The Jaguar Super V8 front inner turn signal bulb uses a PY21W size, with the front outer and rear turn signals also utilizing the 12496 bulb size. The replacement chart covers 2005 through 2009 model years 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 two bulb types specified across all turn signal positions on the Jaguar Super V8 are the PY21W and the 12496, both rated at 12 volts.
The PY21W is an ECE-standard single-filament amber bulb rated at 21 watts, fitted with a BAU15s bayonet base, and is used in markets worldwide including Europe.
The BAU15s base on the PY21W is an offset-pin bayonet mount, which physically prevents substitution with the more common BA15s-based bulbs that share a similar appearance.
The 12496 is a Philips and Osram part number designating a halogen bulb for specialty automotive applications, also operating at 12 volts.
For the front inner turn signal on the Jaguar Super V8, the 2007 and 2009 model years use the PY21W, while the 2008 model year uses the 12496.
The front outer turn signal position for the 2005-2006 model years specifies the PY21W, while the front turn signal position for those same years specifies the 12496, indicating these are distinct housings requiring different bulbs.
The rear turn signal position uses the 12496 for the 2005 and 2007-2009 model years, whereas the 2006 model year specifies the PY21W for that same position.
The 2006 model year is notable in that it carries both a front outer turn signal and a separate front turn signal designation, with the PY21W assigned to the outer position and the 12496 assigned to the general front position.
Because the PY21W and 12496 are not confirmed to share the same base type, direct interchangeability between the two cannot be assumed even where wattage or voltage ratings may overlap.
The variation in specified bulb types across model years for the same position, such as the rear turn signal, indicates that fitment should be confirmed against the specific model year rather than assumed consistent across the Super V8 range.