BMW Motorcycle R nine T high beam and low beam headlight bulbs both utilize a 9003 size bulb for optimal illumination. The replacement chart covers vehicle production spanning 2014 to 2019 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 BMW Motorcycle R nine T uses the 9003 bulb for both high beam and low beam headlight positions across the 2014-2019 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments to serve both the high and low beam functions within one housing.
The 9003 operates at 12 volts and carries a wattage rating of 60W on the high beam filament and 55W on the low beam filament.
The 9003 uses a P43t base, which is a bayonet-style mount with a 43mm flange. This base type determines physical fitment into the headlight housing and is not interchangeable with other base configurations.
The 9003 designation follows the ANSI standard used in the United States and Canada. It is electrically and functionally equivalent to the H4 bulb used under international IEC standards, though the two designations reflect different regional classification systems.
Because the same 9003 bulb serves both beam positions on the R nine T, a single bulb failure can affect both high and low beam output simultaneously, as both filaments reside within one unit.