This lubricating hose delivers grease or oil to the threshing mechanism within the parent combine. It connects the lubrication supply point to the bearings or bushings in the threshing drum or concave assembly. A restricted or broken hose starves the threshing components of lubrication, leading to overheating and accelerated wear on the rotating elements. As an original component, its internal diameter and fitting geometry match the routing clips and banjo fittings of the original assembly, preventing kinking under vibration.