Mercedes-Benz E400 Dome Light Bulb Size

The Mercedes-Benz E400 dome light requires a 6411 bulb size for proper installation within the interior overhead lighting housing. Data for the specified component covers the period from 2013 through 2016.

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
2013-2016	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 E400 uses the 6411 bulb for the dome light across the 2013-2016 model years.
The 6411 is a festoon-type bulb, meaning it is cylindrical in shape and mounts by pressing between two spring-loaded end caps rather than inserting into a socket.
The 6411 bulb has a 36mm length, which is a critical fitment factor, as festoon bulbs must match the exact length of the housing to seat correctly.
It uses an SV8.5 base designation, which refers to the diameter of the metal end caps on a festoon bulb, in this case 8.5mm.
The 6411 operates at 12 volts and draws 5 watts, placing it in the low-wattage range typical of interior courtesy lighting.
The 6411 designation follows the ANSI standard used in the United States and Canada, which means the bulb specification is defined by a standardized North American classification system.
Because the 6411 is an ANSI-standardized part, replacement bulbs from different manufacturers carrying the same number are expected to share identical physical and electrical characteristics.