Aston Martin V12 Vantage License Plate Bulb Size

Additional Notes

• The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, operating at 12 volts with a 5-watt output and fitted with a W2.1x9.5d base.
• The W2.1x9.5d base is a wedge-type connection, meaning the bulb is held in place by tension from the socket rather than by a bayonet or screw mechanism.
• The Aston Martin V12 Vantage uses the 12961 bulb for its license plate lighting across the 2010-2013 and 2015-2017 model years.
• The T10 designation refers to the bulb's tubular envelope, which is approximately 10 millimeters wide, a standard sizing classification used across many automotive lighting applications.
• At 5 watts, the 12961 operates at a low power draw consistent with the minor illumination requirements of license plate lighting.
• The consistent use of a single bulb type across all listed model years of the V12 Vantage indicates a stable socket specification throughout that production period.
• The W2.1x9.5d base type is shared by a wide range of T10 wedge bulbs from multiple manufacturers, though fitment compatibility depends on both the base type and the physical envelope size of any substitute bulb.
• Because the 12961 is a Philips-assigned part number, equivalent bulbs from other manufacturers are typically cross-referenced by their T10 or W5W designation, the latter being the wattage-based international classification for this bulb type.