Kia Soul EV Back Up Light Bulb Size

The Kia Soul EV back up light uses a 921 bulb size for this component. The replacement chart covers vehicle production years spanning 2015 to 2019.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2015-2019	921

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921

The Kia Soul EV uses the 921 bulb size for the back up light across the 2015-2019 model years.
The 921 is an ANSI-standardized bulb type, meaning its specifications are governed by a recognized North American industry standard applicable in both the United States and Canada.
The 921 bulb follows the T15 wedge form factor. A wedge bulb uses a pinched glass base that slots directly into a socket without a separate metal base or pins, relying on tension to maintain the electrical connection.
The 921 operates at 12 volts and draws 16 watts, which is consistent with standard automotive low-voltage electrical systems.
The T15 designation refers to the bulb's tubular shape, with the numeric portion indicating a width of 15 eighths of an inch. This form factor is common in reverse and cargo light applications.
Because the 921 is a wedge-type bulb, it is not interchangeable with bayonet-base or indexed-pin bulb types, even when wattage or voltage ratings are similar.