The Vespa LX 50 headlight bulb uses an HS1 size for both high beam and low beam applications. The replacement chart covers vehicle production years spanning 2005 to 2014 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 Vespa LX 50 uses the HS1 bulb type for both its high beam and low beam headlight positions across the 2005-2014 model years.
The HS1 is a dual-filament halogen bulb, meaning a single unit contains separate filaments for both high and low beam functions within one housing.
The HS1 operates at 12 volts and carries a 35W/35W rating, with each wattage figure corresponding to one of the two filaments.
The HS1 bulb uses a PX43t base, a bayonet-style fitting specific to motorcycle and scooter headlight applications, which is not interchangeable with common automotive bulb bases such as H4 or H7.
The HS1 standard falls under ECE regulation, a certification framework recognized across Europe and numerous other markets worldwide.
Because both the high beam and low beam positions on the Vespa LX 50 share the same HS1 specification, a single bulb type serves the entire headlight assembly.