Ducati Monster 750 License Plate Bulb Size

The Ducati Monster 750 license plate bulb uses a DE3423 or 12961 bulb size specification. The replacement chart covers vehicle production spanning 1997 to 2011.

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
2010-2011	DE3423
1997-2002	12961

Bulb Specifications

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

Other Locations

Additional Notes

The Ducati Monster 750 license plate bulb specifications cover model years 1997-2002 and 2010-2011, with two distinct bulb types used across those years.
The DE3423 is a festoon-type bulb conforming to ANSI standards recognized in the United States and Canada, with a 41mm length and end-cap contacts operating at 12 volts.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, fitted with a W2.1x9.5d base and rated at 12 volts and 5 watts.
The Ducati Monster 750 uses the DE3423 festoon bulb for the 2010-2011 model years.
The 12961 wedge bulb applies to the 1997-2002 model years of the Monster 750.
The festoon and wedge bulb types are not interchangeable, as they differ in physical form, base type, and contact configuration, making year-specific fitment verification necessary before replacement.
End-cap contacts on the DE3423 festoon bulb make electrical contact at both ends of the cylindrical housing, a design distinct from the wedge base of the 12961, which relies on side contacts formed by the glass envelope itself.
The W2.1x9.5d base designation on the 12961 refers to a standardized wedge base with a 9.5mm pin spacing, a common specification in miniature automotive lighting applications.