Notes: 120717 SEAL RING 50X60X4 NBR B10F is original CARRARO product. 120717 SEAL RING 50X60X4 NBR B10F5 is commonly used in transmissions/axles/engines 131204, 132755, 133705, 134852, 134853, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849