Mercedes-Benz CLK500 Dome Light Bulb Size

The Mercedes-Benz CLK500 dome light requires a bulb size of 6411 for proper installation and function within the interior lighting system. Data for the specified component covers the range from 2003 to 2006.

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
2003-2006	6411

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6411

Other Locations

Additional Notes

The Mercedes-Benz CLK500 uses the 6411 bulb for the dome light across the 2003-2006 model years.
The 6411 is a festoon-type bulb, meaning it is cylindrical in shape and makes contact at both ends rather than through a traditional screw or pin base.
The 6411 bulb follows the ANSI standard, which applies to the United States and Canada markets.
The bulb measures 36mm in length, which is a defining fitment factor for festoon bulbs, as installing an incorrect length can result in poor contact or physical incompatibility with the housing.
The 6411 uses an SV8.5 base, a single-contact festoon base with an 8.5mm cap width at each end.
The bulb operates at 12 volts and draws 5 watts, consistent with low-power interior lighting applications in passenger vehicles.