Notes: 22272-000040 RING, E- 4 is original YANMAR product. 22272-000040 RING, E- 45 is commonly used in transmissions/axles/engines 2TNE68-BL, 2TNE68-BL2, 2TNE68C-BG, 2TNE68-CDM, 2TNE68C-EBG, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849