Volkswagen Phaeton License Plate Bulb Size

The Volkswagen Phaeton license plate light requires a DE3423 bulb size for proper installation and function. Data for the specific component covers the range from 2004 to 2006.

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
2004-2006	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 Volkswagen Phaeton uses the DE3423 bulb for its license plate lighting across the 2004-2006 model years.
The DE3423 is classified as a festoon bulb, meaning it is cylindrical in shape and makes electrical contact through metal caps at each end rather than through a base socket or pins.
The DE3423 operates at 12 volts, which is consistent with standard automotive electrical systems.
The bulb measures 41mm in length, a specification that is critical for fitment, as festoon bulbs must physically span the contact points within the housing to complete the circuit.
The DE3423 designation follows ANSI standards recognized in both the United States and Canada, meaning the bulb conforms to a defined set of performance and dimensional requirements within those markets.
Because festoon bulbs rely on end-cap contact rather than a keyed base, substitution with another festoon bulb of a different length risks poor contact or failure to seat correctly in the Phaeton's license plate housing.