Kia Soul Trunk Bulb Size

The Kia Soul trunk utilizes DE3175 and DE3423 bulb sizes for the interior lighting components located within the rear cargo area. Available data covers a specific range from 2010 through 2024 for the listed vehicle components.

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
2023-2024	DE3175	Check Price
2015-2019	DE3175	Check Price
2014	DE3175 (From 11/20/2013)	Check Price
2010-2011	DE3423	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175	Check Price
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V.	DE3423	Check Price

Other Locations

Additional Notes

The DE3175 is a festoon-type bulb with a 31mm length, end-cap contacts, and a 12V rating, conforming to the ANSI standard used in the United States and Canada.
The DE3423 shares the same festoon construction and end-cap contact design as the DE3175 but has a longer 41mm body, making the two bulbs physically incompatible with each other despite their similar form factor.
The Kia Soul uses the DE3175 for its trunk across the 2014-2019 and 2023-2024 model years, while the 2010 and 2011 model years require the longer DE3423 instead.
The 2014 Kia Soul specifies the DE3175 only for vehicles produced from November 20, 2013 onward, indicating a mid-cycle production change that affects bulb fitment within that single model year.
Festoon bulbs are held in place by spring-loaded end caps rather than a bayonet or wedge base, meaning the physical length of the bulb is the primary factor determining whether it seats correctly in the housing.
Because the DE3175 and DE3423 differ in length by 10mm, substituting one for the other risks either a loose fit or an inability to install the bulb, regardless of the shared 12V electrical rating.