Notes: 407577 O-RING 4850 2-268x3.53 FKM 90 is original CARRARO product. 407577 O-RING 4850 2-268x3.53 FKM 902 is commonly used in transmissions/axles/engines 407346, 407346, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849