As for filter material of 1621 0547 00 Replacement Air Filter, wood pulp filter paper made by HV and Ahlstrom is used to eliminate the impurities including dust, grain of sand, moisture and oil mist suspending in ambient air. Metal end caps are stronger than plastic end caps, can withstand harsher operating environments, are less prone to damage, and improve the overall life of the filter.

The iron end cap can provide a better seal, ensuring a perfect fit between the filter and the air filter box, preventing unfiltered air leakage and ensuring the effectiveness of filtration. Metal materials are not easily deformed by temperature and pressure, and maintain good shape and structural integrity even in the case of high engine temperatures or operating pressures.

The iron end cap air filter can effectively filter out dust and particles in the air, prevent them from entering the engine cylinders, reduce wear on internal engine components such as piston rings, cylinder walls, etc., and extend the service life of the engine. By providing pure, ample air, it helps the engine burn fuel more fully, resulting in improved fuel economy and improved overall engine performance.