This feeder-house chain transmits power from the header drive to the elevator slats that carry crop material into the threshing mechanism. It runs on sprockets at the front and rear of the feeder housing, maintaining tension to keep the slat flighting engaged with the floor. The chain includes a missing half-link and a connector link to simplify installation and adjustment on the housing. A worn or stretched chain causes slat timing drift, leading to uneven crop feed and potential plugging at the cylinder intake. On installation, verify that the chain tracks straight on both sprockets and adjust tension to the housing specification.