The Moto Guzzi 1100 Sport headlight bulb uses a 9003 size for both high and low beam functions. This replacement chart covers 1995 to 1996 production 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 is the sole bulb type listed across all headlight positions in these specifications. It is a dual-filament halogen bulb operating at 12 volts, with a high-beam filament rated at 60 watts and a low-beam filament rated at 55 watts.
The 9003 uses a P43t base, a three-pronged bayonet-style mount that physically distinguishes it from single-filament halogen types and prevents incorrect installation of incompatible bulbs.
The 9003 designation follows the ANSI standard applicable in the United States and Canada. This classification system governs the bulb's filament placement, light output, and base configuration.
Because the 9003 is dual-filament, a single bulb serves both the high beam and low beam functions. The Moto Guzzi 1100 Sport (1995-1996) reflects this by listing the same 9003 size for both the high beam and low beam headlight positions.
The 9003 is functionally equivalent to the international HB2 designation and is also cross-compatible with the H4 bulb type, which shares the same P43t base and dual-filament design, though regulatory labeling differs by market.