Kia Niro Map Light Bulb Size

The Kia Niro map light utilizes bulb size DE3425 or 904 depending on the specific configuration of the vehicle. Data for the bulb sizes covers the range from 2018 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 Type	Shop
2021-2023	DE3425	Check Price
2018	904	Check Price

Bulb Specifications

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

Other Locations

Additional Notes

The DE3425 is a festoon-type bulb measuring 41mm in length with end-cap contacts, operating at 12V. Festoon bulbs seat by pressing lengthwise into spring-loaded holders, with electrical contact made at each end rather than through a base socket.
The 904 is a T10 miniature wedge bulb rated at 12V and 8W. Wedge-type bulbs rely on the deformed base of the glass envelope itself to grip the socket, with no separate metal base or pins.
Both the DE3425 and 904 conform to ANSI standards applicable in the US and Canada, meaning their physical and electrical ratings follow a standardized specification recognized across North American markets.
The Kia Niro uses the DE3425 for map light fitment across the 2021-2023 model years, while the 2018 model year uses the 904 instead.
The DE3425 and 904 are not interchangeable. They differ in bulb form factor, socket type, and wattage rating, and the physical mounting mechanisms are incompatible with each other's housings.