Notes: 114651-01340 GASKET, HEAD T0.5 is original YANMAR product. 114651-01340 GASKET, HEAD T0.55 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