This guide bar is mounted in the feeder house of a combine harvester. It serves as a wear surface that guides the crop mat as it is drawn from the header into the threshing mechanism. The bar is positioned across the width of the feeder house floor, where it interacts with the moving chains and slats to maintain consistent crop flow. Over time, the contact face of the bar wears down from abrasion against the crop and chain slats. A worn bar allows the slats to ride lower, which can reduce feed rate and increase the risk of material bunching at the cylinder entrance. The bar is drilled for bolting to the feeder house floor; when replacing, clean the mounting surface and use new fasteners torqued to specification.