This wide-profile V-belt transmits power from the gearbox output to the driven pulley of the harvesting attachment. It sits in the primary drive path between the engine-driven input and the header or rotor drive system. A worn or slipping belt reduces throughput and causes uneven component speed, leading to material blockages or reduced threshing efficiency. The belt is constructed to match the original profile and length, preserving the tension and pulley contact angle that the drive system requires. On replacement, verify the belt is fully seated in all pulley grooves and adjust tension to the specified deflection.