Flansch 135i 335i für HKS SSQV Wastegate & BOV Blow Off Ventile HKS Flange 135i 335i for HKS SSQV Adapter for HKS SSQV on the BMW 335i Bi-Turbo for mounting the SSQV on the original points of the 335i This flange is designed to fit into the series mounting of the boost lines. Where the original 2 plastic bypass valves are located you can mount 2 HKS SSQV with this flange. They respond faster and have a great sound. Please order 2 flanges and 2 valves. And don/t forget to order 2 plugs (Block-Off) to close the original return lines, unless you want to drive the HKS SSQV closed.