Notes: 129155-51270 STOPPER, TAPPET is original YANMAR product. 129155-51270 STOPPER, TAPPET5 is commonly used in transmissions/axles/engines 3TNE78A-BME, 3TNE78A-EHP, 3TNE78A-EMG, 3TNE78A-HP, 3TNE78A-KG2, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849