Looking for high-quality, anodized, CNC cut, HKS BOV flanges? 3P Performance cuts each flange from T6 6061 aluminum and then sends them to be anodized. Designed to adapt HKS, SSQV, and Race valves to your sti. manufactured to use the factory gaskets and hardware. All manufacturing of our aftermarket parts are done right here in the United States to ensure quality and reliability!