Kia Telluride Back Up Light Bulb Size

The Kia Telluride back up light utilizes bulb size P21W or 921 depending on the specific version required for the vehicle. Data for the bulb sizes covers the range from 2021 to 2024.

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
2023-2024	P21W
2021-2022	921

Bulb Specifications

Description	Bulb Size
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.	P21W
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921

Other Locations

Additional Notes

The Kia Telluride uses two distinct backup light bulb types across its model years, with the 921 fitted to 2021-2022 models and the P21W fitted to 2023-2024 models.
The 921 bulb follows the ANSI standard, which governs lighting components in the United States and Canada. It is a T15 wedge-type bulb operating at 12V and 16W.
The P21W bulb follows the ECE standard, a regulatory framework used in Europe and much of the rest of the world. It is a single-filament signalling bulb operating at 12V and 21W.
The P21W uses a BA15s bayonet base, a twist-and-lock mounting style, while the 921 uses a wedge base, which is held in place by friction alone. These two base types are physically incompatible with each other.
The P21W draws 21W compared to the 16W of the 921, meaning the two bulbs are not electrically equivalent even though both operate on a 12V circuit.
Because the 2021-2022 and 2023-2024 Telluride use different bulb standards, base types, and wattage ratings, a bulb specified for one generation of the Telluride is not a direct replacement for the other.