I have a 2003 G35 sedan. Headlight lens stayed yellow. New hid housing cost 479 dollars.
I solve my problem by buying a halogen housing. Heating the housing in the oven at 350 for six minutes. Must put housing on a piece of wool. If you use anything metal will damage the plastic housing. Must scrape one side to get the glue off so you can open the case. Do the same with your old one and just replace the lens . Must reheat to get the new lens on and then reseal the housing. I same over 400 dollars doing this. Hope this help out all with a G 35.