Audi R8 Turn Signal Bulb Size

The Audi R8 front turn signal bulb size measures 12496 and PY24WNA, with the bulb specifications applying to vehicles manufactured during the 2008 to 2015 production period. The replacement chart contains bulb size data corresponding to vehicle production years within this range.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Turn Signal

Years	Bulb Size
2015	12496
2008-2012	PY24WNA (With HID Headlamps)

Bulb Specifications

Description	Bulb Size
Philips/Osram part number. Halogen bulb, specialty application. 12V.	12496
ANSI standard (US & Canada). Amber variant of ECE PY24W with PGU20-4 base. 12V, 24W.	PY24WNA

Other Locations

Additional Notes

The PY24WNA is the most frequently specified front turn signal bulb for the Audi R8, covering the 2008-2012 model years under the condition that HID headlamps are fitted.
PY24WNA follows the ANSI standard applicable in the United States and Canada, and it is the amber-output variant of the ECE-rated PY24W bulb, operating at 12V with a 24W output.
The PY24WNA uses a PGU20-4 base, which is a proprietary wedge-style base type. Bulbs with differing base configurations are not interchangeable with this fitment.
The 2015 Audi R8 front turn signal uses the 12496, a Philips/Osram part number designating a 12V halogen bulb intended for specialty automotive applications.
Because the 12496 is identified by a manufacturer part number rather than an ANSI or ECE designation, cross-referencing to equivalent types requires confirmation against Philips or Osram compatibility data.
The HID headlamp condition attached to the 2008-2012 PY24WNA entries indicates that this bulb size applies specifically to vehicles equipped with that headlamp technology, and a different fitment may exist for non-HID configurations.