Notes: 199-0700/GEUG44012 O-RING 240.9x3.53 2-272 4950 is original CATERPILLAR product. 199-0700/GEUG44012 O-RING 240.9x3.53 2-272 49501 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849