Jaguar XKR Dome Light Bulb Size

The Jaguar XKR dome light requires a 6411 bulb size for proper installation and function within the interior overhead lighting housing. Available data covers the period from 2003 through 2015 for the specified vehicle and component.

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
2003-2015	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 Jaguar XKR uses the 6411 bulb size for the dome light across all model years listed in the specifications, spanning 2003-2015.
The 6411 is a festoon-style bulb, meaning it is cylindrical in shape and mounts by pressing its end caps into spring clips rather than using a screw or bayonet base.
The 6411 bulb operates on 12 volts at 5 watts, which is consistent with standard automotive interior lighting power requirements.
The 6411 carries an ANSI designation, indicating it conforms to a standardized specification recognized in the United States and Canada.
The bulb uses an SV8.5 base, a designation that refers to the end-cap style of festoon bulbs with an 8.5mm cap width.
The 6411 bulb has a 36mm length, which is a critical fitment factor, as festoon bulbs must match the exact span of the fixture's mounting clips to seat correctly.
Because the 6411 designation is an ANSI standard, bulbs from different manufacturers carrying the same designation are generally interchangeable, provided the 36mm length and SV8.5 base are maintained.
Festoon bulbs of the same voltage and wattage but different lengths, such as 31mm or 41mm variants, are not compatible with fixtures sized for the 36mm 6411, as the end caps would not reach or would over-compress the spring clips.