Philips Xenon Gas Discharge Lamps
Original Equipment/ Manufacturer (OE/OEM) for every automaker offering HID Xenon vehicle headlights.

D2R / D2S Xenon HID bulb made in Germany. Exact (same as dealer/automaker/factory stock/OE/OEM) replacement for reflector-type HID headlamps (Acura, Lexus, Mercedes, Toyota) originally calling for D2R bulbs and projector-type HID headlamps (Audi, BMW, newer model 2006+ offering HID) calling for D2S bulbs

It is best to replace these bulbs in pairs, because as they age, the color of light changes. Replacing only one bulb may result in two headlamps to emit light of slightly different color.  Also if one lamp has burned out/reach end of life span, the other lamp is also near its end.
** Buy from suvlights- an authorized dealer to guarantee current production batch product and ensures product is new and not used or from unknown sources such as salvaged from junk yards then sold on ebay. 
*Note: HID Xenon bulbs require electronic control gear (igniter & ballast) to operate. These Philips bulbs are meant for light housings using unmodified OE (Original Equipment) D2S/D2R HID bulbs.

Philips 4100K D2S & 4000K D2R
Philips 6000K D2S & D2R
Philips 4100K VS Vestec 8000K   Front View of a BMW with Vestec 8000K
Lexus GS 300/400 Factory HID with Vestec 8000K Bulb