D1S HID bulbs, Philips D1S HID, Osram D1S HID,

We carry a full line of High Quality D1S bulbs including Philips D1S, Osram D1S, Nokya D1S, GE D1S and as well as several other brands of D1S HID bulbs that are direct replacments for all factory and aftermarket D1S bulbs. Replacing your old D1S bulbs will improve light output significantly. D1S HID bulbs slowly lose brightness over time and can lose as much as 75% of their brightness over the D1S bulbs lifetime, so replacing your factory D1S HID bulbs after about 4 to 5 years of use is highly recommended to maintain good light output.