Notes: 129155-61140 LINK, L=30.5 MARK 05 is original YANMAR product. 129155-61140 LINK, L=30.5 MARK 055 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