Notes: 129A00-55751 PLUG, AIR VENT is original YANMAR product. 129A00-55751 PLUG, AIR VENT5 is commonly used in transmissions/axles/engines 4TNV88C-PTB1, 4TNV88C-PTB, 3TNV86CT-DMW, 4TNV86CHT-MVX, 4TNV86CT-DDT, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849