Notes: 123900-01830 CASE ASSY, GEAR is original YANMAR product. 123900-01830 CASE ASSY, GEAR5 is commonly used in transmissions/axles/engines 4TNE106-AMM, 4TNE106T-ML, 4TNE106T-TBL, 4TNE106T-SA, 4TNE106-SA, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849