The DPS Turbonator® VGT / VNT turbine housing is designed to fit S300 & S400 (T4) Based Turbochargers. It is designed with aero-space stator technology, something that makes it extremely robust and durable. The patented/and patent pending Variable Nozzle technology housing can be clocked independently so as to fit multiple applications. The Turbonator also has ultra-efficient stators to improve spool up time up to 400 rpms, lowers EGTs and also improve fuel mileage. When the best variable nozzle stators are CFD tested against sliding style VGT, such as the He351VE, the turbine housing is much more efficient when it comes to putting exhaust energy into the turbine, and flows much better overall. For more information on the The DPS Turbonator, visit our website at https://puredieselpower.com/