Notes: 714780-22580 PISTON ASSY, 0.50 OS is original YANMAR product. 714780-22580 PISTON ASSY, 0.50 OS5 is commonly used in transmissions/axles/engines L48AE-DEI, L48AE-DI, L100AE-DEI, L100AE-DI, L70AE-DEGMA, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849