BMW Motorcycle R75/7 uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1976 to 1977 production 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 9003 bulb is the sole bulb type listed across all headlight positions for the BMW Motorcycle R75/7, covering both the 1976-1977 model years.
The 9003 is a dual-filament halogen bulb, meaning a single unit contains separate filaments for both high beam and low beam operation, which accounts for its use in both headlight positions on the R75/7.
The 9003 operates on a 12-volt electrical system 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, a bayonet-style mount with a 43mm collar, which physically determines fitment compatibility and is not interchangeable with bulbs using different base types.
The 9003 designation follows the ANSI standard applicable in the United States and Canada. It is functionally equivalent to the European H4 bulb, though the two designations reflect different regional certification systems and packaging conventions.