Mercedes-Benz CLK500 License Plate Bulb Size

The Mercedes-Benz CLK500 license plate light requires a bulb with the unique size of DE3423 for proper installation. Available data for the specified component covers the range from 2003 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
2003-2006	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 Mercedes-Benz CLK500 uses the DE3423 bulb for the license plate position across the 2003-2006 model years.
The DE3423 is a festoon-type bulb, meaning it is cylindrical in shape with metal contacts at each end rather than a screw or bayonet base.
The DE3423 has a rated length of 41mm, which is a standard festoon size found across a wide range of vehicle applications.
The bulb operates at 12 volts, consistent with the standard electrical systems used in passenger vehicles.
The DE3423 carries ANSI designation, indicating it meets standardized performance and physical specifications recognized in both the United States and Canada.
Because the DE3423 is an ANSI-standardized festoon bulb, other festoon bulbs of the same 41mm length and end-cap contact type are generally considered interchangeable, provided the voltage rating matches.