This V-belt transmits power from the drive pulley to the driven pulley in the combine's drive system. It sits in a single-groove pulley set and transfers torque to the auxiliary components it drives. A worn or stretched belt slips under load, reducing the rotational speed of the driven components and causing a loss of function. As an original-manufacturer part, the belt is molded to the same cross-section and pitch length as the original assembly, so it seats fully in the pulley groove without requiring shimming or tensioner adjustment. On installation, verify the belt is not twisted and that the tensioner is set to the specified deflection.