Polaris 500 XC Brake Bulb Size

The Polaris 500 XC brake utilizes a 921 bulb size for the lighting components located at the rear of the vehicle. Data for the specified equipment covers the range from 1999 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
1999-2003	921

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921

Other Locations

Additional Notes

The 921 bulb is the sole brake bulb type listed for the Polaris 500 XC across the 1999-2003 model years.
The 921 bulb follows the ANSI standard, which is the recognized specification system used in the United States and Canada for automotive lighting components.
This bulb uses a wedge-style base, classified under the T15 envelope designation. A wedge base requires no separate metal socket pins, as the glass envelope itself is pinched at the bottom to form the electrical contacts.
The 921 operates at 12 volts and draws 16 watts, placing it in the range typical of single-filament automotive signal and brake lighting applications.
Because the 921 uses a wedge base rather than a bayonet or screw base, substitution with bulbs of differing base types is not compatible, even if voltage and wattage ratings are similar.