Mercedes-Benz C230 License Plate Bulb Size

The Mercedes-Benz C230 uses a DE3423 bulb for the license plate light location. Available information covers the specific time range from 1997 through 2007.

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 Size
2002-2007	DE3423
1997-2000	DE3423

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V.	DE3423

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Additional Notes

The Mercedes-Benz C230 uses the DE3423 bulb for the license plate position across all listed model years from 1997 to 2007, with no variation in bulb size across that span.
The DE3423 is a festoon-type bulb, meaning it is cylindrical in shape and mounts by pressing between two spring-loaded end contacts rather than using a twist or bayonet 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.
Electrical operation is rated at 12 volts, consistent with the standard automotive electrical systems found in the listed C230 model years.
The DE3423 designation follows ANSI standards applicable in the United States and Canada, meaning the specification is defined within the North American bulb classification system.
End-cap contacts on the DE3423 refer to metal caps at both ends of the bulb body, which serve as the electrical terminals when the bulb is seated in a festoon-style holder.
Festoon bulbs of different lengths are not interchangeable even when voltage ratings match, as an incorrect length will prevent proper contact or cause the bulb to fit loosely within the housing.