Notes: 129C01-13600 BOLT, FLANGE M10X40 is original YANMAR product. 129C01-13600 BOLT, FLANGE M10X405 is commonly used in transmissions/axles/engines 4TNV86CT-PTB, 4TNV86CT-PTB1, 4TNV86CT-KKTF, 4TNV94CHT-NTBC, 4TNV94CHT-NTBC, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849