Notes: 123900-13501 SILENCER is original YANMAR product. 123900-13501 SILENCER4 is commonly used in transmissions/axles/engines 4TNE106T-G1A, 4TNE106T-SA, 4TNE106-SA, 4TNE106-G1A, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849