What does the A/R ratio mean for performance?

The A/R ratio, or Area/Radius, on a turbine housing affects how quickly the turbocharger spools up and how much top-end power it can produce. A higher A/R like 1.01 generally favors more top-end power and can help reduce exhaust backpressure in higher-flow applications.

What is the advantage of a V-Band outlet?

A V-Band outlet uses a clamp system to connect the downpipe to the turbine housing. This design makes installation easier and ensures a very secure, leak-free seal compared to traditional flanged connections.

What is included in this kit?

This kit includes the Garrett G45 turbine housing and the necessary hardware for installation. It is designed to work with standard rotation turbochargers.

Garrett G45 Turbine Housing 1.01 A/R T4 V-Band 757707-0023

Name: Garrett G45 Turbine Housing Kit Div T4 / V-Band 1.01 A/R - Standard Rotation
Brand: Garrett
SKU: garrett-garrett-g45-turbine-housing-kit-div-t4-v-band-1-01-a-r-standard-rotation-t14-473233
Price: 1449.41 USD
Availability: BackOrder

Garrett G45 Turbine Housing Kit Div T4 / V-Band 1.01 A/R - Standard Rotation

$1449.41

On Backorder

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

Garrett G45 Turbine Housing Kit Div T4 / V-Band 1.01 A/R - Standard Rotation

Key Features

This is the Garrett G45 Turbine Housing Kit.
Features a 1.01 A/R ratio for optimized exhaust flow.
Includes a T4 Divided turbine inlet flange.
Equipped with a V-Band outlet for secure downpipe connection.
Designed for standard rotation turbochargers.
Not CARB approved; cannot ship to California.

Secure CheckoutFast Shipping631-982-0042

Product Details

If you're building a custom turbo system or upgrading an existing one for serious performance, selecting the right turbine housing is key to matching your turbocharger to your engine's needs. This Garrett G45 Turbine Housing Kit, with a 1.01 A/R ratio and a T4 Divided inlet with V-Band outlet, is designed to help you fine-tune your engine's powerband for improved response and top-end power.

The 1.01 A/R (Area/Radius) ratio on this housing helps to optimize exhaust gas flow into the turbine wheel. A higher A/R like this one generally favors more top-end power and can help reduce backpressure in higher-flow applications, making it suitable for engines that need to breathe freely at higher RPMs. The T4 Divided inlet is a popular choice for many performance turbochargers, offering a good balance of spool characteristics and flow. The V-Band outlet simplifies installation and ensures a secure, leak-free connection to your downpipe, which is a significant advantage during assembly and maintenance.

Garrett is a well-known name in forced induction, and this kit includes the turbine housing and associated hardware needed for installation. Remember that this part is not CARB approved and cannot be shipped to California. Always consult your engine builder or tuner to ensure this specific A/R ratio and housing configuration are the best match for your engine's displacement, camshafts, and intended use.