The Ski-Doo MX Z 500 high beam and low beam headlight bulb size is 9003 for both applications. Replacement bulb specifications in the chart cover 2000 through 2009 production years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ski-Doo MX Z 500 uses the 9003 bulb size for both high beam and low beam headlights across the 2000-2009 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments, one rated at 60W for the high beam and one at 55W for the low beam.
The 9003 bulb operates on a 12V electrical system and uses a P43t base, which is a bayonet-style mount with a 43mm collar.
The 9003 designation follows the ANSI standard recognized in the United States and Canada, making it a regionally standardized specification rather than a proprietary one.
Because the same 9003 bulb serves both the high beam and low beam positions, the MX Z 500 headlight assembly relies on a single bulb per housing to produce both lighting functions rather than separate bulbs for each beam.
The 9003 bulb is functionally equivalent to the H4 bulb type used under international IEC standards, though the two designations reflect different regional classification systems and fitment confirmation is advisable before substitution.