The Aston Martin V12 Vantage high beam headlight uses an H9 bulb size, while low beam headlight applications require either H11 or D1S bulb sizes. The replacement chart covers vehicle production years spanning 2010 to 2017 with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H9 bulb is the sole high beam headlight type used across all specified model years of the Aston Martin V12 Vantage, covering the 2010-2013 and 2015-2017 production years.
The H9 is a halogen bulb operating at 65 watts with a PGJ19-5 base. It belongs to the H-series family but is not interchangeable with the closely related H11 bulb, despite sharing a similar physical form, because the locking tab is positioned differently to prevent incorrect installation.
The Aston Martin V12 Vantage low beam headlight accommodates two distinct bulb types depending on the headlamp system fitted to the vehicle: H11 for halogen capsule headlamps and D1S for HID headlamps. This distinction applies across all specified model years from 2010-2013 and 2015-2017.
The H11 is a halogen bulb rated at 55 watts with a PGJ19-2 base. It is a single-filament bulb used exclusively for low beam in this application and is not cross-compatible with H9 despite both belonging to the PGJ19 base family.
The D1S is a high-intensity discharge (HID) bulb that requires a built-in igniter and operates at a much higher voltage than halogen types, typically striking an arc at several thousand volts before settling at a lower operating voltage. It uses a quartz arc tube rather than a tungsten filament.
Because the Aston Martin V12 Vantage low beam position accepts either H11 or D1S depending on headlamp type, installing the incorrect bulb is not a matter of physical fit alone. The D1S system relies on a ballast and igniter assembly that is absent in halogen-equipped vehicles, making the two configurations electrically and mechanically incompatible.
The D1S bulb standard specifies a 35-watt operating power, which is lower than the 55-watt H11 halogen rating, yet HID systems produce significantly greater luminous output due to the higher efficiency of gas-discharge technology.
The H9 high beam bulb and the H11 low beam bulb share the same PGJ19 base family but carry different wattage ratings and tab configurations. Substituting one for the other in the V12 Vantage headlamp housing would result in an improper fit and potential electrical mismatch.