This internal air filter from Mann-Filter is a replacement element for the engine air intake system on harvesting machines. It sits in the air cleaner housing upstream of the intake manifold, removing airborne particulate before it enters the combustion chambers. A restricted filter increases intake restriction, which reduces engine power and raises fuel consumption. The filter is constructed to match the housing's sealing surfaces, ensuring unfiltered air does not bypass the element. On installation, verify the seal is seated evenly and the housing is closed fully to prevent dust ingress.