Turbine Housings – Precision Engineering for Maximum Turbo Efficiency

Optimise your turbo with premium turbine housings, improving exhaust flow and boost response. Built for durability and peak performance in aftermarket turbo setups.

Turbine Housings – Precision Engineering for Maximum Turbo Efficiency

The PSR Advantage

  • 🏎️ NZ Wide Shipping

    Fast nationwide delivery

  • 🛡️ Built for performance

    Used on street and race vehicles

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    Local assistance when you need it

Turbine Housing Selection Guide

Technical Information & Buying Guide

The turbine housing directs exhaust gas through the turbine wheel and strongly influences turbo fitment and operating characteristics. A/R ratio, inlet flange, outlet style, wastegate provision, wheel compatibility and material must all match the turbo and installation.

A smaller A/R housing generally brings exhaust velocity and response forward but may increase restriction at higher flow. A larger A/R can provide greater high-RPM flow but may shift boost response later. This relationship varies with engine capacity, turbine wheel and exhaust setup, so housing selection should be based on the complete combination.

  • Match the housing to the exact turbine wheel family
  • Confirm inlet flange, outlet and wastegate configuration
  • Select A/R around response, airflow and intended RPM range

FAQ

  • Are turbine housings interchangeable between turbos?
    Only when specifically designed for the same centre housing and turbine wheel. Similar external dimensions do not confirm compatibility.

  • What does turbine housing A/R mean?
    It is a geometric ratio relating the housing passage area to its distance from the turbine centre and is one factor affecting flow and response.

  • Should I select the smallest available A/R for faster spool?
    Not automatically. A housing that is too restrictive can increase exhaust backpressure and limit high-flow performance.