The O-ring(59w) is the cheapest item from this partsfiche.
This Steering Guide Attachment diagram displays the required parts for the 40(e/et) P 1990/1991 Steering Guide Attachment.
Parts such as the Steering Guide Attachment: Nut, Nylon (663), Tie Bar, Nut, Nylon (663), Twin Kit are included in the 40(e/et) P 1990/1991 Steering Guide Attachment parts fiche.