Notes: 1000139283 RING 41.5X3 FILO 3 B DIN 2076 B F3 is original WACKER-NEUSON product. 1000139283 RING 41.5X3 FILO 3 B DIN 2076 B F31 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849