Notes: 28609 O-RING 2087 21.95x1.78 is original CARRARO product. 28609 O-RING 2087 21.95x1.785 is commonly used in transmissions/axles/engines 129144, 129460, 132455, 138527, 138943, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849