The Moto Guzzi Audace high beam and low beam headlight bulbs both utilize a 9003 bulb size. The replacement chart covers 2015 to 2018 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 9003 bulb is the sole headlight bulb type specified for the Moto Guzzi Audace across all listed model years, covering both high beam and low beam functions for the 2015-2018 range.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments: one rated at 60W for high beam output and one rated at 55W for low beam output.
Because both the high beam and low beam positions share the same 9003 specification, a single bulb type serves both lighting functions rather than requiring two distinct bulb types.
The 9003 operates on a 12V electrical system and uses a P43t base, which is a bayonet-style mount with a 43mm flange used to secure and align the bulb within the headlight housing.
The 9003 designation follows the ANSI standard, which is the classification system used in the United States and Canada, and it is functionally equivalent to the H4 bulb used under European ECE standards, though the two designations originate from different regulatory frameworks.
The P43t base is specific to the H4/9003 bulb family, and bulbs with different base types are not physically interchangeable with the Audace headlight housing as specified.