Notes: 129900-01820 CASE ASSY, GEAR is original YANMAR product. 129900-01820 CASE ASSY, GEAR5 is commonly used in transmissions/axles/engines 4TNE98-TBA, 4TNE98-G1A, 4TNE98-SA, 4TNE94-G1A, 4TNE94-SA, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849