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The BorgWarner S400SX turbine housing is specified with a .90 A/R for T4 VTF flange and notes an 87mm reference. This housing provides a defined exhaust-side A/R ratio and flange type for builders assembling S400SX turbo systems. Use it when the .90 A/R and T4 VTF interface match your manifold and exhaust routing, and verify overall turbine and spool characteristics with your application needs.
BorgWarner Turbine Housing S400SX SX .90 A/R-T4 VTF (87mm)
