The Aprilia SR 50 uses an H8 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production spanning 2006 to 2020 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 Aprilia SR 50 uses the H8 bulb size for both the high beam and low beam headlight positions across the 2006-2020 model years.
The H8 is a single-filament halogen bulb, meaning it serves one lighting function per unit rather than combining two functions within a shared envelope as twin-filament bulbs do.
The H8 operates at 12 volts and 35 watts, placing it in the lower wattage range of the halogen family, which is typical for smaller-displacement two-wheeled vehicles.
The H8 uses a PGJ19-1 base, a bayonet-style connector specific to the PGJ19 family. This base type is not interchangeable with the more widely distributed H7 or H11 bases, despite those bulbs sharing a similar physical profile.
The H8 carries ECE certification, the regulatory standard applied across Europe and many international markets, and also holds approval for use in the United States.
Because the same H8 specification applies to both the high beam and low beam positions, the SR 50 uses a single bulb type throughout its headlight assembly rather than requiring two distinct bulb sizes.