Rear PTO I bought to put on either my 318 or 430. I’ve never used it since I’ve owned it; in good shape. Perhaps an additional wiring connector is needed for using on a 420. See Deere parts site. Has been sitting on shelf for at least the last four years. The item “2000 RPM Rear PTO for John Deere 316 318 322 330 332 420 430 Garden Tractor” is in sale since Wednesday, November 14, 2018. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Lawn Mowers\Lawn Mower Parts & Accessories”. The seller is “johnk2″ and is located in Annapolis, Maryland. This item can be shipped to United States.