Forced Performance Cast O2 Housing / Dump Tube (Evo 8/9) The Cast EVO 9 O2 housing is made specifically for use with FP's Evo IX Stainless Steel turbine housings. This O2 housing utilizes a 3.55" V-Band to connect to the SS Turbine Housing and a factory... MSRP: Was: Now: $325.00 Choose Options