The Toyota Yaris tail light requires a 7443 bulb size for proper installation and function within the rear lighting assembly. Data for the specified component covers the range from 2013 to 2019.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 7443 bulb is the specified size for the outer tail light position on the Toyota Yaris across the 2013, 2014, 2018, and 2019 model years.
The 7443 follows the ANSI standard used in the United States and Canada, classifying it as a regionally standardized bulb type.
This bulb belongs to the T20 wedge family, which refers to its base style. The wedge base design means the bulb is held in place by the socket itself rather than by pins or a bayonet mechanism.
The 7443 is a dual-filament bulb, operating at 12 volts with two wattage ratings: 21W for the high-intensity filament and 5W for the low-intensity filament. This configuration allows a single bulb to serve both a brighter stop-light function and a dimmer running-light function.
The dual-filament nature of the 7443 is a fitment-critical detail. A single-filament substitute would not replicate both electrical functions required at the outer tail light position on the Toyota Yaris.
The 7440 is a physically similar T20 wedge bulb but carries only a single filament. Despite its resemblance to the 7443, it is not an equivalent replacement for applications requiring dual-filament operation.