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

The A/R ratio (Area/Radius) on a turbine housing describes the size of the exhaust gas passage. A lower A/R, like 0.64, typically results in faster turbocharger spool-up. A higher A/R, like 0.83, generally allows for better exhaust flow at higher engine speeds, contributing to more top-end power.

What is Ni-Resist cast iron?

Ni-Resist is a type of cast iron alloyed with nickel and chromium. It's known for its exceptional resistance to high temperatures and thermal shock, making it ideal for demanding exhaust components like turbine housings that experience extreme heat cycles.

What turbocharger core is this housing designed for?

This turbine housing is specifically designed for Garrett GT30R turbocharger cores. It's important to ensure your turbocharger core is compatible with this housing before installation to achieve proper fitment and performance.

Garrett GT30R Turbine Housing 0.83 A/R Ni-Resist 740902-0029

Name: Garrett GT30R Turbine Housing Kit Div T3 / V-Band 0.83 A/R (Ni-Resist)
Brand: Garrett
SKU: garrett-garrett-gt30r-turbine-housing-kit-div-t3-v-band-0-83-a-r-ni-resist-t14-22802
Price: 652.70 USD
Availability: BackOrder

Garrett GT30R Turbine Housing Kit Div T3 / V-Band 0.83 A/R (Ni-Resist)

$652.70

On Backorder

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

Garrett GT30R Turbine Housing Kit Div T3 / V-Band 0.83 A/R (Ni-Resist)grt740902-0029

Key Features

This is a Garrett GT30R turbine housing kit.
Features a T3 inlet flange and a V-band outlet for flexible installation.
The 0.83 A/R ratio balances quick turbo spool with high-RPM power.
Constructed from durable Ni-Resist cast iron for high-temperature resistance.
Designed for custom turbo builds and performance upgrades.

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Product Details

If you're building a custom turbo system or upgrading your existing setup for more power, a well-chosen turbine housing is critical. This Garrett GT30R turbine housing kit is designed for tuners and builders looking to optimize their engine's performance. It features a T3 inlet flange and a V-band outlet, offering a versatile connection for various exhaust manifold and downpipe configurations. The 0.83 A/R (Area/Radius) ratio is a popular choice for balancing quick spool-up with top-end power, making it suitable for a wide range of engine builds.

Constructed from Ni-Resist cast iron, this housing is built to withstand the extreme temperatures and pressures found in a turbocharger's exhaust side. Ni-Resist is a nickel-chromium alloy known for its excellent thermal stability and resistance to thermal fatigue, which is crucial for long-term durability under boost. The kit includes the turbine housing itself, ready to be paired with your Garrett GT30R turbocharger core. This part is not CARB approved and cannot be shipped to California.

When selecting a turbine housing, consider your engine's displacement, camshaft profile, and desired powerband. The 0.83 A/R on this Garrett housing generally promotes a broader powerband compared to smaller A/R ratios, allowing your engine to breathe more freely at higher RPMs. Ensure your turbocharger core is compatible with this housing before purchase.