The ZERO Zero DSR uses 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 2016 to 2017 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 is an ANSI-standard dual-filament halogen bulb rated at 12 volts, with a high beam filament drawing 60 watts and a low beam filament drawing 55 watts. It uses a P43t base.
The Zero DSR uses the 9003 bulb for both the high beam and low beam headlight positions across the 2016-2017 model years, meaning a single bulb type serves both lighting functions.
Because the 9003 carries dual filaments within one housing, it handles both beam modes without requiring separate bulbs for each function.
The 9003 designation follows ANSI standardization applicable in the United States and Canada, which governs the bulb's base type, voltage, and wattage ratings.
The P43t base is a bayonet-style mount with a 43mm collar, and its presence on the 9003 determines physical fitment into the Zero DSR headlight socket.
The 9003 is electrically and physically equivalent to the H4 bulb used under international IEC standards, though the designations differ by market region.