Mercedes-Benz SLK280 License Plate Bulb Size

The Mercedes-Benz SLK280 license plate requires a DE3423 bulb size for proper installation and function. Data for the specified lighting component covers the range from 2006 to 2008.

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
2006-2008	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 DE3423 is the license plate bulb type specified for the Mercedes-Benz SLK280 across the 2006-2008 model years.
The DE3423 follows the ANSI standard, which is the recognized electrical component classification system used in the United States and Canada.
As a festoon bulb, the DE3423 is cylindrical in form and mounts by pressing its two flat end-caps against spring contacts within the housing, rather than using a bayonet or wedge base.
The DE3423 has a length of 41mm, which is a critical fitment factor, as festoon bulbs must match the contact spacing of the housing to seat and make electrical contact correctly.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles of this type.
Because festoon bulbs of similar length can carry different part numbers with varying wattage or contact configurations, substitutions should be verified against the DE3423 specification before use in the SLK280.