Notes: 119125-22900 PISTON ASSY, 0.25 OS is original YANMAR product. 119125-22900 PISTON ASSY, 0.25 OS5 is commonly used in transmissions/axles/engines 3TNM68-AFF, 3TNM68-AFS, 3TNM68-AIME, 3TNM68-ALH, 3TNM68-AMW, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849