Notes: 11431C-01020 BLOCK ASSY, CYLINDER is original YANMAR product. 11431C-01020 BLOCK ASSY, CYLINDER5 is commonly used in transmissions/axles/engines L100N5-GY, L100N5-GY2, L100N5-GEY, L100N5-GEY2, L100N5-GTMA, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849