Parts such as the Steering Guide Attachment: Adjuster, Tie Bar, Nut, Nylon (663), Nut (6e5) are included in the 115/130etf 1989 Steering Guide Attachment parts fiche.
The component with the lowest price in the STEERING GUIDE ATTACHMENT schematic is the O-ring(59w).
The Steering Guide Attachment is made up of components including this Dual Engine Tiebar (6e5-61301-01-00)( which is the most expensive.