Ski-Doo MX Z 600 X-RS high beam and low beam headlight bulbs both utilize a 9003 size. The replacement chart covers 2007 to 2010 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 bulb is an ANSI-standard dual-filament halogen type, meaning a single bulb contains two separate filaments that serve two distinct functions within one housing unit.
The Ski-Doo MX Z 600 X-RS uses the 9003 bulb for both its high beam and low beam headlight positions across the 2007 and 2010 model years.
Because the same 9003 bulb occupies both the high beam and low beam sockets, the dual-filament design is what allows a single bulb to fulfill both lighting roles simultaneously.
The 9003 operates at 12 volts, with the high beam filament rated at 60 watts and the low beam filament rated at 55 watts, reflecting the greater light output expected from the high beam function.
The 9003 uses a P43t base, which is a standardized bayonet-style fitting that determines physical socket compatibility and is not interchangeable with bulbs carrying different base designations.
The 9003 designation is specific to the ANSI standard used in the United States and Canada, and it is functionally equivalent to the H4 bulb used under international standards, though the two designations originate from different standardization bodies.
Because the 9003 and H4 share the same physical construction and electrical ratings, substitution between the two is generally considered acceptable in practice, provided the base and voltage requirements match the vehicle socket.