This part is the left-side grain-pan trough for the straw elevator on a combine harvester. It channels the separated grain and chaff from the straw walkers or rotors forward to the cleaning shoe. The trough sits between the elevator housing and the cross auger; its angled floor directs material flow without spillage. A worn or dented trough causes grain loss over the side and uneven distribution across the sieves. This component is formed to match the original profile so it seals against the side sheets and maintains the correct material trajectory.