Notes: 124450-21600 GEAR, RING is original YANMAR product. 124450-21600 GEAR, RING4 is commonly used in transmissions/axles/engines 4TNE88-AGD, 3TNE88-AGD, 4TNE84T-AGD, 3TNE84-AGD, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849