Volvo XC60 Turn Signal Bulb Size

Additional Notes

• The Volvo XC60 front turn signal draws from three distinct bulb types across its 2010-2018 model range: the 12174SV, the PY21W, and the 12496, none of which are directly interchangeable due to differences in base type, wattage, and coating.
• The 12174SV is the most frequently specified bulb in these listings, covering the Volvo XC60 from 2014 through 2018. It is a Philips SilverVision part number denoting a 12V halogen bulb with an enhanced reflective coating applied to the glass envelope.
• The 2018 model year carries an additional fitment condition for the 12174SV, specifying compatibility only with halogen capsule headlamp configurations, which indicates that alternative headlamp systems on that year may require a different bulb.
• The PY21W is an ECE-standard bulb type used in the 2011 and 2013 model years. It operates at 12V and 21W, uses a BAU15s offset bayonet base, and produces amber light natively, a characteristic relevant to turn signal applications in markets requiring amber output.
• The BAU15s base of the PY21W features an offset pin arrangement that physically prevents installation of standard BA15s-based bulbs, making base type a critical factor when sourcing a replacement for 2011 and 2013 fitments.
• The 12496 appears in the 2010 and 2012 model years. It is a Philips and Osram part number for a 12V halogen bulb designated for specialty applications, and it is not equivalent to the PY21W or the 12174SV despite all three being 12V rated.
• The alternating pattern of bulb types across 2010, 2011, 2012, and 2013 reflects that the 12496 and PY21W are not interchangeable, and substituting one for the other in those model years would represent an incorrect fitment.