BMW Z3 License Plate Bulb Size

The BMW Z3 license plate light requires a bulb size of 12961 for proper installation and function. Data for the specific bulb size covers the range of 1996 to 1998.

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
1996-1998	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 Z3 uses the 12961 bulb for its license plate light across the 1996-1998 model years.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, which is one of the most widely used bulb types in automotive auxiliary lighting applications.
The T10 designation refers to the bulb's tubular shape with a width of approximately 10 millimeters, a standard sizing convention in miniature automotive bulbs.
The bulb operates at 12 volts and 5 watts, consistent with low-draw auxiliary functions such as license plate illumination.
The base type is W2.1x9.5d, a wedge-style base that relies on tension from the socket rather than a bayonet or screw mechanism to maintain contact.
The W2.1x9.5d base specification is a critical fitment detail, as wedge bases are not universally interchangeable despite similar physical profiles across different T10-style bulbs.