Volvo 264 Dome Light Bulb Size

The Volvo 264 dome light requires bulb sizes 6411, DE3423, and 212-2 depending on the specific application. Available data for the lighting components covers the period from 1976 to 1982.

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
1981-1982	6411
1980	DE3423
1978-1979	212-2
1976-1977	DE3423

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6411
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V.	DE3423
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	212-2

Other Locations

Additional Notes

All dome light bulb sizes listed for the Volvo 264 across its 1976-1982 model years follow ANSI standards applicable to the US and Canadian markets.
Every bulb type specified for the Volvo 264 dome light is a festoon-style bulb, a form factor characterized by a cylindrical tube with contacts at each end, designed to seat in spring-clip or end-cap holders.
The 6411 bulb, fitted to the 1981-1982 model years, is a 36mm festoon with an SV8.5 base, rated at 12V and 5W.
The SV8.5 base type refers to a single-contact festoon base with an 8.5mm cap, where the electrical contact is made through metal end caps that press against spring clips in the housing.
The DE3423 bulb, used in the 1976-1977 and 1980 model years, is a 41mm festoon rated at 12V and relies on end-cap contacts rather than an SV8.5 base.
The 212-2 bulb, fitted to the 1978-1979 model years, shares the 41mm length of the DE3423 but uses an SV8.5 base and carries a significantly higher wattage rating of 12W.
Although the DE3423 and 212-2 bulbs share the same 41mm length, their differing base types and wattage ratings make them non-interchangeable despite the physical similarity in size.
The 6411 at 36mm is shorter than both the DE3423 and 212-2 at 41mm, meaning fitment across different model years is not interchangeable without accounting for both length and base type.
The wattage difference between the 5W 6411 and the 12W 212-2 reflects a substantial difference in power draw, which is relevant to socket and circuit compatibility within the dome light housing.