This V-belt transmits drive power from the engine pulley to the hydrostatic pump input shaft on the host combine. It is a single-rib belt that sits in the drive system loop, transferring torque to the pump that powers the machine's ground drive. A worn or slipping belt causes reduced ground speed under load and may produce audible squeal during engagement. The manufacturer's construction matches the original belt's cross-section profile, which ensures proper seating in the pulley grooves and correct tension retention. On installation, verify the belt is not twisted and adjust tension to the specification for the drive system.