Had to replace the rear turn signal bulb on my 2012RT-S. The OEM part# is: Philips 12496. The odd thing about this bulb is that the mounting prongs are not at 12 and 6 o'clock but instead are at 12 and 5 o'clock. I found replacement bulbs at NAPA Auto Parts part#: 17638NA at a cost of $2.29. These bulbs fit the rear turn light on certain BMW and Audi models. Hope this helps someone!