Porsche Boxster Map Light Bulb Size

The Porsche Boxster map light utilizes a 12961 bulb size for illumination within the interior cabin area of the vehicle. Available information covers the specific range of production from 1997 through 2012.

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
1997-2012	12961

Bulb Specifications

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

Other Locations

Additional Notes

The Porsche Boxster uses the 12961 bulb size for the map light across all model years from 1997 to 2012.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor with a W2.1x9.5d base.
The T10 designation refers to a tubular bulb approximately 10mm wide, commonly used in low-intensity interior lighting applications such as map lights, dome lights, and instrument panel illumination.
The W2.1x9.5d base specification describes a wedge-type base with a 2.1mm wire width and a 9.5mm insertion depth, which determines physical fitment into the socket.
The 12961 bulb operates at 12 volts and 5 watts, placing it in the low-wattage range typical of interior courtesy and reading lights in passenger vehicles.
The W2.1x9.5d base is a standardized wedge format, meaning aftermarket or OEM-equivalent T10 bulbs sharing this base type are generally interchangeable with the 12961 in the Porsche Boxster map light socket.
When substituting bulbs, wattage should remain at or near 5W, as exceeding the original rating risks heat damage to the socket or surrounding trim materials.
The uninterrupted use of the same bulb specification across the full 1997-2012 production span of the Boxster indicates a consistent map light socket design throughout that generation range.