BMW 760i Dome Light Bulb Size

The BMW 760i dome light requires bulb size 12961 or DE3423 depending on the specific vehicle configuration. Data for the provided specifications covers the range from 2004 to 2006.

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
2005-2006	12961
2004	DE3423

Bulb Specifications

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

Other Locations

Additional Notes

The BMW 760i uses two distinct bulb types across its 2004-2006 model years for the dome light position: the 12961 and the DE3423.
The 12961 is a Philips part number designation for a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W.
The T10 wedge base format means the bulb is held in place by friction against the socket walls rather than by a bayonet or screw mechanism.
The DE3423 follows the ANSI standard used in the United States and Canada, classifying it as a festoon bulb with a 41mm length and end-cap contacts at both terminals.
Festoon bulbs make electrical contact through metal caps at each end, which distinguishes them physically and electrically from wedge-base types such as the T10.
The 12961 and DE3423 are not interchangeable, as they differ in base type, physical form, and socket design.
The BMW 760i (2005-2006) takes the 12961 bulb for the dome light, while the 2004 model year uses the DE3423.
Both bulb types operate on a 12V electrical system, consistent with standard automotive voltage.