The Ducati 996 Monoposto headlight bulb specifications include an H1 size for high beam and H3 size for low beam applications. The replacement chart covers 1999 to 2001 production years with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ducati 996 Monoposto uses the H1 bulb type for its high beam headlight across the 1999-2001 model years.
The H1 is a single-filament halogen bulb operating at 55 watts with a P14.5s base, designed for dedicated high beam applications where a focused, long-range beam pattern is required.
The low beam headlight on the 996 Monoposto is fitted with the H3 bulb type across the same 1999-2001 span.
The H3 is a single-filament halogen bulb rated at 55 watts, distinguished by its PK22s base and a compact, elongated capsule form, which suits the tight housing geometries common in motorcycle headlight assemblies.
Because the H1 and H3 share a similar wattage rating but use entirely different base configurations, the two bulb types are not interchangeable with each other despite their physical resemblance in capsule size.
The P14.5s base of the H1 uses a single center pin and a smooth cylindrical collar, while the PK22s base of the H3 uses a single axial pin protruding from the end of the bulb, making incorrect installation mechanically prevented in properly designed sockets.
Both the H1 and H3 belong to the broader family of single-filament halogen bulbs governed by ECE Regulation 37, meaning replacement bulbs carrying that certification conform to the same output and dimensional standards as the originals.