The Scion iQ tail light requires a 7443 bulb size for proper installation and function within the rear lighting assembly. Data for the bulb specifications covers the range from 2012 to 2015.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 7443 is the sole bulb type specified across all outer tail light positions for the Scion iQ covering model years 2012-2015.
The 7443 is an ANSI-standardized bulb used in the United States and Canada, classified as a T20 wedge type operating at 12 volts with a dual-filament configuration rated at 21W and 5W.
The dual-filament design of the 7443 allows a single bulb to serve two lighting functions simultaneously, typically combining a brighter stop or turn signal output with a dimmer running light output within one housing.
The 2015 Scion iQ outer tail light carries a production date qualifier, specifying the 7443 for vehicles built up to June 2015, which indicates a mid-year production cutoff for that fitment.
The 2013 Scion iQ outer tail light similarly carries a production date qualifier, specifying the 7443 from September 2012 onward, reflecting a mid-cycle introduction of that fitment within the model year.
The T20 wedge base of the 7443 is not interchangeable with single-filament T20 variants such as the 7440, despite sharing the same physical base form, as the 7440 lacks the second filament contact required for dual-function operation.