Notes: 22272-000050 RING, E- 5 is original YANMAR product. 22272-000050 RING, E- 55 is commonly used in transmissions/axles/engines 2TNV70-WYB, 3TNE68-ST, 3TNE74-KBS, 3TNE74-MB, 4TNV98-ZCWSHC, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849