The Suzuki Motorcycle VX800 headlight uses a 9003 bulb size for both high beam and low beam applications. The replacement chart covers 1990 to 1993 model 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 bulb is the sole bulb type specified across all headlight positions on the Suzuki Motorcycle VX800, covering model years 1990-1993.
The 9003 is an ANSI-standard designation used in the United States and Canada, making it a region-specific classification for what is otherwise internationally designated as the H4 bulb type.
As a dual-filament halogen bulb, the 9003 houses both the high beam and low beam filaments within a single glass envelope, which is why it serves both headlight functions on the VX800 without requiring separate bulb types for each.
The 9003 operates on a 12-volt electrical system and draws 60 watts on the high beam filament and 55 watts on the low beam filament.
The P43t base is a bayonet-style mount with a 43mm flange, a standardized fitting that physically locks the bulb into the headlight housing through a twist-and-seat mechanism.
Because the 9003 and H4 share the same physical base, wattage ratings, and filament configuration, they are generally regarded as interchangeable in fitment, though the designations originate from different regional standards bodies.