This is a A-RE582500 Tensioner, Belt PN: RE582500Main Description As Following : A-RE582500 Tensioner, Belt PN: RE582500 Found in Section & Models : Transmission & Rear Axle > Brake Related Parts, John Deere ARTICULATED DUMP TRUCK: 370E (Front Engine Drive), John Deere ARTICULATED DUMP TRUCK: 460E (Front Engine Drive), John Deere BACKHOE: 410E (Front Engine Drive), John Deere COMBINE: T550 (Front Engine Drive), John Deere COMBINE: W540 (Front Engine Drive), John Deere COMBINE: W550 (Front Engine Drive), John Deere COTTON PICKER: CP690 (Front Engine Drive), John Deere COTTON PICKER: 7760 (Front Engine Drive), John Deere DOZER: 1050K (Front Engine Drive), John Deere FORAGE HARVESTER: 7280 (Front Engine Drive), John Deere FORAGE HARVESTER: 7380 (Front Engine Drive), John Deere FORAGE HARVESTER: 7480 (Front Engine Drive), John Deere FORAGE HARVESTER: 7580 (Front Engine Drive), John Deere FORAGE HARVESTER: 7780 (Front Engine Drive), John Deere SPRAYER: R4038 (Front Engine Drive), John Deere SPRAYER: R4045 (Front Engine Drive), John Deere SPRAYER: 4930 (Front Engine Drive), John Deere SPRAYER: 4940 (Front Engine Drive), John Deere TRACTOR: 7200R (Auxiliary Drive / Air Brake Air Compressor), John Deere TRACTOR: 7210R (Auxiliary Drive / Air Brake Air Compressor) Associated Items : New Also This is An Aftermarket Product And : Pulley Diameter: 2.956" Replaces: RE243199