Rolls-Royce Phantom License Plate Bulb Size

The Rolls-Royce Phantom license plate light requires a 12961 bulb size for proper illumination of the rear vehicle identification area. Data for the specified component covers the range from 2004 through 2007.

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
2004-2007	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 Rolls-Royce Phantom uses the 12961 bulb for its license plate lighting across the 2004-2007 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 the number indicating its width in tenths of an inch, making it a compact unit suited to low-profile housings such as license plate lamp assemblies.
The base type is W2.1x9.5d, a wedge-style base that relies on spring tension from the socket rather than a bayonet or screw mechanism to maintain contact, which is a standard fitment method for T10 bulbs.
The bulb operates at 12 volts and draws 5 watts, both of which are standard values for automotive license plate lamps running on a conventional 12V vehicle electrical system.
Because the 12961 is a Philips-specific part number, equivalent bulbs from other manufacturers are typically cross-referenced under designations such as W5W or 168, provided they share the same T10 form factor, W2.1x9.5d base, 12V rating, and 5W output.
The consistent fitment of the 12961 across all four listed model years indicates that the license plate lamp housing design remained unchanged throughout the 2004-2007 Phantom production span covered by these specifications.