What is the A/R ratio and why does it matter?

The A/R ratio, or Area/Radius, on a turbine housing indicates the size of the exhaust gas passage. A 0.72 A/R ratio, like on this housing, offers a balance between how quickly the turbocharger spools up (gets to full boost) and its ability to flow enough exhaust gas to make power at higher engine speeds.

What are the benefits of V-band connections?

V-band connections use a clamp to secure two flanged pieces together, creating a seal. They offer a more compact and often easier-to-install alternative to traditional bolt-on flanges. This design also allows for easier rotation of the housing to align with your exhaust manifold and downpipe.

What is the advantage of a stainless steel turbine housing?

Stainless steel is chosen for turbine housings because it can withstand the extreme heat generated by exhaust gases. It also offers good resistance to corrosion, which is important for the longevity of the component in a demanding automotive environment.

Garrett

Specifications

Brand: Garrett
Part #: 740902-0078

Garrett

Garrett G25 THWA Kit O/V V-Band / V-Band 0.72 A/R (SS)

Name: Garrett G25 THWA Kit O/V V-Band / V-Band 0.72 A/R (SS)
Brand: Garrett
Price: 801.29 USD
Availability: InStock

$801.29

Garrett G25 THWA Kit O/V V-Band / V-Band 0.72 A/R (SS). Garrett is known for performance turbochargers, and this turbine housing is built for improved airflow.

Key Features

Fits Garrett G25 series turbochargers.
Features V-band inlet and V-band outlet for secure and easy connection.
0.72 A/R ratio balances quick spool with high RPM power.
Stainless steel construction resists high temperatures and corrosion.
Includes an integrated wastegate actuator for precise boost control.
Designed for custom turbo system builds where airflow and control are important.

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Product Details

Garrett is a well-known name in the performance turbocharger world, and this G25 THWA (Turbo Housing With Actuator) kit is a prime example of their focus on airflow and efficiency. This specific turbine housing features a V-band inlet and V-band outlet, making for a clean and secure connection point in your custom setup. The 0.72 A/R (Area/Radius) ratio is chosen to balance quick turbo spool with the ability to make good power at higher RPMs, making it a versatile choice for many performance builds.

Constructed from stainless steel, this housing is built to withstand the high temperatures and pressures associated with turbocharging. The integrated wastegate actuator is designed to precisely control boost levels, helping to prevent overboosting and ensuring consistent performance. This kit is designed for enthusiasts looking to build or upgrade a turbo system where precise control and robust construction are key. The V-band connections simplify installation and allow for easier clocking of the turbine housing to fit your specific manifold and downpipe configuration.

When building a custom forced induction system, the turbine housing plays a critical role in how the turbocharger performs. This Garrett housing offers a solid option for those seeking a well-built component that works with the G25 series turbochargers. Remember that this part is not CARB approved and cannot be shipped to California. Always consult your vehicle's specific requirements and local emissions regulations before purchasing and installing performance parts.