The Jaguar XKR turn signal uses a PY21W bulb size for the front and rear lighting components. Data for the specific bulb requirements covers the period from 2000 through 2006.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
PY21W is the most frequently specified bulb across the Jaguar XKR turn signal positions, appearing in the Front Outer Turn Signal, portions of the Front Turn Signal, and the Rear Turn Signal across multiple model years.
The PY21W bulb follows the ECE standard used in European and worldwide markets. It is a single-filament amber bulb with a BAU15s bayonet base, rated at 12V and 21W.
The BAU15s bayonet base on the PY21W is offset, meaning it is not interchangeable with the more common BA15s base found on other single-filament bulbs. Substituting an incorrect base type will prevent proper seating in the socket.
The 12496 is a Philips/Osram part number for a 12V halogen bulb intended for specialty applications. It appears across the Front Turn Signal position on the Jaguar XKR for model years 2002-2006, 2010-2015, and select earlier years, as well as the Rear Turn Signal for several years.
The 3457NA and 3357NA bulbs follow the ANSI standard used in the United States and Canada. Both feature natural amber glass in a T25 wedge form and operate at 12V.
The 3457NA is a dual-filament bulb rated at 27W and 7W, while the 3357NA is a single-filament bulb rated at 27W. Despite sharing the same T25 wedge form and natural amber glass, these two types are not functionally identical and serve different circuit configurations.
The Front Inner Turn Signal on the Jaguar XKR uses 3457NA for the 2007 and 2009 model years, while the 2008 model year uses the 3357NA. The difference between a dual-filament and single-filament specification in consecutive years indicates a circuit change between those model years.
The Front Turn Signal position on the Jaguar XKR shows a shift from PY21W in the 2000-2001 model years to 12496 in 2002-2004, then back to PY21W in 2005, and again to 12496 from 2006 onward through 2015, reflecting multiple specification changes across the production run.
The Rear Turn Signal on the Jaguar XKR specifies 12496 for 2001-2007 and 2009, while PY21W is specified for 2000, 2008, and 2010-2015. The 2008 and 2009 model years differ from each other in this position, making year-specific verification necessary for that generation.
Because the XKR uses both ANSI-standard and ECE-standard bulbs depending on the position and model year, the regulatory standard of a replacement bulb is a relevant factor in confirming fitment, not only the wattage or physical form.