This is a A-R135568 Belt, Fan Drive PN: R135568Main Description As Following : A-R135568 Belt, Fan Drive PN: R135568 Found in Section & Models : Belts > Belts: Alt, Fan, Steering, Water Pump, John Deere WHEEL LOADER: 644H (80 AMP Alternator with or without A/C), John Deere WHEEL LOADER: 744H Associated Items : New Also This is An Aftermarket Product And : 67.5" 8 Rib K Poly Length: 67.5" Material: Polyester Cord Number Of Ribs: 8 Outside Length: 68.13" Pitch Length: 67.5" Thickness: 0.18" Width: 8 Rib