What is the benefit of a divided turbine housing?

A divided turbine housing separates the exhaust gases from each cylinder bank. This helps to prevent exhaust pulses from interfering with each other, leading to improved turbocharger spool response and potentially lower exhaust manifold pressure.

What does the 0.84 A/R ratio mean for performance?

The A/R ratio (Area-to-Radius) indicates the size of the turbine housing's internal passage. A 0.84 A/R is a moderate ratio that offers a good compromise, providing relatively quick turbo spool-up while still allowing for strong airflow and power at higher engine speeds.

What material is this turbine housing made from?

This turbine housing is constructed from durable cast iron. This material is chosen for its ability to withstand the extreme temperatures and pressures generated within a turbocharger system.

Turbosmart T4 Divided Turbine Housing 0.84AR TS-19TH66B-D408

Name: Turbosmart B Frame T4 Divided 0.84AR 66mm Turbine Housing
Brand: Turbosmart
SKU: turbosmart-turbosmart-b-frame-t4-divided-0-84ar-66mm-turbine-housing-t14-832587
Price: 523.79 USD
Availability: BackOrder

Turbosmart B Frame T4 Divided 0.84AR 66mm Turbine Housing

$523.79

On Backorder

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

Turbosmart T4 Divided 0.84AR 66mm Turbine Housing

Key Features

Fits Turbosmart B Frame T4 divided turbochargers with a 66mm turbine wheel.
Features a 0.84 A/R ratio for a balance of quick spool and top-end power.
Divided housing design separates exhaust pulses from each cylinder bank.
Constructed from durable cast iron to withstand high temperatures and pressures.
T4 divided flange is a common standard for aftermarket and some OEM turbochargers.
66mm inlet size is matched to the turbine wheel for efficient exhaust gas flow.

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Product Details

This is the Turbosmart B Frame T4 Divided Turbine Housing with a 0.84 A/R ratio and a 66mm inlet. It's designed to be a direct replacement or upgrade for T4 divided turbocharger setups, specifically for the B-frame turbine wheel. The divided housing design helps separate the exhaust pulses from each bank of cylinders, which can improve turbo spool response and reduce exhaust manifold pressure compared to a non-divided housing. This particular housing has a 0.84 A/R ratio, which is a good balance for many applications, offering a solid compromise between quick spool-up and strong top-end power.

Constructed from durable cast iron, this housing is built to withstand the high temperatures and pressures found in forced induction systems. The T4 divided flange is a common standard for many aftermarket and some OEM turbochargers, making it a versatile option for builders looking to fine-tune their turbocharger's performance characteristics. The 66mm inlet size is matched to the turbine wheel diameter, ensuring efficient exhaust gas flow into the turbine. Proper exhaust manifold design and exhaust system backpressure management are key to getting the most out of this component.

When installing this turbine housing, ensure that all mating surfaces are clean and free of debris. It's recommended to use anti-seize compound on the housing bolts to prevent seizing at high temperatures. While this housing is designed for performance, it's important to note that it is not CARB approved and cannot be shipped to California. Always consult your turbocharger manufacturer's specifications and a qualified professional for proper fitment and installation guidance.