Notes: 22125 HEXAGON NUT UNI 5588 M14 is original CARRARO product. 22125 HEXAGON NUT UNI 5588 M145 is commonly used in transmissions/axles/engines 363678, 395129, 641372, 641373, 641392, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849