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

The A/R ratio, or area to radius, on a turbine housing affects how quickly the turbocharger spools up and how much top-end power it can produce. A 0.95 A/R is a moderate ratio that aims to provide a good balance between quick throttle response at lower RPMs and strong power delivery at higher RPMs.

What does 'T4 divided' inlet mean?

A T4 divided inlet means the exhaust housing has an internal divider that separates the exhaust pulses from each cylinder bank before they reach the turbine wheel. This design helps maintain exhaust gas velocity, leading to quicker spool-up and improved efficiency compared to a non-divided housing.

What is included in this kit?

This kit includes the Garrett G40 turbine housing with a 0.95 A/R and standard rotation. It is designed to be a direct replacement or upgrade component for compatible Garrett G40 turbochargers. A V-band clamp and mating flange for the outlet are typically sold separately.

Garrett G40 Turbine Housing Kit 0.95 A/R V-Band T4 757707-00

Name: Garrett G40 Turbine Housing Kit Div T4 / V-Band 0.95 A/R - Standard Rotation
Brand: Garrett
SKU: garrett-garrett-g40-turbine-housing-kit-div-t4-v-band-0-95-a-r-standard-rotation-t14-478904
Price: 924.49 USD
Availability: BackOrder

Garrett G40 Turbine Housing Kit Div T4 / V-Band 0.95 A/R - Standard Rotation

$924.49

On Backorder

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

Garrett G40 Turbine Housing Kit Div T4 / V-Band 0.95 A/R - Standard Rotation

Key Features

Fits Garrett G40 series turbochargers.
T4 divided turbine inlet for improved exhaust flow and spool.
V-band turbine outlet for secure and convenient connection.
0.95 A/R ratio balances boost response and top-end power.
Standard rotation orientation for proper plumbing.
Durable cast iron construction for heat management.

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Product Details

Garrett is well-known for their high-performance turbochargers and components. This G40 Turbine Housing Kit is designed for serious enthusiasts looking to fine-tune their forced induction setup. It features a T4 divided inlet, which helps to improve exhaust gas velocity and spool characteristics, and a V-band outlet for a secure and easy connection to your exhaust system. The 0.95 A/R (area to radius) ratio is a key spec that influences how the turbocharger responds to engine load and exhaust flow, balancing quick spool with top-end power potential.

This kit includes the turbine housing specifically for the G40 series turbocharger, engineered to work with its internal components. The standard rotation designation refers to the orientation of the turbine wheel within the housing, which is important for proper plumbing and fitment in your specific application. The cast iron construction offers durability and good thermal properties for managing exhaust heat. This housing is a critical piece for anyone building or upgrading a custom turbo system where precise control over boost response and power delivery is paramount.

When installing this turbine housing, ensure you have the correct V-band clamp and mating flange for your downpipe. Proper sealing at the T4 divided inlet is also crucial to prevent exhaust leaks, which can significantly impact performance. This component is intended for custom turbocharger applications where the builder has a clear understanding of the engine's requirements and how this specific A/R ratio will affect performance.