Yamaha MM Mountain Max high beam and low beam headlight bulbs both utilize a 9003 bulb size. The replacement chart covers vehicle production spanning 1997 to 2003.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Yamaha MM Mountain Max uses the 9003 bulb size across both high beam and low beam headlight positions for the 1997-2003 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments to serve both the high beam and low beam functions independently.
Because the 9003 handles both beam functions in the MM Mountain Max, the same bulb specification applies to both headlight positions, with no separate bulb type designated for each.
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, which are standard output levels for this bulb type.
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 is defined under ANSI standards and is recognized in both the United States and Canada, placing it within a regulated specification framework for bulb geometry and electrical performance.
The 9003 bulb is closely related to the H4 bulb, as both share the dual-filament halogen design and P43t base. However, the 9003 and H4 are not always interchangeable due to differences in filament positioning that can affect beam pattern alignment in certain housings.