Of all the components that make up this Steering Guide Attachment the O-ring(59w) has the lowest price.
Parts such as the Steering Guide Attachment: Rod, Steering Link, Eye Steering Comp., Washer, Plate (663), Tie Ber 2 are included in the P50trp 1991 Steering Guide Attachment parts fiche.
On this parts fiche the Washer, Plate (663) is the most specified component.