The Ski-Doo Grand Touring 550 uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 2010 through 2014 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 bulb type specified for both the high beam and low beam headlight positions on the Ski-Doo Grand Touring 550 across the 2010-2014 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 serves both beam functions from a single socket, which is reflected in its use across both headlight positions in these specifications.
The 9003 operates on a 12-volt electrical system and uses a P43t base, a bayonet-style mount with a 43mm flange that physically locks the bulb into the housing.
The 9003 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning it conforms to defined performance and dimensional standards rather than being a proprietary specification.
The 9003 is electrically and physically equivalent to the H4 bulb used in international markets, though the two designations originate from different standardization bodies and packaging may differ by region.
Because the 9003 handles both beam functions, replacing it with a single-filament bulb of similar wattage would result in the loss of one beam mode, making filament count a critical factor in sourcing a compatible replacement.