Notes: F339.300.020.130 O-RING 4106 26.57x3.53 is original AGCO-MF-VALTRA product. F339.300.020.130 O-RING 4106 26.57x3.531 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849