Notes: 28678 O-RING 3175 2-132 44.12x2.62 FKM75 is original CARRARO product. 28678 O-RING 3175 2-132 44.12x2.62 FKM751 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849