Turbosmart Turbine Housing (70mm Kompact) T4 Divided 1.18AR

This Turbosmart turbine housing features a 70mm inducer diameter and a T4 divided inlet flange with a 1.18 A/R ratio. The divided housing design helps keep exhaust pulses separated as they enter the turbine wheel, which can improve spool response and reduce turbo lag, especially on twin-scroll manifolds. The 1.18 A/R ratio is on the larger side, generally suited for higher horsepower applications where maximizing top-end flow is more important than the absolute quickest spool.

Constructed from durable cast iron, this housing is built to withstand the high temperatures and pressures associated with forced induction. The 70mm inducer size is a common choice for many performance builds, offering a good balance between airflow capacity and responsiveness. This housing is designed to be compatible with Turbosmart's Kompact wastegate actuators, allowing for precise boost control. It's important to note that this part is not CARB approved and cannot be shipped to California.

When planning your build, consider that the A/R ratio significantly impacts how the turbocharger performs across the RPM range. A larger A/R like 1.18 will generally shift the powerband higher in the RPMs compared to a smaller A/R. Ensure this housing's characteristics align with your engine's displacement, camshaft profile, and overall performance goals for optimal results.