BMW Motorcycle G310GS uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 2018 to 2019 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 is a dual-filament halogen bulb, meaning a single unit contains two separate filaments to serve both high and low beam functions from one housing position.
The BMW Motorcycle G310GS uses the 9003 bulb for both its high beam and low beam headlight positions across the 2018-2019 model years.
Because both beam positions share the same bulb type, the high and low beam functions are served by the two filaments within a single 9003 unit rather than by separate bulbs in separate housings.
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 designation follows ANSI standards applicable in the United States and Canada, and it uses a P43t base, which is a bayonet-style mount with a 43mm collar.
The 9003 and H4 bulbs share the same physical construction and P43t base, making them functionally interchangeable in most applications, though the 9003 designation is the ANSI classification used in North American markets.