This V-belt transmits drive from the engine pulley to the gearbox input for the ground-drive system of the parent combine. It is a multi-rib belt with a specific wedge count and profile that matches the pulley grooves in the driveline. A worn or stretched belt slips under load, causing inconsistent ground speed and reduced traction at the header. The belt is an original-manufacturer component, so its cross-section and effective length match the pulley spacing and tensioner range of the original assembly, eliminating the need for shimming or bracket modification. On installation, verify the belt tracks squarely in all pulley grooves and adjust the tensioner to the specified deflection.