Volvo C70 License Plate Bulb Size

The Volvo C70 license plate component utilizes DE3423 and 12961 bulb sizes according to the provided technical data for the specific vehicle lighting system. Available information covers the time period from 1998 through 2013 for the specified automotive lighting application.

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
2006-2013	DE3423
2003-2004	DE3423
2001-2002	12961
1998	DE3423

Bulb Specifications

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

Other Locations

Additional Notes

The Volvo C70 license plate bulb specification calls for one of two bulb types across its model years: the DE3423 festoon bulb or the 12961 miniature wedge bulb, with the DE3423 being the more widely specified of the two.
The DE3423 is an ANSI-standard festoon bulb rated at 12 volts, measuring 41mm in length and making electrical contact through end-cap terminals at each end 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 12 volts and 5 watts.
The festoon and wedge bulb types use fundamentally different base designs and are not interchangeable. The DE3423 relies on end-cap contacts, while the 12961 uses a wedge-style base that friction-fits into its socket.
The Volvo C70 uses the DE3423 festoon bulb for the 2003-2004 and 2006-2013 model years, as well as the 1998 model year.
The 12961 wedge bulb applies to the 2001-2002 model years of the C70, representing the only years in the specification where a wedge-type bulb is required rather than a festoon type.
Both bulb types share a 12-volt operating voltage, making them compatible with standard automotive electrical systems, though their wattage and socket configurations differ.
The W2.1x9.5d base designation on the 12961 refers to a standardized wedge base width and pin spacing, which determines physical socket compatibility independently of voltage or wattage ratings.