These plates allow the removal of the entire secondary air injection / combi valve system, including the large injection pump near the oil filter. This results in a much cleaner looking engine bay, as well as less clutter and more room for you to get in there and wrench on your ride. We CNC machine these plates from 6061 aluminum alloy, and machine them to accept an O ring seal, so that they seal up perfectly with no fuss, and no gaskets or messy sealant. The installation is completed with our included aerospace grade Viton O ring, and stainless steel socket head hardware. SHIPPING IS INCLUDED IN THE PRICE.