John Deere Dual Speed PTO Adapter AR113545 RE218639 for 7820 7920 8000 & MORE. This was still in a sealed bag before I opened it.. Please contact me or John Deere to make sure this will work for you. It was purchased years ago for my grandfather's 7920 and never used. Will ship double boxed and packed with lots of paper. Please don't hesitate to message me. Will ship free USPS, UPS OR FEDEX.