The Yamaha CF300 Inviter uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers 1986 to 1990 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 operating at 12 volts, with a high beam output of 60 watts and a low beam output of 55 watts, mounted on a P43t base.
The P43t base designation refers to a bayonet-style mount with a 43mm base width, a standard fitting used across a wide range of halogen headlight applications.
The 9003 follows the ANSI standard recognized in the United States and Canada, distinguishing it from the functionally similar H4 bulb, which follows ECE regulations used in other markets.
Because the 9003 and H4 share the same physical base and dual-filament design, they are often treated as interchangeable in practice, though they are technically governed by different standards.
The Yamaha CF300 Inviter uses the 9003 bulb for both the high beam and low beam headlight positions across the 1986-1990 model years.
A single 9003 bulb serves both beam functions simultaneously, as its dual-filament construction activates one filament for low beam and the other for high beam within the same housing.