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

The A/R ratio (Area to Radius) on a turbine housing refers to the size of the exhaust gas passage. A 0.82 A/R, like on this housing, offers a good balance, helping the turbo spool up relatively quickly while still allowing for good top-end power delivery.

What type of turbochargers is this housing compatible with?

This turbine housing is designed for turbochargers that use a T4 turbine inlet flange and have a 70mm compressor cover. It's important to verify your turbocharger's specifications before purchasing.

What material is the turbine housing made from?

The turbine housing is constructed from cast iron. This material is chosen for its ability to withstand the extreme heat and pressure generated by exhaust gases in a forced induction system.

Turbosmart B Frame T4 Turbine Housing TS-19TH70B-T4082

Name: Turbosmart B Frame T4 0.82AR 70mm Turbine Housing
Brand: Turbosmart
SKU: turbosmart-turbosmart-b-frame-t4-0-82ar-70mm-turbine-housing-t14-832603
Price: 475.19 USD
Availability: BackOrder

Turbosmart B Frame T4 0.82AR 70mm Turbine Housing

$475.19

On Backorder

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

Turbosmart B Frame T4 0.82AR 70mm Turbine Housing

Key Features

This product is a Turbosmart B Frame T4 0.82AR 70mm turbine housing.
Features a 0.82 A/R ratio for a balance between low-end response and high-RPM power.
Designed for turbochargers with a T4 turbine inlet flange and a 70mm compressor cover.
Constructed from cast iron for durability under high temperatures and pressures.
This housing is not CARB approved and cannot be shipped to California.

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Product Details

This package includes the Turbosmart B Frame T4 0.82AR 70mm turbine housing. This component is crucial for managing exhaust gas flow into the turbocharger's turbine wheel, directly impacting boost response and overall engine performance. It's designed to work with specific T4 flanged turbochargers that utilize a 70mm compressor cover and a B-frame turbine inlet.

The 0.82 A/R (Area to Radius) ratio is a key specification that balances low-end torque with top-end power. A smaller A/R generally improves spool-up speed for quicker response off the line, while a larger A/R allows the turbo to breathe better at higher RPMs for more peak horsepower. This particular housing aims for a good compromise, making it a solid choice for builds that need strong performance across a broad powerband. The cast iron construction is well-built to handle the high temperatures and pressures associated with exhaust gases.

When installing this turbine housing, ensure it is properly mated to your turbocharger's center housing and exhaust manifold. Proper sealing is essential to prevent exhaust leaks, which can significantly reduce performance and efficiency. Always refer to the turbocharger manufacturer's installation guidelines for specific torque values and sealing methods.