The BorgWarner S400SX turbine housing with 1.10 A/R and a T4 VTF flange (87mm reference) provides a specific exhaust-side geometry for S400SX turbo assemblies. It’s intended for setups that require a 1.10 A/R to achieve a particular flow and spool profile. Verify manifold and plumbing compatibility and select the correct turbine wheel and housings to complete the installation.
BorgWarner Turbine Housing S400SX SX 1.10 A/R-T4 VTF (87mm)