Notes: 28575 O-RING 202.88x2.62 - 3800 2-171 is original CARRARO product. 28575 O-RING 202.88x2.62 - 3800 2-1715 is commonly used in transmissions/axles/engines 138662, 138663, 139055, 139056, 139407, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849