PISTON — Volkswagen Volkswagen exploded parts diagram for PISTON listing 6 genuine part numbers. Parts on this diagramN 0122265 — WASHER (pos 3)N 0103467 — BOLT (pos 4)003 325 405 F — PISTON (pos 12)N 0122253 — WASHER (pos 15)N 0141313 — SCREW (pos 16)N 0256522 — BALL (pos 21)