Toyota Yaris front turn signal bulbs use 7444NA or 7443NA size, while rear turn signal bulbs use 7440NA or 7440 size. The replacement chart covers 2013 through 2019 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 front turn signal positions across the listed Toyota Yaris model years use either the 7444NA or 7443NA bulb, both of which are dual-filament T20 wedge bulbs rated at 12V with a 21W/5W power draw, conforming to ANSI standards applicable in the US and Canada.
The rear turn signal positions across the listed years use either the 7440NA or the 7440, both of which are single-filament T20 wedge bulbs rated at 12V, 21W, also under ANSI standards for the US and Canada.
The "NA" suffix on bulbs such as the 7440NA, 7443NA, and 7444NA denotes natural amber glass, meaning the amber color is produced by the glass envelope itself rather than by an amber-coated or clear bulb paired with a colored lens.
Although the 7443NA and 7444NA share the same T20 wedge base, dual-filament construction, voltage, and wattage ratings, they carry distinct ANSI part numbers, and the Toyota Yaris (2013-2019) front turn signal specifications do not treat them as interchangeable across all years.
The 7440 and 7440NA are functionally identical in filament count, voltage, and wattage, with the sole distinction being the presence or absence of natural amber glass; the 2018 rear turn signal position is specified as the clear-envelope 7440, while the 2013-2014 and 2019 rear positions call for the 7440NA.
The dual-filament rating of 21W/5W on the 7443NA and 7444NA indicates that one filament operates at 21 watts for the turn signal function and a second filament operates at 5 watts, typically serving a parking or running light function within the same bulb housing.
All four bulb types in these specifications share the T20 wedge base form factor, which is a push-in base without a metal collar, commonly used in automotive signal and tail light applications.
The front and rear turn signal positions on the listed Yaris years use bulbs from different filament categories, with the front requiring dual-filament types and the rear requiring single-filament types, making cross-position substitution electrically incompatible despite the shared T20 base.