This schematic depicts all components used in the Gp125u 1979 (n) (01 02 04 06 10 13 14 17 18 21 22 24 32 35 41 42 Air Cleaner (e2, E4, E17, E18, E21, E22, E24) partslist. The Screw is the cheapest item from this partsfiche.