Notes: 714295-22550 RING SET O.S0.50 is original YANMAR product. 714295-22550 RING SET O.S0.505 is commonly used in transmissions/axles/engines L48AE-D1, L48AE-DRBOYI, L48AE-DRWEYI, L48N5AF3T0AAAN, L48N5EK9F9HAMA, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849