Polaris 500 RMK Brake Bulb Size

The Polaris 500 RMK brake utilizes a 921 bulb size for the specific lighting component required for operation. Data for the specified equipment covers the range from 1997 through 2002.

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
1997-2002	921

Bulb Specifications

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

Other Locations

Additional Notes

The Polaris 500 RMK uses the 921 bulb across all listed model years, spanning 1997-2002.
The 921 is a wedge-type bulb, classified under the T15 designation, which refers to its tubular glass envelope measuring 15 eighths of an inch in width.
Wedge bulbs are held in place by tension from the socket itself rather than by a bayonet or screw base, meaning no separate locking mechanism is involved in the fitment.
The 921 operates at 12 volts and draws 16 watts, placing it in the range typical of single-filament brake and tail light applications.
The 921 conforms to ANSI standards recognized in both the United States and Canada, indicating a standardized specification for electrical and photometric performance.
Because the 921 is a single-filament bulb, it serves a dedicated function rather than combining brake and running light duties within one unit.
The T15 wedge form factor is shared by several bulb numbers, and substitution with a physically similar but electrically different bulb risks mismatched wattage or socket incompatibility.