Notes: 129030-13580 EXTENSION is original YANMAR product. 129030-13580 EXTENSION4 is commonly used in transmissions/axles/engines 3TNE88-TB1, 3TNE88-ETB, 3TNE88-ETB1, 3TNE88-TB, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849