Ski-Doo MX Z 440 LC X headlight bulb size specifications indicate 9003 bulbs for both high and low beam applications. The replacement chart covers 1999 to 2000 production years with corresponding bulb size data.
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, meaning a single unit contains two separate filaments to serve both high and low beam functions rather than requiring two distinct bulbs.
The 9003 operates on a 12-volt electrical system and draws 60 watts on the high beam filament and 55 watts on the low beam filament.
The P43t base is the physical connector type of the 9003 bulb, referring to a bayonet-style base with a 43mm flange used to seat and lock the bulb into its housing.
The 9003 designation follows the ANSI standard as used in the United States and Canada, which defines the bulb's electrical and optical output requirements.
The Ski-Doo MX Z 440 LC X uses the 9003 bulb for both the high beam and low beam headlight positions across the 1999-2000 model years.
Because the same bulb type fills both the high beam and low beam positions, the two functions are housed within a single bulb unit rather than separate assemblies.
The 9003 is functionally equivalent to the H4 bulb type used under European ECE standards, though the two designations reflect different regulatory frameworks and may carry minor output variations.