Suzuki Motorcycle LT-A500F QuadMaster Tail Light Bulb Size

The Suzuki Motorcycle LT-A500F QuadMaster tail light requires a 12821 bulb size for proper installation and function. Data for the specific component covers the range from 2000 to 2001.

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
2000-2001	12821

Bulb Specifications

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

Additional Notes

The Suzuki Motorcycle LT-A500F QuadMaster uses the 12821 bulb for its tail light across the 2000-2001 model years.
The 12821 is a Philips part number designating a miniature wedge-style bulb in the T10 form factor, which refers to the tubular glass envelope with a width of approximately 10 millimeters.
This bulb uses a W2.1x9.5d base, a wedge-type connector that relies on the glass envelope itself to make contact with the socket rather than a separate metal base or pins.
The electrical rating of the 12821 is 12 volts and 5 watts, placing it in the low-wattage range typical of auxiliary and signal lighting rather than primary illumination.
The T10 wedge format is a widely standardized size, meaning aftermarket equivalents from other manufacturers are generally available under different part numbers while sharing the same base type and electrical ratings.
Because fitment is confirmed only for the 2000-2001 model years of the LT-A500F QuadMaster, application of this bulb to other Suzuki models or years is not supported by these specifications.