Notes: 119687-22900 PISTON ASSY, 0.25 OS is original YANMAR product. 119687-22900 PISTON ASSY, 0.25 OS2 is commonly used in transmissions/axles/engines 3TNE74-NSR2, 3TNE74-NSR2, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849