The Suzuki Motorcycle GSX-S750 uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 2015 through 2019 model 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 the sole bulb type specified across all listed model years of the Suzuki Motorcycle GSX-S750, covering both high beam and low beam headlight positions for 2015, 2016, 2018, and 2019.
The 9003 is a dual-filament halogen bulb, meaning a single physical bulb contains two separate filaments, one rated at 60W for high beam output and one at 55W for low beam output.
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, which is the classification system used in the United States and Canada, as opposed to the ECE system used in many other regions.
Because the same 9003 bulb serves both the high beam and low beam positions, a single bulb replacement addresses both functions simultaneously, as the two filaments are housed within one unit.
The H4 bulb is the international ECE equivalent of the ANSI 9003 and shares the same dual-filament design and P43t base, though labeling and packaging may differ by market. Confirming the correct designation for the intended market is advisable before substitution.