There is a rubber flap that goes over the radiator. Mine is old, but still looks OK. I have 3 new flaps, from different sources, but the texture differs slightly from stock. My opinion is that I may as well put a new flap on, because the new flaps are much more flexible, but I surely want to keep the stock look. Maybe I'm just lazy, and don't want to remove the sticker.
To help me decide, I'm soaking the sticker in goo-gone, and soaking the old flap in rubber rejuvenator. By tomorrow evening, hopefully there will be a winner.