The Yamaha CS340 Ovation uses a 9003 bulb size for both high beam and low beam headlight applications. The replacement chart covers vehicle production spanning 1989 to 2000.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Yamaha CS340 Ovation uses the 9003 bulb size for both its high beam and low beam headlight positions across all listed model years from 1989-2000.
The 9003 is an ANSI-standardized bulb designation recognized in the United States and Canada, operating on a 12-volt electrical system.
The 9003 bulb is a dual-filament halogen type, meaning a single bulb unit contains two separate filaments to serve both the high beam and low beam functions.
The high beam filament in the 9003 bulb is rated at 60 watts, while the low beam filament is rated at 55 watts.
The 9003 bulb uses a P43t base, which is a bayonet-style mount with a 43mm collar, and fitment requires compatibility with this specific base type.
Because the 9003 is a dual-filament bulb serving both beam positions on the Yamaha CS340 Ovation, both the high beam and low beam headlight positions draw from the same physical bulb socket and housing.
The 9003 designation is functionally equivalent to the H4 bulb used in international markets, sharing the same dual-filament halogen construction and P43t base, though the designations originate from different standardization systems.