Unfiltered air in the intake passage can contaminate the air flow mass sensor and distort the measuring results, cause malfunctions of the fuel injection and wear of the engine components. To prevent bypass air, our filters are form-fitted and the seals have been carefully selected.

PUR seals made from specially developed polyurethane (PU) foam ensure continuous sealing between dirty and clean sides. These seals are resistant to aging, chemical effects and are temperature stable. Their flexibility is designed to exactly fit the geometry of the sealing area.