N90 170 202 · O-ring SEAT genuine (OEM) part number N90 170 202, O-ring. Fitted on (3)SEAL. RING — pos 13 (KAT138.BIN)SEAL. RING — pos 13 (KAT173.BIN)SEAL. RING — pos 13 (KAT242.BIN) Open the interactive exploded diagram →