The Ski-Doo GSX 500SS headlight bulb uses a 9003 size for both high beam and low beam functions. The replacement chart covers 2004 to 2009 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 Ski-Doo GSX 500SS uses the 9003 bulb for both high beam and low beam headlight positions across the 2004-2009 model years.
The 9003 is an ANSI-standard designation recognized in the United States and Canada, making it the North American equivalent of the internationally designated H4 bulb.
As a dual-filament halogen bulb, the 9003 houses two separate tungsten filaments within a single glass envelope, with one filament dedicated to high beam output and the other to low beam output.
The 9003 operates at 12 volts and draws 60 watts on the high beam filament and 55 watts on the low beam filament.
The bulb uses a P43t base, which is a three-pronged bayonet-style mount with a 43mm collar, a physical characteristic that determines socket compatibility.
Because both the high beam and low beam positions share the same 9003 specification, a single bulb type serves the entire headlight assembly rather than requiring separate bulbs for each function.
The P43t base is not interchangeable with other common base types such as H7 or H11, which use different mounting configurations, so substitution with physically similar-looking bulbs of a different base type is not compatible.