The Ski-Doo GTX 500SS high beam and low beam headlight bulbs both utilize a 9003 size. The replacement chart covers 2005 through 2009 production specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ski-Doo GTX 500SS uses the 9003 bulb for both the high beam and low beam headlight positions across the 2005-2009 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments: one rated at 60W for high beam output and one rated at 55W for low beam output.
Because both filaments are housed in one unit, the 9003 bulb serves both lighting functions simultaneously, which is why the same bulb size appears in both the high beam and low beam positions.
The 9003 operates on a 12V electrical system and uses a P43t base, which is a bayonet-style fitting with a 43mm collar width.
The 9003 designation follows the ANSI standard used in the United States and Canada, making it a regionally defined specification rather than a universal international standard.
The P43t base is not universally interchangeable with other base types, so substituting a bulb with a different base configuration would not be physically compatible with the GTX 500SS headlight housing.