Notes: 119515-22900 PISTON ASSY, 0.25 OS is original YANMAR product. 119515-22900 PISTON ASSY, 0.25 OS5 is commonly used in transmissions/axles/engines 2TNV70-ASG, 2TNV70-HGB2BT, 2TNV70-MTA, 2TNV70-NMB, 2TNV70-NMBA, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849