Mercedes-Benz CLK55 AMG License Plate Bulb Size

The Mercedes-Benz CLK55 AMG uses a DE3423 bulb for the license plate illumination area. Data for the specific component covers the period from 2001 through 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
2001-2006	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 DE3423 is the specified license plate bulb for the Mercedes-Benz CLK55 AMG across the 2001-2006 model years.
The DE3423 follows the ANSI standard, which is the recognized bulb classification system used in the United States and Canada.
This bulb is a festoon type, meaning it is cylindrical in form and makes electrical contact through metal caps at both ends rather than through a base socket.
The DE3423 has a length of 41mm, which is a physical fitment specification that determines compatibility with the license plate lamp housing.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles.
Because festoon bulbs rely on end-cap contacts, the fit within the housing depends on the distance between the contact points, making the 41mm length a critical interchangeability factor.
Substituting a festoon bulb of a different length, such as the common 36mm or 44mm variants, would result in an improper fit within the CLK55 AMG license plate housing.