Notes: 26713-080002 NUT, M8 is original YANMAR product. 26713-080002 NUT, M83 is commonly used in transmissions/axles/engines L70AE-DEGFR, L70AE-DEGFRYC, L70AEDEGFRYC, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849