Mercedes-Benz C220 Dome Light Bulb Size

The Mercedes-Benz C220 dome light requires a 6411 bulb size for the interior lighting system. Data for the specified component covers the range from 1994 to 1996.

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
1994-1996	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 C220 uses the 6411 bulb for the dome light across the 1994-1996 model years.
The 6411 is an ANSI-standardized bulb designation, meaning it conforms to a defined set of electrical and physical specifications recognized across the United States and Canada.
The 6411 is a festoon-type bulb, which is a cylindrical lamp that mounts by pressing its two end caps into spring clips rather than using a screw or bayonet socket.
The bulb measures 36mm in length, which is the end-to-end span relevant to festoon clip fitment. Installing a festoon bulb of a different length risks poor contact or failure to seat in the housing.
The 6411 uses an SV8.5 base, a designation that refers to the 8.5mm width of the metal end caps on the festoon body. A bulb with a different cap width would not seat correctly in the C220 dome light socket.
The bulb operates at 12 volts, consistent with standard automotive electrical systems.
The 6411 is rated at 5 watts, placing it in the low-wattage range typical of interior courtesy lighting where heat output and current draw are kept minimal.
Because the 6411 is an ANSI-coded festoon bulb, any replacement carrying the same 6411 designation from different manufacturers is expected to share the same voltage, wattage, base type, and length, making cross-brand substitution straightforward within that standard.