D1S D1R Ballast 35W Philips Xendrive XLD 988 DOT Mostly used in the automotive world today by manufacturers like Audi, Mercedes Benz, Lexus, and BMW, VW and Porche etc.. Sold individually. Bulbs and Ballasts are non-returnable, non-refundable, so make sure you are ordering the correct part for your car. Bulb or ballast?: see More Details