Notes: 171081-59900 NUT, CAP is original YANMAR product. 171081-59900 NUT, CAP5 is commonly used in transmissions/axles/engines 3TNE68-GH, 3TNE78A-GH, 3TNE84-GH, 3TNE84T-GH, 4TNE84T-GH, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849