printing.
• One code for four brands – Vespa, Piaggio, Gilera and Aprilia, from 50 cc up to 500 cc.
• Self-replaceable – it slips out of the block and re-engages: no cutting, no soldering.
• Restores the horn to working order – a working horn is mandatory for inspection.
• White screen-printed horn symbol, like the original factory-fitted one.

Technical specifications

Vehicle compatibility

The list is taken from the official Piaggio and Aprilia spare parts catalog (B2B area), family by family. If your vehicle is not in the table, or if you have a special configuration, send us the VIN and we will verify the correct code before you order.

Perfect for

It is the spare part for those who press the horn and hear nothing, or for those whose button is sunken into the housing because the internal spring has failed. On handlebars exposed to rain, the button is one of the first contacts to oxidize, and replacing it costs a fraction of the complete switch. It is also the part needed by those who need to pass their inspection, because a working horn is mandatory, and for those who are tidying up an old Vespa GTS or MP3 before reselling it.

Frequently asked questions

Which vehicles does button 641743 fit?
Vespa GTS, GTS Super, GTV, LX, LXV, LT and S, Piaggio MP3 of all displacements, Beverly and BV, Liberty iGet, X7 and Typhoon 50, Gilera Fuoco 500 and Aprilia SR, SR Motard and SXR. The table above shows the exact families and years taken from the official catalog.

Where is it located exactly?
On the left handlebar switch, under the rear brake lever, along with the light switch and turn signals. It is the button with the horn symbol: it slides out of its housing and the new one snaps into place.

Is the complete switch included?
No. Only the button is supplied. If the switch body or wiring is broken, different spare parts are needed: write us the VIN and we will tell you the correct code.

The horn doesn't sound: is it definitely the button?
Not necessarily. The button is the last link in the chain: first check the fuse, ground, and the horn itself. If pressing the button doesn't even produce a mechanical click, or if the button remains sunken, then it is the problem.

Can I change it myself?
Yes, and it is one of the simplest operations: work with the ignition off, carefully pry the old button out of its housing, and snap in the new one. No cutting or soldering of wires is needed.

Will I pass the inspection with a broken horn?
No. The horn must be working: it is one of the mandatory checks. Replacing the button is the most economical way to comply when the rest of the system is healthy.