Disappointing when the owner's manual does not document the component manufacturer AND worst yet the part is not labled with the manufacturer. This thread indicates the steering system was supplied by Tides Marine Beneteau 361 stiff steering | Sailboat Owners Forums and some of the parts referred to Whitlock so that might be a start.
If its a French boat, the steering pedestal may be Amiot brand.
The stiff steering symptoms are commonly a rudder bearing that has dried out and/or the cable sheaves need lubrication and may need to be replaced. The chain and sprocket at the wheel is another place to look at.
It really doesn’t matter who the manufacturer happened to be, the parts are likely very similar.