1H0 423 377 · O-ring Volkswagen genuine (OEM) part number 1H0 423 377, O-ring. Fitted on (3)SEAL. RING — pos 5 (KAT121.BIN)SEAL. RING — pos 5 (KAT159.BIN)SEAL. RING — pos 5 (KAT166.BIN) Open the interactive exploded diagram →