I nearly binned my Canon 8050CN as it kept feeding multiple pages and getting paper jams. I tried to replace the separation roller before but I think I may not have done it properly. I tried again with this roller and I cannot tell how happy I am not 1 paper jam since (holding thumbs) and I have printed at least 1000 pages since.
Cannot recommend enough and its such an easy install from below with the paper tray removed.