Notes: 121257-55731 FLOAT is original YANMAR product. 121257-55731 FLOAT5 is commonly used in transmissions/axles/engines 2TNE68C-ENP, 2TNE68-EIK, 2TNE68-ETB, 2TNE68-ETBA, 2TNE68-YB, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849