Notes: 129A23-01500 CASE, GEAR is original YANMAR product. 129A23-01500 CASE, GEAR5 is commonly used in transmissions/axles/engines 4TNV88C-PTB, 4TNV88C-PTB1, 4TNV86CT-PTB1, 4TNV86CT-PTB, 4TNV86CHT-MAW, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849