BMW ActiveHybrid 3 Dome Light Bulb Size

The BMW ActiveHybrid 3 dome light uses a 12961 bulb size for this interior lighting component. The replacement chart covers vehicle production years from 2013 to 2015 with corresponding bulb size specifications.

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
2013-2015	12961

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

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Additional Notes

The BMW ActiveHybrid 3 uses the 12961 bulb for the dome light across the 2013-2015 model years.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, operating at 12 volts and 5 watts.
The T10 designation refers to a tubular bulb roughly 10mm wide, commonly found in low-current interior lighting applications such as dome and courtesy lights.
The W2.1x9.5d base is a wedge-type base where the bulb's glass envelope itself acts as the retention mechanism, requiring no separate metal shell or bayonet pins.
At 5 watts, the 12961 draws minimal current, which is typical for interior cabin lighting where prolonged use without the engine running is a practical consideration.
The W2.1x9.5d base specification is a precise fitment standard, meaning substitutions with physically similar T10 bulbs carrying a different base code may not seat correctly in the BMW ActiveHybrid 3 dome light socket.