Garrett G42 Turbine Housing Kit Div T4 / V-Band 1.01 A/R

If you're building a high-performance turbo system and need to fine-tune your turbocharger's response, a different turbine housing can make a big difference. This Garrett G42 Turbine Housing Kit is designed for the Garrett G42 series turbochargers, offering a 1.01 A/R ratio with a Divided T4 inlet and V-Band outlet. The A/R ratio, or Area/Radius ratio, is crucial for controlling how quickly the turbo spools up and how much boost it can sustain at higher RPMs. A 1.01 A/R generally favors top-end power and can help reduce backpressure in higher-flow applications.

This housing is constructed from a durable cast iron material, chosen for its ability to withstand the extreme temperatures and pressures found in a turbocharger's exhaust side. The divided T4 inlet flange is a common choice for performance applications, as it helps to separate exhaust pulses from each cylinder, leading to more efficient turbine operation and potentially quicker spool. The V-Band outlet simplifies the exhaust plumbing connection, making installation and alignment easier compared to traditional flanged connections. This kit is specifically for the Garrett G42 series turbos, ensuring a direct fit and optimal performance when paired with the correct compressor housing and other system components.

When selecting a turbine housing, consider your engine's displacement, camshaft profile, and intended use. A larger A/R like this 1.01 will typically be used on larger displacement engines or for applications focused on maximizing horsepower at higher RPMs. It's important to note that this part is not CARB approved and cannot be shipped to California. Always consult your turbo system designer or a qualified performance tuner to ensure this housing is the right choice for your specific build and goals.