Ducati 900 headlight bulbs utilize a 9003 size for both high and low beam functions. The replacement chart covers 1999 to 2002 model years with corresponding bulb 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 in the Ducati 900 headlight bulb size specifications.
The 9003 bulb is a dual-filament halogen type, meaning a single bulb contains two separate filaments, one for high beam and one for low beam operation.
The Ducati 900 (1999-2002) uses the 9003 bulb for both the high beam and low beam headlight positions, making the same bulb type serve both functions.
The 9003 bulb operates at 12 volts and is rated at 60 watts for the high beam filament and 55 watts for the low beam filament.
The 9003 designation is the North American market equivalent of the internationally designated HB2 bulb, and the two are electrically and physically interchangeable.
Because the same 9003 bulb type is specified for both beam positions across all listed model years, a single replacement bulb type covers the full headlight assembly for the 1999-2002 Ducati 900.
The 9003 bulb uses a P43t base, which is a three-pronged bayonet-style mount designed to prevent incorrect rotational installation.
The H4 bulb is a common alternative designation that shares the same dual-filament design and base type as the 9003, though fitment should be confirmed against the original socket before substitution.