Notes: 28516 O-RING 4450 2-246 113.89x3.53 is original CARRARO product. 28516 O-RING 4450 2-246 113.89x3.535 is commonly used in transmissions/axles/engines 129691, 134297, 139057, 139058, 139059, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849