Our Audi Q7 (4L) 2006-2010 Front NEW Suspension Air Spring Bag Strut Pressure Valve will replace the original Front Air Spring Bag Strut Pressure Valve. What is an air spring bag strut Pressure Valve?- an air spring bag strut Pressure Valve is what keeps the air pressure inside the Air Strut and does not let it escape. Pressure Valves can brake or deteriorate over time. When this happens the Air Strut can no longer hold air pressure. If this system begins to fail one visible sign will be that your vehicle will be lower than factory height.If a leaking Air Strut Pressure Valve is not replaced on time it will cause Air Suspension Compressor Failure. Our Air Strut Pressure Valves come with a **Limited 2 Year Warranty** against any manufacturer defects. This Listing is For 1 Audi Q7 (4L) 2006-2010 Front NEW Suspension Air Spring Bag Strut Pressure Valve.