Notes: 714770-22580 PISTON ASSY, 0.50 OS is original YANMAR product. 714770-22580 PISTON ASSY, 0.50 OS5 is commonly used in transmissions/axles/engines L48AE-SEFU, L40AE-DE, L48AE-SETM, L60AE-SETM, L70AE-SE, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849