INFINITI QX55 Trunk Bulb Size

The INFINITI QX55 trunk utilizes a DE3423 bulb size for the interior lighting component located within the rear cargo area. Data for the specified lighting covers the range from 2022 through 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 Type	Shop
2022-2024	DE3423	Check Price

Bulb Specifications

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

Other Locations

Additional Notes

The DE3423 is a festoon-style bulb, meaning it is cylindrical in shape with flat metal contacts at each end rather than a screw or bayonet base. This contact style requires a holder that grips both ends of the bulb.
The DE3423 operates at 12 volts, which is consistent with standard 12-volt automotive electrical systems.
At 41mm in length, the DE3423 falls within the mid-range of common festoon bulb sizes. Festoon bulbs are available in several lengths, and substituting a bulb of a different length risks poor contact or fitment failure within the housing.
The DE3423 carries an ANSI designation, indicating it conforms to a standardized specification recognized in the United States and Canada. This means bulbs from different manufacturers sharing the DE3423 designation are expected to be physically and electrically equivalent.
The Infiniti QX55 uses the DE3423 for the trunk across the 2022-2024 model years, representing the full production span covered by these specifications.