Volvo V70 License Plate Bulb Size

The Volvo V70 license plate light uses bulb sizes DE3423 and 12961 for illumination. Data for the specified lighting components covers the range from 1998 through 2010.

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
2007-2010	DE3423	Check Price
1998-2006	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 V70 license plate bulb specifications cover model years 1998-2010, with two distinct bulb types used across that span.
The DE3423 is an ANSI-standardized festoon bulb rated at 12V, measuring 41mm in length and making electrical contact through end-cap terminals rather than a wedge or pin base.
The 12961 carries a Philips part number and belongs to the T10 miniature wedge family, using a W2.1x9.5d base with a 12V, 5W rating.
The Volvo V70 (1998-2006) uses the 12961 T10 wedge bulb for the license plate position, while the 2007-2010 model years require the DE3423 festoon bulb instead.
Because the DE3423 festoon and the 12961 wedge use fundamentally different base types, the two bulbs are not interchangeable with each other.
The W2.1x9.5d base designation on the 12961 describes a specific wedge socket geometry, meaning only bulbs sharing that base standard are physically compatible with the 1998-2006 V70 license plate housing.
The DE3423 festoon format is recognized under ANSI standards in both the United States and Canada, indicating broad availability across North American retail and wholesale channels.
A change in bulb type occurs between the 2006 and 2007 V70 model years, reflecting a shift from a wedge-base socket to a festoon-style housing in the license plate lamp assembly.