BMW Motorcycle R65LS uses 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1981 to 1985 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 BMW Motorcycle R65LS uses the 9003 bulb for both high beam and low beam headlight positions across all listed model years from 1981-1985.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments to serve both 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 collar, and fitment requires a matching socket of this specific base type.
The 9003 designation follows the ANSI standard used in the United States and Canada, and it is physically and electrically equivalent to the international H4 designation, though labeling differences exist between markets.
Because the same bulb size is specified for both the high beam and low beam positions on the R65LS, the two positions are served by the dual filaments of a single 9003 unit rather than by separate bulbs.