Ducati ST2 License Plate Bulb Size

The Ducati ST2 license plate bulb uses a 12961 size specification for this motorcycle model. The replacement chart covers vehicle production spanning 1997 to 2003.

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
1997-2003	12961

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

Other Locations

Additional Notes

The Ducati ST2 uses the 12961 bulb for the license plate position across all listed model years, spanning 1997-2003.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor.
T10 refers to the bulb's tubular shape, with the number indicating a width of 10 millimeters.
The 12961 uses a W2.1x9.5d wedge base, which is a pinless base type that relies on the wedge-shaped glass envelope to make contact within the socket.
The W2.1x9.5d designation specifies a contact width of 2.1mm and a pin spacing of 9.5mm, which determines physical socket compatibility.
The bulb operates at 12 volts and 5 watts, consistent with standard low-current auxiliary lighting circuits found on motorcycles.
The T10 wedge format is a widely used miniature bulb type, meaning aftermarket and OEM equivalents from other manufacturers may share the same base and electrical ratings while carrying different part numbers.
When substituting the 12961, the W2.1x9.5d base type must match the socket on the Ducati ST2, as physically similar wedge bulbs exist with differing base widths that are not interchangeable.