The Polaris 440 Pro X high beam and low beam headlight bulbs both utilize a 9003 bulb size. The replacement chart covers vehicle production years spanning 2001 to 2003.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Polaris 440 Pro X uses the 9003 bulb across both its high beam and low beam headlight positions for the 2001-2003 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments: one rated at 60W for high beam output and one at 55W for low beam output.
Because the 9003 serves both headlight functions in the Polaris 440 Pro X, the high beam and low beam positions accept the same physical bulb rather than requiring separate part numbers.
The 9003 operates on a 12V electrical system and uses a P43t base, which is a bayonet-style mount with a 43mm flange.
The 9003 designation follows the ANSI standard recognized in both the United States and Canada, distinguishing it from the functionally similar H4 bulb used under European ECE standards, which shares the same dual-filament halogen design but carries a different certification marking.
The P43t base is not universally interchangeable with other common base types such as the P14.5s or BA15s, so substitution requires confirmation that the replacement bulb carries the same base designation.