The Vespa Primavera uses HS1 bulb size for both high beam and low beam headlight applications. This replacement chart covers 2015 to 2018 model 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 Vespa Primavera uses the HS1 bulb for both its high beam and low beam headlight positions across the 2015-2018 model years.
The HS1 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments to serve both high and low beam functions within one unit.
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 uses a PX43t base, which is a bayonet-style fitting specific to motorcycle and scooter lighting applications and is not interchangeable with common automotive bulb bases.
The HS1 is built to the ECE standard, a regulatory framework recognized across Europe and numerous other markets worldwide.
Because the same HS1 bulb type covers both beam positions on the Primavera, a single replacement bulb addresses both functions, provided the existing socket and wiring are intact.