This CAM CHAIN / TENSIONER assembly utilises two Damper,tensioner(s) - the highest specified component.
The Nut Hex 6mm is the cheapest item from this partsfiche.
Parts such as the Cam Chain / Tensioner: Washer A, 6.5m/m, Nut Hex 6mm, Bolt,flange,6x22, Washer, Sealing are included in the Cb550 Super Sport 550 Four Cb550f2 1977 Usa Cam Chain / Tensioner parts fiche.