Ford Tractor PTO Rear Shaft Adapter (21 Spline) Reference Part # 313247. This item is used w/ implement with 1000 rpm PTO speed. For use on Ford Tractor Model 881, made after 1959 that were equipped with the 2 speed deluxe PTO option. This item is new and unused old stock, that still has the factory protective coating still on it. The pto shaft listed for sale is shown as item # 52 in the attached parts schematic in the pictures. A Genuine OEM Ford Tractor replacement part. Items not paid for within the 7 day period are subject to being relisted. The item “Ford Tractor 2 Speed PTO Shaft Adapter (21 Spline) Part # 313247 (OEM New)” is in sale since Thursday, February 02, 2017. This item is in the category “Business & Industrial\Heavy Equipment Parts & Accs\Tractor Parts”. The seller is “masontractoronline” and is located in Orlando, Florida. This item can be shipped to United States.