This listing features one pair error free amber yellow 30W SMD PH24WY LED replacement bulbs for the cars listed in the part compatibility list for front turn signal lights or driving lights. This PH24WY LED bulb is specially designed with two pieces of SMD LED in front with projector lens and eight pieces of SMD LEDs facing the back to better reflect the light inside the turn signal lamp housing. Thanks to this special design, it will appear much brighter than most conventionally designed LED bulbs. Please note that when you are first starting your car's engine, the LED bulbs will faintly strobe or flash a few times due to the onboard computer scan which is completely normal. Fitment: 2008-2012 Audi A4/S4 (For B8 model A4/S4 with OEM HID headlights only) 2009-2012 Audi Q5 (For OEM HID Headlight Only) 2008-2012 Audi R8 2008-2012 Buick Enclave 2009-2013 Cadillac CTS (For OEM HID Headlight Only) 2010-2012 GMC Acadia (For OEM HID Headlight Only) 2010-2012 Lincoln MKZ 2009-2012 Porsche 911 (For 997 model with OEM HID Headlight only) 2008-2009 Saab 9-5 2008-2010 Saturn Outlook