What is the benefit of a 1.40 A/R ratio?

A 1.40 A/R ratio indicates a larger exhaust housing volume. This allows for better flow of exhaust gases at higher RPMs, which can help the turbocharger maintain boost pressure and prevent backpressure from choking the engine.

Why are V-band connections preferred over flanges?

V-band connections offer a simpler installation process and create a more robust, leak-resistant seal compared to traditional bolted flanges. They are also generally more forgiving of slight misalignments and can better withstand vibration.

What is an open volute design?

An open volute design means the exhaust gas enters the turbine wheel from a single entry point without being divided. This can lead to more efficient exhaust gas flow and potentially reduced exhaust manifold pressure, especially in high-flow applications.

Garrett G55 Turbine Housing 1.40 A/R O/V V-Band 761208-0070

Name: Garrett G55 Turbine Housing Kit 1.40 A/R O/V / V-Band In/Out
Brand: Garrett
SKU: garrett-garrett-g55-turbine-housing-kit-1-40-a-r-o-v-v-band-in-out-t14-489507
Price: 1299.98 USD
Availability: BackOrder

Garrett G55 Turbine Housing Kit 1.40 A/R O/V / V-Band In/Out

$1299.98

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Garrett G55 Turbine Housing Kit 1.40 A/R O/V / V-Band In/Out

Key Features

Fits Garrett G55 series turbochargers.
Features a 1.40 A/R ratio for high-flow exhaust applications.
Utilizes V-band connections for both inlet and outlet, simplifying installation and improving seal integrity.
Open volute design aids in efficient exhaust gas flow and can reduce backpressure.
Constructed from durable materials to withstand high temperatures and pressures.
Designed for performance-oriented forced induction systems.

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Product Details

The 1.40 A/R ratio on this Garrett G55 turbine housing means it’s built for high-flow applications, helping your turbocharger spool up effectively and maintain boost at higher RPMs. This housing is designed for V-band inlet and outlet connections, which simplifies installation and ensures a solid seal compared to traditional flanged setups. It’s an open-volute design, which can help improve exhaust gas flow efficiency and reduce backpressure, especially in demanding setups. This kit is a well-built component for those looking to optimize their forced induction system for significant power gains.

Garrett has engineered this housing with robust materials to handle the extreme temperatures and pressures found in performance turbocharging. The V-band connections are not only easier to install but also provide a more reliable connection that’s less prone to leaks than bolted flanges, especially under vibration. This specific housing is intended for use with Garrett's G55 series turbochargers, ensuring a precise fit and optimal performance when paired with the correct center housing rotating assembly (CHRA). If you're building a custom turbo system or upgrading an existing one where high exhaust flow is critical, this housing is a strong option to consider for its flow characteristics and ease of integration.

When installing this turbine housing, ensure you have the appropriate V-band clamp and mating flange for both the inlet and outlet. Proper sealing is crucial for performance and longevity. This part is not CARB approved and cannot be shipped to California. Always refer to your turbocharger manufacturer's specifications and installation guidelines to ensure compatibility and proper setup for your specific application.