Notes: F339300021110 O-RING 3106 2-121 26.65X2 is original AGCO-MF-VALTRA product. F339300021110 O-RING 3106 2-121 26.65X21 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849