Notes: 714660-22580 PISTON W-RING OS0.5 is original YANMAR product. 714660-22580 PISTON W-RING OS0.55 is commonly used in transmissions/axles/engines L40AE-DE, L48AE-SETM, L60AE-SETM, L70AE-SE, L70AE-SETM, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849