Suzuki Motorcycle M109RZ Boulevard Limited License Plate Bulb Size

The Suzuki Motorcycle M109RZ Boulevard Limited license plate light requires a 12821 bulb size for the specific component. Data for the bulb size covers the range from 2007 to 2014.

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
2011-2014	12821
2007-2009	12821

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12821

Other Locations

Additional Notes

The 12821 is a Philips part number designating a miniature wedge bulb in the T10 form factor, operating at 12 volts and rated at 5 watts.
The T10 bulb uses a W2.1x9.5d base, a wedge-style base that relies on spring tension from the socket rather than a locking pin or bayonet mechanism to maintain contact.
At 5 watts, the 12821 is a low-output bulb suited to illumination tasks that require visibility rather than high brightness, such as license plate lighting.
The Suzuki Motorcycle M109RZ Boulevard Limited uses the 12821 bulb for the license plate position across the 2007-2009 and 2011-2014 model years.
The W2.1x9.5d base designation is standardized, meaning aftermarket T10 wedge bulbs sharing that base type are generally interchangeable with the 12821 in compatible sockets.
The T10 designation refers to the bulb's tubular shape with a nominal width of 10 millimeters, a common sizing standard used across many vehicle lighting positions globally.