Kia Niro Map Light Bulb Size

The Kia Niro map light bulb uses 2 distinct sizes: DE3425 and 904, with specifications varying across model generations. The replacement chart covers vehicle production years from 2017 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
2021-2024	DE3425
2017-2020	904

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V.	DE3425
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.	904

Other Locations

Additional Notes

The Kia Niro map light draws from two distinct bulb types across its model years: the DE3425 festoon bulb for 2021-2024 and the 904 miniature wedge bulb for 2017-2020.
The DE3425 is a festoon-style bulb measuring 41mm in length with end-cap contacts at each end, operating at 12V. Its end-cap design means it is held in place by spring clips rather than a socket.
The 904 is a T10 miniature wedge bulb rated at 12V and 8W. The wedge base is formed by the glass envelope itself, which is pinched at the bottom to create a friction fit in its socket.
Both the DE3425 and the 904 conform to ANSI standards applicable in the United States and Canada.
The two bulb types use fundamentally different mounting systems. The festoon end-cap design of the DE3425 is not interchangeable with the wedge base of the 904, and substituting one for the other is not physically compatible.
The 2020 Kia Niro represents a transitional model year, as it is the last year specified with the 904 wedge bulb before the DE3425 festoon type was adopted for the 2021 model year.