Yamaha MT-07 front turn signal bulbs measure 7443 in size, while rear turn signal bulbs measure 7440, with each bulb type specified for its respective location. The replacement chart covers 2018 to 2019 model years and details bulb size specifications across the vehicle production range.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Yamaha MT-07 uses two distinct T20 wedge bulb types across its front and rear turn signal positions for the 2018-2019 model years.
The T20 wedge base is a standardized form factor, meaning both the 7443 and 7440 share the same physical housing shape despite differing in filament configuration.
The front turn signal on the Yamaha MT-07 takes a 7443 bulb, which is a dual-filament type rated at 12V with a 21W main filament and a 5W secondary filament.
The rear turn signal position uses a 7440 bulb, which is a single-filament type rated at 12V, 21W, carrying no secondary filament circuit.
Because the 7443 carries a dual-filament design and the 7440 does not, the two bulb types are not interchangeable despite sharing the T20 wedge base form factor.
Both the 7443 and 7440 are classified under ANSI standards and are designated for the US and Canadian markets.
The 21W rating on both bulb types reflects the wattage of the primary filament, which governs the brightness output during active turn signal operation.
The secondary 5W filament in the 7443 is typically associated with a parking or position light function, which is why it appears in the front turn signal position rather than the rear.