Piaggio Fly 50 Headlight Bulb Size

The Piaggio Fly 50 high beam and low beam headlight bulbs utilize a 9003 or 6235B bulb size. The replacement chart covers vehicle production spanning 2007 to 2019.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

High Beam Headlight

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2019	9003	H4	Check Price
2013-2017	9003	H4	Check Price
2007-2012	6235B	6235B	Check Price

Low Beam Headlight

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2019	9003	H4	Check Price
2013-2017	9003	H4	Check Price
2007-2012	6235B	6235B	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament halogen bulb with P43t base. 12V, 60W/55W.	9003	Check Price
ANSI standard (US & Canada). Festoon bulb, blue tinted glass, specialty application. 12V.	6235B	Check Price

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Additional Notes

The Piaggio Fly 50 uses two distinct bulb types across its headlight history: the 9003 for model years 2013-2019 and the 6235B for model years 2007-2012. Both types serve as the specified size for both high beam and low beam functions simultaneously, which reflects a single-bulb headlight design where one unit handles both lighting modes.
The 9003 is a dual-filament halogen bulb operating at 12 volts, with a rated output of 60 watts on high beam and 55 watts on low beam. It uses a P43t base and conforms to the ANSI standard applicable in the United States and Canada.
Because the 9003 carries two filaments within a single housing, it is able to fulfill both the high beam and low beam roles from one bulb position, which accounts for its identical specification across both sub-parts in the 2013-2019 model years.
The 6235B is a festoon-style bulb with blue tinted glass, rated at 12 volts, and classified as a specialty application type under the ANSI standard. Its festoon form factor differs structurally from the P43t-based 9003, making the two bulb types physically incompatible with each other.
The Piaggio Fly 50 (2013) marks the point at which the headlight specification transitions from the 6235B to the 9003. Substituting one type for the other outside its designated year range would not be consistent with the fitment data provided.
The 9003 bulb type is also widely cross-referenced as HB2 or H4 in international markets, though the 9003 designation specifically reflects the ANSI classification used in North America.
The 6235B festoon bulb, by contrast, is associated with specialty or niche lighting applications rather than mainstream headlight assemblies, which is consistent with its use in the earlier Fly 50 model years before the transition to the more common 9003 format.
No year within the specifications carries differing bulb sizes between the high beam and low beam positions, indicating that a single bulb type covers both functions for every listed model year.