Notes: 129C20-42290 V-BELT, B42.5 is original YANMAR product. 129C20-42290 V-BELT, B42.52 is commonly used in transmissions/axles/engines 4TNV94L-ZWWN, 4TNV94L-ZWWN, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849