Zestaw naprawczy mechanizmu zmiany biegów (Pierścień zabezpieczający) ZF AS TRONIC 12 AS 2301, 12 AS 2301 IT ASF, 12 AS 2331 TD, 12 AS 2335 TD, 12 AS 2335 TO, 12 AS 2340 TD, 12 AS 2341 TD, 12 AS 2501,