IIRC, they're SuperFlux with Audi's. These LEDs are roughly square with 4 leads and can typically run slightly higher current than 5mm LEDs. These are the types of LEDs I requested CiNcity to use for my head lights.
The Luxeon K2 is in my 194 parking light (also trunk, dome, and license plate lights).
Great job with your head lights! I had them swap out the amber LED for a white one with my head lights. Reflectors stock, but painted black underneath for a "tinted" look. :-)
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