The Ducati 999S high beam and low beam headlight bulbs both utilize a 9005 size. The replacement chart covers 2003 to 2006 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 9005 bulb type is specified for both the high beam and low beam headlight positions across all listed model years of the Ducati 999S, covering the 2003-2006 production span.
The 9005 is a single-filament halogen bulb operating at 12 volts with a rated wattage of 65 watts, belonging to the P20d base family as defined by SAE and ANSI standards.
The use of the same 9005 bulb code for both high and low beam positions in the Ducati 999S indicates that the motorcycle uses separate, dedicated lamp housings for each function rather than a dual-filament arrangement.
The 9005 bulb produces a high-intensity output relative to other halogen types in its class, which is consistent with its common application in high beam roles across many vehicle platforms.
The 9006 bulb, while physically similar to the 9005 and sharing the same base family, is rated at 55 watts and is not interchangeable with the 9005 without modification, as the base tabs are positioned differently to prevent cross-fitting.
HB3 is the international designation equivalent to the 9005, and bulbs marketed under either designation refer to the same specification, making them functionally identical for fitment purposes.
The consistent specification of the 9005 across all four model years without variation indicates no mid-cycle change in the lighting system of the 999S during the 2003-2006 period.