I’m not sure of the nomenclaure for this part. It is one of the two “caps” for the bottom side of the loader control that prevent the valve from extending to far beyond the bottom of the valve assembly. I lost one of them somewhere on the property! If someone on this Forum has a spare or an old one that you may have from replacing an old FEL control valve, I’d like to purchase it from you. I was told by Keno parts to mention this is for the “Old Block style” with the control stick that is straight up and down. Please, if you know someone that replaced a control valve and is willing to get rid of it, Please contact me at olink@mchsi.com. Thanks to all … Oly