Suzuki Motorcycle DR-Z400 headlight bulbs utilize a 9003 size for both high beam and low beam functions. The replacement chart covers 2000 to 2007 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 Suzuki Motorcycle DR-Z400 uses the 9003 bulb for both its high beam and low beam headlight positions across the 2000-2007 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments: one rated at 60W for high beam output and one rated at 55W for low beam output.
Because the 9003 handles both beam functions within one bulb, the DR-Z400 does not require separate bulbs for high and low beam operation.
The 9003 operates on a 12V electrical system and uses a P43t base, which is a bayonet-style mount with a 43mm flange used to secure and align the bulb within the headlight housing.
The 9003 designation follows the ANSI standard recognized in the United States and Canada. It is functionally equivalent to the H4 bulb used under international IEC standards, though the designations are not always interchangeable in every housing due to base tolerances.