Polaris XLT Brake Bulb Size

The Polaris XLT brake utilizes bulb size 921 or 90 depending on the specific version of the snowmobile. Data for the provided components covers the range from 1993 to 1997.

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
1994-1997	921
1992-1993	90

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 13W.	90

Other Locations

Additional Notes

The 921 bulb is an ANSI-standard wedge-type unit in the T15 form factor, rated at 12 volts and 16 watts. It is the brake bulb specified for the Polaris XLT across the 1994-1997 model years.
The 90 bulb is an ANSI-standard single-filament unit with a BA15s bayonet base, rated at 12 volts and 13 watts. It is specified for the 1992-1993 model years.
A BA15s bayonet base, as found on the 90 bulb, uses a single locating pin on the base collar to seat and lock the bulb into its socket. This differs from the wedge-type seating mechanism of the 921, meaning the two bulb types are not interchangeable.
The 921 and 90 bulbs share the same 12-volt operating voltage, but the 921 draws 16 watts while the 90 draws 13 watts. Substituting one for the other would alter the wattage load on the circuit.
Both bulb types conform to ANSI standards applicable in the United States and Canada, indicating standardized electrical and physical tolerances within those markets.