Mann Filter Compatible with audi a4 1.8 tfsi, 2.0 tdi, 3.5 tdi, 3.5 tfsi, q5 2.0 tfsi, 2.0 tdi Offers very high level of dirt seperation efficiency Provides long term 100 percent permeability Special paper impregnation provides highly stable pleats and water resistance Provides optimum protection for the engine, air flow meters and other sensors; provides functional reliability over the entire service interval