Notes: 714120-22590 PISTON ASSY, 0.50 OS is original YANMAR product. 714120-22590 PISTON ASSY, 0.50 OS5 is commonly used in transmissions/axles/engines L48N5CC1T1HA, L48N5CF1C1AA, L48N5CL1T1CAIC, L48N5EA1C1AAS1, L48N5EA1C1JAS1, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849