Ducati 748S Monoposto headlight bulbs utilize H1 size for high beam and H3 size for low beam applications. The replacement chart covers 2000 to 2002 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 H1 bulb is a single-filament halogen type operating on a two-pin base, commonly rated at 55 watts. It produces a focused, intense beam, which suits high beam applications where maximum forward projection is the priority.
The H3 bulb is also a single-filament halogen type but uses a single-pin base with a wire lead connector. It is frequently used in low beam and fog light positions where a wider, more diffused light pattern is required.
The Ducati 748S Monoposto uses the H1 bulb for the high beam headlight across the 2000-2002 model years.
The low beam headlight on the Ducati 748S Monoposto uses the H3 bulb across the same 2000-2002 model years.
Because the H1 and H3 bulbs use physically different base configurations, they are not interchangeable with each other, despite both being single-filament halogen types operating at similar wattages.
The consistent use of H1 and H3 across all three listed model years indicates that no bulb specification changes occurred within this production period for the 748S Monoposto.