This V-belt transmits drive from the header gearbox to the chopper or feed-accelerator drum on a combine harvester. It is a single-rib, classical-section belt that runs on the pulley system of the front-end attachment. A slipping or worn belt reduces chopper drum speed, leading to uneven crop residue distribution and increased load on the upstream feed chain. The belt is manufactured by Gates to match the original cross-section and length, which ensures correct tension and pulley-groove contact without requiring shimming or adapter pulleys. On installation, check the pulley alignment and tension the belt to the manufacturer's specification.