Volvo S80 License Plate Bulb Size

The Volvo S80 license plate light uses DE3423 and 12961 bulb sizes for the exterior illumination of the rear registration area. Available data covers the span from 1999 through 2016 for the specified vehicle components.

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 Type	Shop
2004-2016	DE3423	Check Price
1999-2003	12961	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V.	DE3423	Check Price
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961	Check Price

Other Locations

Additional Notes

The Volvo S80 license plate bulb specifications cover model years 1999-2016, with two distinct bulb types used across that span.
The DE3423 is an ANSI-standardized festoon bulb operating at 12V, with a 41mm length and end-cap contacts that seat into holders at both ends of the bulb body.
The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W.
The Volvo S80 (2004-2016) uses the DE3423 festoon bulb for the license plate position.
Model years 1999-2003 use the 12961 wedge bulb, which has a fundamentally different base type than the DE3423 festoon format.
The DE3423 festoon and the 12961 wedge bulb are not interchangeable, as their mounting systems are mechanically incompatible.
End-cap festoon bulbs such as the DE3423 make electrical contact through metal caps at each end of the glass tube, requiring a spring-clip or socket-style holder.
The W2.1x9.5d base of the 12961 is a wedge-type fitting where the glass envelope itself acts as the retaining element within the socket, without a separate metal base shell.
The DE3423 designation follows ANSI naming conventions recognized across the United States and Canada, making equivalent bulbs from multiple manufacturers available under that same designation.
The 12961 carries a manufacturer-specific part number from Philips, though the underlying T10 wedge format is a widely produced standard type available from various sources.