Notes: 3475615M1 SPHERICAL WASHER 18.5 DIN 74361/2B is original MECALAC product. 3475615M1 SPHERICAL WASHER 18.5 DIN 74361/2B1 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849