Replacement HID OR Xenon Ballast - is responsible for supplying power to your headlight's bulb. Overtime your HID Ballast can fail resulting in a headlight that flickers or does not turn on at all. Every ballast is designed to connect directly to your vehicle and requires NO programming or coding.
Compatible Replacement for Audi, Cadillac DTS, Lincoln, Saab, Saturn & Volvo S40 Vehicles - 2008 - 2009 A4, S4 Cabrio | 2005 - 2008 S4, A4, RS4 Saloon & Wagon | 2006 - 2008 DTS | 2008 MKX | & more. See below for the full vehicle list. This WILL NOT FIT models that have AFS or Curved Lighting.
Replaces Part#307 329 115, 8e0 907 391 b, 1 307 329 098 - Each of your vehicle's headlights has its own ballast. These ballasts are commonly mounted either on the back or on the bottom of the headlights. While the HID Xenon Ballasts do commonly fail so can your factory headlight bulb.
OEM Fit, Quality, Finish - This AA Ignition HID Xenon Ballast is a direct replacement for the ballast on popular A4, S4, RS4, DTS, MKX, C350, Outlook, or S40 vehicles including models with years 04, 05, 06, 07, 08, 09, 10, 11.
Lifetime Warranty - This HID Xenon Ballast comes complete with a lifetime warranty. If the ballast ever fails simply contact us for a replacement. Please make sure that the part you are replacing looks exactly like the one pictured. Save hundreds off of dealer prices by replacing the part yourself.