Jaguar X-Type License Plate Bulb Size

The Jaguar X-Type license plate light requires a 12961 bulb size for proper illumination of the rear registration area. Available data for the specified vehicle covers the range from 2002 through 2008.

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 Type	Shop
2002-2008	12961	Check Price

Bulb Specifications

Description	Type	Shop
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961	Check Price

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Additional Notes

The Jaguar X-Type uses the 12961 bulb across all model years from 2002-2008 for the license plate position, making it one of the most consistent single-bulb fitments across a model's full production run.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, which refers to a tubular bulb roughly 10mm in width.
The bulb operates on a 12-volt electrical system and draws 5 watts, placing it in the low-wattage category typical of exterior lighting positions that prioritize longevity over output.
The W2.1x9.5d base designation describes a wedge-type connection where the base width is 2.1mm and the pin spacing is 9.5mm, which determines physical socket compatibility.
The T10 wedge base is a widely used standard in automotive license plate and interior lighting, meaning the 12961 shares its socket type with a broad range of other vehicles, though fitment should always be confirmed against the specific application.
Because the 12961 designation is a Philips-specific part number, equivalent bulbs from other manufacturers are typically cross-referenced by the T10 or W5W designation, which describes the same base type and wattage rating.