This upper sieve finger is a component of the cleaning unit's upper sieve assembly. It acts as a moving element that agitates the crop mat across the sieve surface, helping to separate grain from chaff and straw. The finger is driven by the sieve's oscillating mechanism; its motion keeps the sieve openings clear and maintains consistent airflow through the cleaning shoe. A worn or broken finger reduces separation efficiency, leading to higher grain loss over the rear of the machine. This part is manufactured by AGV to match the original geometry, ensuring the correct stroke and clearance within the sieve frame.