Mercedes-Benz CLS63 AMG License Plate Bulb Size

Mercedes-Benz CLS63 AMG license plate bulb utilizes a DE3423 size specification. The replacement chart covers 2007 to 2011 production years with corresponding bulb size data.

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
2007-2011	DE3423	Check Price

Bulb Specifications

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

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Additional Notes

The Mercedes-Benz CLS63 AMG uses the DE3423 bulb size for the license plate position across the 2007-2011 model years.
The DE3423 is a festoon-type bulb, meaning it is cylindrical in shape with metal contacts at each end rather than a base socket, and it seats by pressing between two spring clips within the lamp housing.
The DE3423 operates at 12 volts, which is consistent with the standard electrical system voltage found in passenger vehicles.
The bulb has a 41mm length, which is a critical fitment factor, as festoon bulbs must match the exact length of the housing to make proper contact at both ends.
The DE3423 carries ANSI designation, indicating it conforms to standardized specifications recognized in the United States and Canada.
End-cap contacts on the DE3423 are the points through which electrical current passes, and their condition directly affects whether the bulb seats and illuminates correctly in the housing.
Because festoon bulbs are sized by length, substituting a bulb of a different length, even one that appears physically similar, risks poor contact or failure to fit within the CLS63 AMG license plate lamp housing.