Notes: 123900-25120 GEAR ASSY, IDLE is original YANMAR product. 123900-25120 GEAR ASSY, IDLE5 is commonly used in transmissions/axles/engines 4TNV106TGGB1, 4TNV106T-GGB1, 4TNV106GGB1B, 4TNV106-GGB1B, 4TNE106-AMM, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849