The Polaris 900 RMK uses 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 2005 to 2006 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9003 is a dual-filament halogen bulb operating at 12 volts, with a high beam output of 60 watts and a low beam output of 55 watts. It uses a P43t base, which is a bayonet-style fitting common to this bulb family.
Because the 9003 carries both filaments within a single bulb, it serves both the high beam and low beam functions simultaneously. This means one bulb type covers both lighting positions on the Polaris 900 RMK for the 2005-2006 model years.
The 9003 designation follows the ANSI standard used in the United States and Canada. This standard defines the bulb's electrical and physical characteristics, ensuring consistent performance across compliant products.
The P43t base is specific to the 9003 and its close relatives. Bulbs with different base types are not physically compatible with sockets designed for the P43t, making base type a critical factor in fitment.
The 9003 and H4 bulbs share the same dual-filament halogen design and P43t base, and are often considered interchangeable. However, the 9003 follows ANSI standards while the H4 follows ECE standards, and minor differences in filament positioning between the two can affect beam pattern alignment in some housings.