The Ski-Doo Mach Z high beam and low beam headlight bulb size is 9003 for both applications. The replacement chart covers 1999 to 2007 production years 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 headlight positions for the Ski-Doo Mach Z, covering model years 1999-2003 and 2006-2007.
The 9003 is a dual-filament halogen bulb, meaning a single unit contains separate filaments for both high and low beam functions, which accounts for its use in both headlight positions.
The bulb 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 9003 uses a P43t base, a bayonet-style mount with a 43mm collar, which physically determines housing compatibility and is not interchangeable with other base types.
The 9003 designation follows the ANSI standard used in the United States and Canada, making it distinct from the functionally similar H4 bulb, which follows European ECE standards and shares the same electrical ratings but uses a slightly different base configuration.
Because the 9003 and H4 share the same wattage and voltage ratings but differ in base specification, substitution between the two types carries a fitment risk depending on the housing design.