Notes: 171090-91011 GAUGE is original YANMAR product. 171090-91011 GAUGE4 is commonly used in transmissions/axles/engines 4TNV106-GGL6, 4TNV88-BDDR, 4TNV88-BDDR, 4TNV106-GGL6, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849