The Washer, Plain (646) is the lowest priced item on this Upper Casing schematic.
The Bolt, With Washer(6e5) is the most widely applied product in the L150/L200ETD 1990 UPPER CASING ( six times ).
Parts such as the Upper Casing: Guide, Exhaust, Nut(661), Bolt (697), Pin, Dowel B (6e5) are included in the L150/l200etd 1990 Upper Casing parts fiche.