The Turbosmart TS‑1 7170 turbocharger is a T4‑flanged, externally wastegated unit with a 0.96 A/R housing as noted in the listing. It’s supplied to match applications needing the 7170 T4 sizing and external wastegate interface, providing the specific compressor/turbine housing geometry and flange style identified in the product description.
Turbosmart 7170 T4 0.96AR Externally Wastegated TS-1 Turbocharger