Notes: 383970 O-RING 5-595 19.80x3.60 NBR is original CARRARO product. 383970 O-RING 5-595 19.80x3.60 NBR2 is commonly used in transmissions/axles/engines 420293, 420293, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849