Piaggio Typhoon License Plate Bulb Size

The Piaggio Typhoon license plate bulb uses a 12961 or DE3423 size designation for this scooter model. The replacement chart covers vehicle production spanning 2005 to 2019 with corresponding bulb size specifications.

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

Bulb Size by Year Range

Years	Bulb Size
2019	12961
2011-2017	12961
2007	DE3423
2005	DE3423

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V.	DE3423

Other Locations

Additional Notes

The Piaggio Typhoon uses two distinct bulb types across its model years for the license plate position: the 12961 and the DE3423.
The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W.
The T10 wedge base relies on friction fit contacts built into the plastic wedge, requiring no separate socket pins or end caps to make an electrical connection.
The DE3423 is an ANSI-standard festoon bulb with a 41mm length and end-cap contacts, rated at 12V, and is recognized across US and Canadian automotive markets.
Festoon bulbs make contact through metal caps at each end of the tube, a mounting style physically incompatible with the wedge socket used by the 12961.
The 12961 T10 wedge and the DE3423 festoon are not interchangeable due to their different base types and socket configurations.
The Piaggio Typhoon (2011-2019) takes the 12961 bulb in the license plate position, with 2018 being the only year in that span not represented in the specifications.
The 2005 and 2007 Piaggio Typhoon models use the DE3423 festoon bulb for the license plate position.
The shift from the DE3423 festoon format to the 12961 T10 wedge format occurred between the 2007 and 2011 model years, indicating a socket design change in the license plate housing during that period.
The W2.1x9.5d base designation on the 12961 refers to a standardized IEC base code, where 2.1 denotes the wire contact width in millimeters and 9.5 denotes the wedge insertion depth in millimeters.