Hagen Brothers farms,Goodrich ND | No part #, but it looks the same as the std hub, except that it is drilled and tapped for the zerk before it goes through the heat treat process. I found a perfect std hub in a salvage yard and thought maybe I could drill it and install the zerk, no way, the thing is so hard that no cutting tool will even mark it. I put that std hub back on the shelf and paid them the $400+ US for the hub with the lube fitting. The hub is drilled so that it fills the cavity between the PTO shaft and the end of the hydro pump shaft with grease |