Audi R8 License Plate Bulb Size

The Audi R8 license plate light requires a DE3423 bulb size for proper installation. Available data for the specified component covers the range from 2008 through 2012.

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
2008-2012	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 Audi R8 uses the DE3423 bulb for the license plate position across the 2008-2012 model years.
The DE3423 is a festoon-type bulb, meaning it is cylindrical in shape and makes electrical contact through metal caps at each end rather than through a base pin or wedge.
The DE3423 operates at 12 volts, which is standard for automotive electrical systems in passenger vehicles.
The bulb has a 41mm length, which is the critical fitment factor for festoon bulbs, as the end-cap contacts must span the fixture's mounting points precisely.
The DE3423 carries an ANSI designation, indicating it conforms to a standardized specification recognized in the United States and Canada.
Because festoon bulbs are sized by length, substituting a festoon bulb of a different length, such as a 36mm or 44mm unit, would result in an improper fit even if the voltage rating matches.