Kia K5 Trunk Bulb Size

Additional Notes

• The DE3423 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.
• The DE3423 measures 41mm in length, which is the critical fitment factor for festoon bulbs, as the end-cap contacts must span the fixture's contact points precisely.
• The DE3423 operates at 12 volts, consistent with standard automotive electrical systems.
• The DE3423 designation follows the ANSI standard used in the United States and Canada, meaning the specification applies to North American market vehicles.
• The Kia K5 uses the DE3423 for its trunk bulb across the 2021-2024 model years, indicating a consistent fitment across that production span.
• Festoon bulbs of the same length are sometimes cross-compatible across different part numbers, but the 41mm length of the DE3423 must be matched exactly, as a shorter or longer festoon will either fail to make contact or will not seat within the fixture.