Scion iQ front and rear turn signal bulbs both utilize the 7440NA bulb size. The replacement chart covers 2012 to 2015 vehicle production 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 7440NA is a single-filament wedge bulb built to the T20 form factor, operating at 12 volts and rated at 21 watts.
The "NA" suffix in the 7440NA designation denotes natural amber glass, meaning the amber color is produced by the glass envelope itself rather than by an amber-coated or painted lens.
The 7440NA conforms to ANSI standards applicable in the United States and Canada, distinguishing it from regional variants that may share the same base type but differ in color or electrical ratings.
The Scion iQ uses the 7440NA for both the front and rear turn signal positions across all model years from 2012-2015, meaning a single bulb type serves all four turn signal housings on the vehicle.
The 7440 base type is a single-filament bulb, which differs from the physically similar 7443, a dual-filament variant. The two are not interchangeable despite sharing the same T20 wedge base family.
Because the 7440NA uses natural amber glass, substituting a clear 7440 bulb would alter the output color and may not meet turn signal visibility regulations in certain jurisdictions.