Notes: 138297 RING NUT M22X1.5 C40 UNI is original CARRARO product. 138297 RING NUT M22X1.5 C40 UNI4 is commonly used in transmissions/axles/engines 138273, 140908, 140908, 138273, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849