This guide is a wooden wear component installed on the inclined conveyor of a grain harvester. It directs the crop mat as it moves upward from the header to the threshing mechanism, preventing material from spilling off the sides of the feeder chain. Over time, the contact surface wears down from constant friction with the crop and chain slats, which can allow material to escape the conveyor path and reduce feeding efficiency. The manufacturer machines this guide to match the original profile, so it seats correctly against the conveyor side sheet and maintains the proper gap for the chain slats.