Kia Niro Trunk Bulb Size

The Kia Niro trunk bulb uses a DE3175 size for this vehicle model. The replacement chart covers 2017 through 2024 production years with corresponding bulb size specifications.

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	DE3175
2019	DE3175
2018	DE3175 (From 12/9/2016)
2017	DE3175

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175

Other Locations

Additional Notes

The DE3175 is the trunk bulb size across all listed model years of the Kia Niro, spanning 2017-2019 and 2023-2024.
The DE3175 is a festoon-type bulb, meaning it is cylindrical in shape and makes electrical contact through metal caps at each end rather than through a base socket.
Festoon bulbs are held in place by spring-loaded clips within the fixture, with the end caps pressing against the contacts to complete the circuit.
The DE3175 has a nominal length of 31mm, which is the critical fitment factor for festoon bulbs, as the spring clips must apply adequate tension to maintain contact.
The DE3175 operates at 12 volts, consistent with standard automotive electrical systems.
The ANSI designation on the DE3175 indicates it conforms to a standardized specification recognized in the United States and Canada, which governs its physical and electrical properties.
The 2018 Kia Niro trunk bulb specification carries a production date qualifier of from 12/9/2016, indicating the DE3175 fitment applies to vehicles produced on or after that date within the 2018 model year.
Because festoon bulbs of the same length share the same contact style, the DE3175 is generally interchangeable with other 31mm festoon bulbs that match its voltage rating, provided the replacement meets the same physical length.