The Triumph Street Scrambler uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production spanning 2017 to 2018.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9003 is the bulb type specified for both the high beam and low beam headlight positions on the Triumph Street Scrambler across the 2017-2018 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments: one rated at 60W for high beam output and one rated at 55W for low beam output.
Operating voltage for the 9003 is 12V, consistent with standard 12-volt automotive electrical systems.
The 9003 uses a P43t base, which is a three-pronged bayonet-style mount. This base type determines physical fitment and is not interchangeable with single-contact or other base configurations.
The 9003 designation follows ANSI standards as applied in the United States and Canada. This standardization means bulbs from different manufacturers carrying the 9003 designation share the same electrical and base specifications.
Because the same 9003 bulb type is specified for both the high and low beam positions, the Street Scrambler uses a single dual-filament bulb per headlight assembly rather than separate bulbs for each function.