Genuine Hoover Serpentine Style Belt part number 38528050 or 91001137.

Fits Hoover Windtunnel 2 model numbers U8311900 and UH30065.

This is the serpentine style belt that goes from the motor shaft to the pulley. Belt 38528034 goes from the pulley to the brush roll. I have a listing of the 38528034 belt individually and in combination with this belt in sets. I also have the brush roll for the two models listed. 

Please ask if you have any questions. 

THIS DOES NOT FIT ALL WINDTUNNEL MODELS.