Notes: 24311-000125 O-RING, 1AP12.5 is original YANMAR product. 24311-000125 O-RING, 1AP12.55 is commonly used in transmissions/axles/engines L100EEDEVMK3, L100EEDEVMK1, L100EEDEVMK2, L100EE-DEVMK3, L100EE-DEVMK1, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849