The Yamaha FZ8 front turn signal requires a 7443 bulb size while the rear turn signal uses a 7440 bulb size. The replacement chart covers 2011 through 2013 model years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Yamaha FZ8 uses two distinct T20 wedge bulb types across its front and rear turn signal positions for the 2011-2013 model years.
The T20 designation refers to a wedge-base bulb with a 20mm glass envelope, a common form factor in automotive and motorcycle lighting applications.
The front turn signal on the FZ8 takes a 7443 bulb, which is a dual-filament T20 wedge type rated at 12V with a 21W main filament and a 5W secondary filament.
The dual-filament design of the 7443 allows a single bulb to serve two lighting functions, typically a brighter output for signaling and a dimmer output for a running or parking light role.
The rear turn signal on the FZ8 takes a 7440 bulb, which is a single-filament T20 wedge type rated at 12V and 21W.
Although the 7443 and 7440 share the same T20 wedge base and physical housing profile, they are not interchangeable due to the difference in filament count and internal pin configuration.
Both the 7443 and 7440 are ANSI-standardized bulb types, meaning their specifications are governed by a recognized North American standard applicable in the United States and Canada.
The 21W rating on both bulb types reflects the wattage of the primary filament, which is the active filament during turn signal operation.