Mercedes-Benz G55 AMG License Plate Bulb Size

The Mercedes-Benz G55 AMG license plate light requires a DE3423 bulb size for proper installation and function within the rear illumination housing. Available data for the specified vehicle covers the time period from 2003 to 2011.

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
2003-2011	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 G55 AMG uses the DE3423 bulb for the license plate position across all model years listed, spanning 2003-2011.
The DE3423 is a festoon-type bulb, meaning it is cylindrical in shape with flat metal contacts at each end rather than a screw or bayonet base.
Festoon bulbs are held in place by spring-loaded clips within the housing, with electrical contact made through the end caps on both terminals.
The DE3423 has a specified length of 41mm, which is a standard festoon size also commonly referenced as the 41mm festoon in aftermarket catalogs.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles.
The DE3423 designation follows ANSI standards applicable to the United States and Canada, indicating the bulb meets regulated performance and dimensional criteria for those markets.
Because the same bulb size applies uniformly to the G55 AMG across the entire 2003-2011 span, no year-specific fitment distinctions exist within this range for the license plate position.
When replacing the DE3423 with an LED alternative, the 41mm festoon format and end-cap contact configuration must be matched to ensure proper fitment within the original housing.