Notes: 27231-400000 PLUG 40 is original YANMAR product. 27231-400000 PLUG 405 is commonly used in transmissions/axles/engines 2TNE68-BL, 2TNE68-BL2, 2TNE68C-BG, 2TNE68C-KG2, 2TNE68-DB, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849