Mercedes-Benz C43 AMG License Plate Bulb Size

The Mercedes-Benz C43 AMG uses a license plate bulb with a unique size of DE3423. Data for the specific component covers the range from 1998 to 2000.

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
1998-2000	DE3423	Check Price

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

The DE3423 is the license plate bulb size for the Mercedes-Benz C43 AMG across the 1998-2000 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 shape with metal contacts at each end rather than a screw or bayonet base.
The festoon format requires the bulb to be held under spring tension between two contact clips within the housing, which is a common mounting method for license plate lamp assemblies.
The DE3423 has a 41mm length, which is a critical fitment factor, as festoon bulbs of different lengths are not interchangeable even when voltage ratings match.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles of this type.
End-cap contacts on the DE3423 refer to the flat metal surfaces at both ends of the bulb body, which serve as the electrical connection points within the festoon socket.