Product review (1 stars): Sent the wrong belt which could sort of work until it breaks.  Beware!
The belt I was sent is NOT 6602-001655, which is a 5-rib, 4-groove belt.  The bag has a sticker on it that says 6602-001655, but the belt itself says 341241, which is a Whirlpool part and has a 4-rib, 3-groove design.  It's the same length so it could theoretically be installed and would probably work, but with the grooves not lining up and fitting the pulley correctly the pulley would probably slip and over time the belt would get sliced by the pulley and break.  Those of you who have had early failures may have in fact gotten the wrong part and that caused the problem.  Given how close this belt is with just the number of ribs being off, I would imagine it was intentionally substituted.  Very frustrating as I now have to send it back and order another belt and my dryer still doesn't work.