Notes: 158557-51570 PLUG, RACK is original YANMAR product. 158557-51570 PLUG, RACK5 is commonly used in transmissions/axles/engines 4TNV94L-XHYB2, 4TNV94L-PLK2, 4TNV94L-PLK, 4TNV94L-PIKA, 4TNV94L-PIK, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849