Notes: 129906-51560 PLUG, BARREL is original YANMAR product. 129906-51560 PLUG, BARREL5 is commonly used in transmissions/axles/engines 4TNV94L-NCKS, 4TNV106TXTBL1, 4TNV106T-XTBL1, 4IRI8N, 4TNV94L-NLANG, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849