Yamaha ET340 Enticer 340 headlight bulbs use 9003 size for both high beam and low beam applications. The replacement chart covers 1985 to 1988 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 bulb is the sole bulb type specified across all headlight positions for the Yamaha ET340 Enticer 340, covering the 1985-1988 model years.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains separate filaments for both high beam and low beam operation, which accounts for its use in both headlight positions on this vehicle.
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, a standardized bayonet-style fitting that determines physical socket compatibility during replacement.
The 9003 is designated as an ANSI standard bulb applicable in the United States and Canada, indicating it conforms to a defined North American specification rather than an exclusively European or international standard.
The 9003 and H4 bulb types share the same dual-filament halogen design and P43t base, though they originate from different standardization bodies; the 9003 follows the ANSI designation while H4 follows the ECE designation, and the two are widely regarded as interchangeable in practice.