The Piaggio MP3 400 uses H1 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production spanning 2008 to 2014.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Piaggio MP3 400 uses the H1 bulb type for both high beam and low beam headlights across all model years from 2008-2014.
The H1 is a single-filament halogen bulb, meaning a separate H1 unit is required for each lighting function rather than one dual-filament bulb serving both beams.
H1 bulbs are built on the P14.5s base, a single-pin design that locks into its socket at a fixed rotational position to ensure correct filament alignment.
The H1 operates at 12 volts and 55 watts, placing it within the standard range for halogen headlight bulbs used in 12-volt vehicle electrical systems.
H1 bulbs conform to ECE regulations, the lighting standard applied across Europe and much of the world, and are also approved for use in the United States and Japan.
Because both the high beam and low beam positions share the same H1 specification on the MP3 400, the same bulb part number is applicable to either socket, though each position requires its own individual unit.