The Polaris 900 SwitchBack headlight bulb uses a 9003 size for both high beam and low beam applications. The replacement chart covers vehicle production years 2005 to 2006 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 the sole bulb type specified across all listed positions and years for the Polaris 900 SwitchBack, appearing in both the high beam and low beam headlight positions for the 2005-2006 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments: one rated at 60 watts for high beam output and one rated at 55 watts for low beam output.
The bulb operates on a 12-volt electrical system, which is standard for automotive and powersports applications of this type.
The 9003 uses a P43t base, a bayonet-style mount with a 43mm collar, which physically determines fitment compatibility at the socket level.
The 9003 designation follows the ANSI standard as used in the United States and Canada, and it is functionally equivalent to the European H4 bulb, though packaging and labeling may differ by market.
Because the same 9003 bulb serves both the high beam and low beam positions, the two circuits draw from the same physical unit rather than from separate single-filament bulbs installed in distinct housings.