The document promotes genuine DEUTZ air filters for DEUTZ engines, noting they are optimally matched to the engines. It states that only genuine DEUTZ spare parts can guarantee consistent engine performance and low fuel consumption. The document highlights benefits of DEUTZ air filters like extended service life from impregnation protection, high separation from neatly glued bellows ends, and reliability from the tear-resistant filter element and safety element that prevents dirt from reaching the clean engine side.