Polaris 700 RMK Brake Bulb Size

The Polaris 700 RMK brake light utilizes 1157 and 921 bulb sizes depending on the specific version of the machine. Data for the components covers the range from 1997 through 2005.

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
2007-2010	1157
2000-2005	1157
1997-1999	921

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921

Other Locations

Additional Notes

The Polaris 700 RMK uses two distinct brake bulb types across its model years: the 1157 and the 921, both of which conform to ANSI standards recognized in the United States and Canada.
The 1157 is a dual-filament bulb fitted with a BAY15d bayonet base, rated at 12V with a wattage split of 21W and 5W across its two filaments, allowing it to serve both high-intensity and low-intensity functions within a single housing.
The 921 is a single-filament wedge-type bulb in a T15 form factor, rated at 12V and 16W, and it uses no base pins, relying instead on its wedge-shaped glass envelope to make contact within the socket.
The BAY15d bayonet base of the 1157 features offset pins that prevent incorrect insertion, a design characteristic that distinguishes it from single-filament bayonet bulbs with symmetrical pin placement.
The 700 RMK (2000-2010) uses the 1157 bulb for its brake light, while the 1997-1999 model years use the 921 bulb instead.
The 1157 and 921 are not interchangeable. The bayonet base of the 1157 and the wedge base of the 921 require physically different socket types, and their filament configurations also differ.