Mercedes-Benz SLK32 AMG License Plate Bulb Size

The Mercedes-Benz SLK32 AMG uses a DE3423 bulb for the license plate lighting area to provide illumination for the rear vehicle identification tag. Data for the specific bulb requirements covers the period from 2002 through 2004.

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
2002-2004	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 used across all three model years of the Mercedes-Benz SLK32 AMG covered in these specifications, spanning 2002-2004.
The DE3423 follows the ANSI standard, meaning it conforms to the electrical and physical specifications recognized in the United States and Canada.
The DE3423 is a festoon-type bulb, a cylindrical form factor that seats between two spring-loaded end caps rather than inserting into a socket with a base pin or bayonet fitting.
The bulb measures 41mm in length, which is the critical fitment value for festoon bulbs, as the housing retains the bulb by tension against its end caps.
Contact is made through the end caps at each terminal of the bulb, a design that distinguishes it from wedge-base or bayonet-base alternatives.
The DE3423 operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles of this type.
Because festoon bulbs are retained by length rather than by a keyed base, substituting a festoon bulb of a different length risks poor contact or failure to seat correctly in the housing.