Jaguar E-Pace Dome Light Bulb Size

The Jaguar E-Pace dome light requires bulb size DE3423 or 6411 depending on the specific version required for the interior lighting. Data for the bulb sizes covers the range from 2018 through 2021.

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
2021	DE3423
2018-2020	6411

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V.	DE3423
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6411

Other Locations

Additional Notes

The Jaguar E-Pace dome light uses two distinct festoon bulb types across its model years: the DE3423 for the 2021 model year and the 6411 for the 2018-2020 model years.
Both the DE3423 and 6411 are festoon-type bulbs, meaning they are cylindrical in shape and mount horizontally between two contact points within the dome light housing.
The DE3423 is an ANSI-standardized bulb rated at 12V and measures 41mm in length with end-cap contacts, which are metal caps at each end of the bulb body that complete the electrical circuit.
The 6411 is also an ANSI-standardized 12V festoon bulb, rated at 5W, with a 36mm length and an SV8.5 base, a designation that refers to a specific festoon base type with a nominal 8.5mm body width.
The DE3423 and 6411 differ in both length and base type, with the DE3423 being 5mm longer and using end-cap contacts rather than the SV8.5 base found on the 6411, making the two bulbs non-interchangeable despite both being festoon designs.
The shift from the 6411 to the DE3423 between the 2020 and 2021 Jaguar E-Pace model years represents a change in socket configuration, as the differing base types require physically distinct housings.
Both bulb types conform to ANSI standards applicable in the United States and Canada, indicating consistent electrical and dimensional specifications within those markets.