Kia Telluride Tail Light Bulb Size

The Kia Telluride tail light requires a P21/5W bulb size for proper installation and function within the rear lighting assembly. Data for the specified component covers the range from 2021 to 2023.

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
2021-2023	P21/5W

Bulb Specifications

Description	Bulb Size
ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W.	P21/5W

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Additional Notes

The P21/5W is the tail light bulb used across the 2021-2023 Kia Telluride.
P21/5W is an ECE-standardized bulb type, meaning it conforms to regulations recognized across Europe and numerous other markets worldwide.
The bulb operates on a 12-volt electrical system, which is standard for passenger vehicles in this class.
P21/5W is a dual-filament bulb, with one filament rated at 21 watts and a second rated at 5 watts, allowing it to serve two distinct lighting functions within a single unit.
The BAY15d bayonet base is the mounting interface for this bulb type. The "d" designation indicates that the two base pins are offset at different heights, a feature that prevents incorrect installation orientation.
Because the BAY15d base uses offset pins, a single-contact bayonet bulb such as the BA15s is not interchangeable with the P21/5W, even though the physical housing may appear similar.