Suzuki Motorcycle GS500 headlight bulbs utilize a 9003 size for both high beam and low beam functions. The replacement chart covers vehicle production spanning 1989 to 2009.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Suzuki Motorcycle GS500 uses the 9003 bulb size across both the high beam and low beam headlight positions for every model year from 1989 to 2009, with the exception of 2003, for which no data is present in the specifications.
The 9003 is an ANSI-standard halogen bulb recognized in the United States and Canada, operating at 12 volts with a dual-filament design rated at 60 watts for high beam and 55 watts for low beam output.
Because the 9003 bulb carries two filaments within a single housing, it serves both the high beam and low beam functions from one unit, which accounts for its use across both headlight positions on the GS500.
The 9003 bulb uses a P43t base, a bayonet-style mount with a 43mm collar, which physically determines socket compatibility and is a critical factor in fitment.
The 9003 designation is the ANSI classification for what is internationally known as the H4 bulb type. The two designations refer to the same bulb and are generally interchangeable, though labeling may differ by market.
The consistent use of a single bulb type across all listed model years of the Suzuki Motorcycle GS500 indicates that the headlight socket and housing specification did not change throughout the production run covered by these records.