Notes: 6193363M1 CASSETTE RAD.SHAFT SEALX/ 65X92X10/15 is original MECALAC product. 6193363M1 CASSETTE RAD.SHAFT SEALX/ 65X92X10/151 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849