Notes: 6194314M1 O-RING 4143 2-221 36.1x3.53 - is original MECALAC product. 6194314M1 O-RING 4143 2-221 36.1x3.53 -1 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849