Notes: 119802-22900 PISTON ASSY, 0.25 OS is original YANMAR product. 119802-22900 PISTON ASSY, 0.25 OS2 is commonly used in transmissions/axles/engines 3TNV82A-GKL, 3TNV82A-GKLF, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849