Replaces Parts: Replaces for John Deere AM134397, AM141536, AM136787, AM137323 Replaces for Warner 5219-62, 5219-87, 5219-88, 5219-127 Replaces for Xtreme X0383, X0383-K, X0384, X0384-K Fits Models: for John Deere EZtrak Z425 serial no. 0 to 040000 for John Deere EZtrak Z445 serial no. 0 to 040000 for John Deere X300 Series for John Deere X300R Series for John Deere X304 Series for John Deere X310 Series for John Deere X320 Series Specifications: ID: 1" Pulley Diameter: 5.59" Belt Width: 1/2"" or 5/8" Rotation: Counter Clockwise Torque 125 ft. lbs.