Notes: 114771-01340 GASKET, HEAD T0.5 is original YANMAR product. 114771-01340 GASKET, HEAD T0.55 is commonly used in transmissions/axles/engines L48N6-GYCS, L48N6-PEMA, L48N6-PMA, L48N6-PY, L48N6-PY2D, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849