This is a manufacturer replacement product. Part numbers include: 14939, 603907, 607400 Dimensions: 50.75 Inch Length x 1/2 Inch Top Width, Package Includes: 1PCS x 603907 Cogged Belt Compatible with: Hustler Fasttrack 48" ZTR Lawn Tractors and Garden Tractors Compatible with: Hustler Raptor, Raptor Limited, Raptor SD, Raptor SDX Mower Description: This is a manufacturer's replacement product. Parts may differ in appearance but are functionally equivalent to the previous part. Belt Application: Transmission 603907 14939 Pump Drive Belt for Hustler Raptor 54" Deck Zero Turn Garden Lawn Mower Replaces 607400