Triumph Rocket III Classic License Plate Bulb Size

The Triumph Rocket III Classic uses a 12961 bulb size for the license plate light assembly. The replacement chart covers vehicle production from 2006 to 2009 with corresponding bulb 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
2006-2009	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 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor with a W2.1x9.5d base, rated at 12 volts and 5 watts.
The T10 designation refers to the bulb's tubular shape, while the W2.1x9.5d base describes a wedge-type connection where the electrical contacts are formed by the glass envelope itself rather than a separate metal base.
The Triumph Rocket III Classic uses the 12961 bulb for the license plate position across the 2006-2009 model years.
The W2.1x9.5d wedge base is a standardized fitting, meaning functionally equivalent T10 bulbs from other manufacturers sharing that base type are generally interchangeable with the 12961, provided the 12V and 5W ratings are matched.