The Toyota Yaris iA parking light requires bulb size 7443NA or 7444NA depending on the specific version required for the lighting assembly. Data for the lighting components covers the range from 2017 to 2018.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Toyota Yaris iA front parking light uses the 7443 bulb for the 2017-2018 model years. This is an ANSI-standard dual-filament wedge bulb in the T20 form factor, rated at 12V with a 21W high filament and 5W low filament.
The T20 wedge base is a common automotive bulb format. The dual-filament design allows a single bulb to serve two brightness levels, which is typical in combined parking and signal light applications.
The 7443NA is listed for the 2018 Yaris iA as an additional front parking light option. It shares the same T20 form factor and 12V/21W/5W rating as the 7443 but features natural amber glass rather than a clear envelope.
The 2017 Yaris iA uses the 7444NA in the corresponding position where the 2018 model uses the 7443NA. Although both are T20 dual-filament bulbs with natural amber glass and identical voltage and wattage ratings, the 7443NA and 7444NA carry different ANSI designations and are not confirmed as interchangeable.
Natural amber glass bulbs such as the 7443NA and 7444NA produce an amber color output through the glass itself rather than through a coated or painted lens. This is relevant in applications where regulations require amber light output from the bulb rather than from the housing.