Yellow sticker just means it has been replaced somewhat recently; the original ones that came on the car had a white sticker; no clue about where or whom or how the throttle body is rebuilt; I never delved into it that far. I do know that one customer, formerly of the dealer, more currently of ours, had the throttle body replaced on their 2000 model at the dealer a couple of years back. The sticker on this one was white...so maybe the yellow stickered ones are the "better" ones you speak of....I dunno...

Chris