Notes: 171090-91010 GAUGE is original YANMAR product. 171090-91010 GAUGE5 is commonly used in transmissions/axles/engines 4TNE88-ESA, 4TNE88-SA, 4TNE88-G1A1, 4TNE88-G1A01, 4TNE88-EG1A, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849