Notes: 129400-28121 GEAR, BALANCER is original YANMAR product. 129400-28121 GEAR, BALANCER5 is commonly used in transmissions/axles/engines 4TNV86CT-MKTFK, 4TNE88-ELAN, 4TNV84-KVA, 4TNV84T-BMKTF, 4TNV84T-KAT, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849