This sliding pad sits on the chain of a corn header, guiding the chain and reducing friction against the header frame. It is a wear component that contacts the chain links and the slide track simultaneously. As the pad wears, the chain loses its precise alignment, which can cause uneven feeding of stalks into the gathering belts and increase lateral chain whip. The pad is machined to the original profile so it seats correctly in the slide channel without binding. On replacement, verify the chain tension is within specification before securing the mounting hardware.