Item Condition: NEW Part Number: 11617544805 / 116 175 448 05 Package Contents: DISA Valve O-RING for Intake Manifold Adjusting Unit If you have a failed or failing DISA valve O-Ring, air leaks into the intake and causes your vehicle to idle rough or misfire. You can spend $200 to $300 for the complete valve at your dealer or spend less than $7 and 15 minutes in your garage.