What is the benefit of a 1.23 A/R ratio?

A 1.23 A/R ratio on a turbine housing helps to balance turbocharger spool speed with exhaust gas flow efficiency. This means it can help a larger turbocharger build boost more quickly in the lower RPM range while still allowing for good top-end power.

What is the advantage of a V-band outlet?

V-band connections use a clamp system to secure the exhaust outlet. This makes installation easier, allows for easier rotation (clocking) of the housing during setup, and provides a strong, reliable seal compared to some bolted flanges.

What does 'Not CARB approved' mean for shipping?

CARB (California Air Resources Board) approval is required for emissions-controlled parts sold in California. Since this part is not CARB approved, it cannot be legally shipped to addresses within California.

Garrett G47 Turbine Housing 1.23 A/R T6 V-Band 761208-0077

Name: Garrett G47 Turbine Housing Kit 1.23 A/R T6 V-Band In/Out
Brand: Garrett
SKU: garrett-garrett-g47-turbine-housing-kit-1-23-a-r-t6-v-band-in-out-t14-539394
Price: 1310.64 USD
Availability: BackOrder

Garrett G47 Turbine Housing Kit 1.23 A/R T6 V-Band In/Out

$1310.64

On Backorder

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

Garrett G47 Turbine Housing Kit 1.23 A/R T6 V-Band In/Out

Key Features

This turbine housing has a 1.23 A/R ratio for balanced spool and top-end power.
Features a T6 flange for exhaust inlet connection, suitable for larger turbos.
Includes a V-band connection for the exhaust outlet, simplifying installation and sealing.
Constructed from cast iron for durability under high heat and pressure.
Designed for Garrett G47 series turbochargers.
Not CARB approved and cannot be shipped to California.

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Product Details

The 1.23 A/R ratio on this Garrett G47 turbine housing is specifically chosen to help spool up larger turbos faster, making it a solid choice for builds aiming for improved low-end response without sacrificing top-end power. This housing utilizes a T6 flange for the exhaust inlet, which is common on larger turbochargers, and a V-band connection for the exhaust outlet, simplifying installation and ensuring a secure seal. The cast iron construction is well-built to handle the high temperatures and pressures found in forced induction systems.

Garrett has a long history in performance turbocharging, and this housing kit is designed to integrate seamlessly with their G47 series turbos. The V-band outlet is a practical feature that makes clocking the housing easier during installation compared to traditional bolted flanges. This kit is intended for custom turbocharger setups where precise control over boost response and power delivery is critical. It’s important to note that this part is not CARB approved and cannot be shipped to California.

When planning your build, consider that the A/R ratio significantly impacts how the turbocharger performs across the RPM range. A 1.23 A/R is a good middle ground for many applications, offering a balance between quick spool and efficient exhaust gas flow at higher engine speeds. Ensure your turbocharger is compatible with a T6 inlet flange and a V-band outlet before purchasing.