What is the A/R ratio of the turbine housing, and what does it mean?

This turbo features a 0.83 A/R (Area to Radius) ratio for the turbine housing. A lower A/R ratio, like 0.83, generally helps the turbo spool up faster by increasing exhaust gas velocity. It's a balance between quick spool and peak power potential.

What type of connections does this turbo use?

The GTX3071R Gen II uses V-band connections for both the turbine inlet and outlet. This type of connection provides a strong, leak-free seal and simplifies the installation and removal process compared to traditional bolted flanges.

What kind of engine sizes is this turbo typically used for?

This turbocharger is generally recommended for engine displacements ranging from 2.0 liters up to 4.0 liters. It's a popular choice for performance builds where significant power gains are desired, and it pairs well with many common engine platforms.

Specifications

Brand: Garrett
Part #: 856801-5017S

Garrett GTX3071R Gen II Turbo Assembly Kit V-Band / V-Band 0.83 A/R

Name: Garrett GTX3071R Gen II Turbo Assembly Kit V-Band / V-Band 0.83 A/R
Brand: Garrett
SKU: garrett-garrett-gtx3071r-gen-ii-turbo-assembly-kit-v-band-v-band-0-83-a-r-t14-50670G
Price: 2226.78 USD
Availability: BackOrder

$2226.78

On Backorder

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

Key Features

This is the Garrett GTX3071R Gen II turbo assembly kit, part number 856801-5017S.
Features V-band inlet and outlet connections for a secure seal.
Includes a 0.83 A/R turbine housing for improved boost response.
Utilizes a forged-milled aluminum billet compressor wheel for strength and efficiency.
Gen II design incorporates updated aerodynamics for better airflow and spool characteristics.
Suitable for 2.0L to 4.0L engine displacements in high-performance builds.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

This is the Garrett GTX3071R Gen II turbo assembly kit, part number 856801-5017S. It features V-band connections for both the turbine inlet and outlet, and comes with a 0.83 A/R turbine housing. This turbo is designed for high-performance applications where improved airflow and boost response are critical. The Gen II designation means it incorporates updated aerodynamics and materials for better overall efficiency compared to earlier models.

The GTX3071R Gen II is built with a durable aluminum alloy compressor wheel and a forged-milled aluminum billet wheel for strength and reduced weight. Its advanced aerodynamics help it spool up faster and maintain boost pressure more effectively across a wider RPM range. The V-band connections offer a secure and leak-free seal, and they simplify installation and removal compared to traditional flanged connections. This turbo is a popular choice for builds aiming for significant power gains, often used in 2.0L to 4.0L engine displacements.

When installing this turbo, ensure your engine management system is properly tuned to take advantage of its capabilities. You'll also want to consider supporting modifications like an upgraded fuel system and exhaust to maximize performance. This kit is not CARB approved and cannot be shipped to California. Always consult the manufacturer's installation guide for specific details and recommended supporting components.