Notes: 129116-61121 LINK is original YANMAR product. 129116-61121 LINK4 is commonly used in transmissions/axles/engines 3TNE82A-DGD, 4TNE88-DGD, 4TNE88-DGD, 3TNE82A-DGD, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849