Ski-Doo MX Z 440 X high beam and low beam headlight bulbs both use 9003 size. The replacement chart covers 2001 to 2007 production years with bulb specifications.
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 440 X uses the 9003 bulb for both high beam and low beam headlight positions across the 2001-2007 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments to serve both high and low beam functions within one housing.
The bulb operates at 12 volts, with the high beam filament rated at 60 watts and the low beam filament rated at 55 watts.
The 9003 uses a P43t base, which is a bayonet-style mount with a 43mm flange. A bulb with a different base type is not a direct physical fit regardless of wattage or voltage compatibility.
The 9003 designation follows the ANSI standard used in the United States and Canada. It is functionally equivalent to the European H4 bulb, though the two designations originate from different standardization bodies.
Because the same 9003 bulb is specified for both the high beam and low beam positions, only one bulb type is required per headlight assembly on the MX Z 440 X.