Notes: 23881-100002 PLUG, 10 is original YANMAR product. 23881-100002 PLUG, 105 is commonly used in transmissions/axles/engines 4TNE84-EMAX, 4TNE84T-NS, 3TNE84T-NS, 4TNE88-NS, 4TNE84-GB2S, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849