Turbosmart T4 Divided 1.15AR 80mm Turbine Housing

This package includes the Turbosmart T4 Divided 1.15 AR 80mm turbine housing, designed to be a direct replacement or upgrade for compatible turbocharger setups. This housing is specifically built for T4 flanged turbos and features a divided entry design, which helps to separate exhaust pulses from each cylinder. This separation can lead to improved spool response and more efficient exhaust gas flow into the turbine wheel, especially in twin-scroll applications.

The 80mm inducer size and 1.15 A/R ratio are carefully matched to optimize performance for a wide range of engine builds aiming for significant horsepower gains. The divided housing is constructed from durable cast iron, chosen for its ability to withstand the high temperatures and pressures associated with turbocharging. This material choice ensures longevity and consistent performance under demanding conditions. The 1.15 A/R (Area/Radius) ratio is a key specification that influences how quickly the turbocharger spools up and at what engine RPM it reaches its peak efficiency. A larger A/R like 1.15 generally favors top-end power and higher boost levels, making it suitable for engines that operate at higher RPMs or require substantial airflow.

It's important to note that this turbine housing is not CARB approved and cannot be shipped to California due to emissions regulations. Ensure compatibility with your existing turbocharger's compressor housing and manifold setup before installation. Proper fitment and sealing are crucial for optimal performance and to prevent exhaust leaks.