Notes: 129001-11700 HEAD ASSY, CYLINDER is original YANMAR product. 129001-11700 HEAD ASSY, CYLINDER5 is commonly used in transmissions/axles/engines 3TNE88-TB1, 3TNE88-ETB, 3TNE88-ETB1, 3TNE88-TB, YEG22SL, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849