Kia Soul Back Up Light Bulb Size

Additional Notes

• The 921 is the sole back up light bulb size specified for the Kia Soul across all listed model years.
• The 921 bulb follows the ANSI standard recognized in the United States and Canada, classifying it as a regionally standardized automotive bulb.
• It belongs to the T15 wedge bulb family, a designation that refers to its tubular glass envelope and wedge-style base, which seats directly into a socket without a separate metal base or locking pins.
• The 921 operates at 12 volts and draws 16 watts, figures consistent with standard automotive electrical systems and typical reverse light output requirements.
• The Kia Soul (2010-2024) uses the 921 for its back up light position across the listed years, with 2021 and 2013 not present in the specifications.
• The T15 wedge base format means the 921 is physically interchangeable with other T15 wedge bulbs, though voltage and wattage ratings must match the original specification to avoid electrical or performance issues.
• At 16 watts, the 921 falls within the single-filament wedge bulb category, meaning it serves a single lighting function rather than a dual-filament arrangement used in combination stop and tail applications.