The KTM 990 Adventure uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 2006 through 2012 model year specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9003 is the sole bulb type specified across all headlight positions for the KTM 990 Adventure, covering model years 2006-2012.
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 KTM 990 Adventure uses the same 9003 bulb for both its high beam and low beam headlight positions across all listed years, indicating a single-bulb headlight system rather than separate dedicated bulbs per function.
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, which is a bayonet-style mount with a 43mm collar. This base type is a physical fitment factor that determines whether a replacement bulb will seat correctly in the socket.
The 9003 is defined under the ANSI standard, applicable in the United States and Canada. It is functionally equivalent to the H4 bulb used under European ECE standards, though the two designations originate from different regulatory frameworks and packaging labels may differ.
Because the 9003 and H4 share the same physical construction and P43t base, they are widely regarded as interchangeable in practice, though the specifications reference only the 9003 designation for this application.