Features: OOTDTY This exhaust valve gasket will provide your vehicle with the traditional BOV sound, and the inventory DV will be reserved. When you release the throttle, you can get a sweet and satisfying "swish- sound" that will make everyone Everyone knows that your vehicle is actually turbocharged. The product design is matched with the original electronically controlled solenoid valve and adopts high-quality O-rings to achieve a perfect seal. The installation is very simple, you can complete the installation yourself. The exhaust valve gasket is made of strong aluminum alloy material. High-quality materials not only make the product light in weight, but also wear-resistant and durable. Direct bolt on without worry of a check-engine light. The spacer is a pressure release system that can be used with the stock diverter valve to vent extra boost air into the atmosphere instead of sending it back into the engine's intake piping. Specifications: Material:Aluminum Alloy Size: Approx.6.1x4.4cm/2.4x1.73inch Color:Red/Black/Silver Package Includes: 1 Set Blow Off Valve Adaptor Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.