PTO Adapter Fits John Deere Replaces 03-32-01477One New Aftermarket Replacement PTO Adapter Fits John Deere Tractors This clamp on PTO shaft adapter fits the 1000 RPM PTO drive shaft assembly on a wide range of Fits John Deere tractors. It converts a 1 3 4" 20 spline female end to a 1 3 8" 21 spline male end and is rated up to 75 HP. Secured with two Allen head clamp bolts, it mounts directly to the tractor PTO output shaft and allows connection to implements with a smaller spline configuration.