What does the 0.82 A/R ratio mean for my turbo?

The A/R (Area/Radius) ratio of a turbine housing affects how quickly the turbo spools up and how much top-end power it can make. A 0.82 A/R generally offers a good balance, allowing the turbo to build boost relatively quickly while still supporting higher horsepower levels.

What is a reverse rotation turbocharger?

A reverse rotation turbocharger spins counter-clockwise, which is different from most standard turbos. This is typically used in custom twin-turbo setups where the exhaust manifolds are mirrored to fit both turbos efficiently.

Can this turbine housing be used on any turbo?

No, this housing is specifically designed for turbochargers that use a 66mm compressor wheel and have a T4 exhaust inlet flange. It is also intended for reverse rotation applications. Always confirm your turbo's specifications before purchasing.

Turbosmart T4 0.82AR Reverse Rotation Turbine Housing TS-19T

Name: Turbosmart 66mm T4 0.82AR Reverse Rotation Turbine Housing
Brand: Turbosmart
SKU: turbosmart-turbosmart-66mm-t4-0-82ar-reverse-rotation-turbine-housing-t14-832593
Price: 469.79 USD
Availability: BackOrder

Turbosmart 66mm T4 0.82AR Reverse Rotation Turbine Housing

$469.79

On Backorder

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

Turbosmart 66mm T4 0.82AR Reverse Rotation Turbine Housing

Key Features

Fits turbos designed for a 66mm compressor wheel.
Features a T4 exhaust inlet flange.
Has a 0.82 A/R ratio for balanced spool and power.
Designed for reverse rotation turbochargers.
Constructed from durable cast iron for high-temperature resistance.
Not CARB approved; cannot ship to California.

This turbine housing is designed for specific turbocharger models that accept a 66mm compressor wheel and a T4 exhaust inlet. Always verify compatibility with your existing turbocharger or build specifications.

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Product Details

If you're building a custom twin-turbo setup or replacing a damaged turbine housing on a reverse rotation turbocharger, this Turbosmart housing is a solid option. It's designed for a 66mm compressor wheel and features a T4 exhaust flange with a 0.82 A/R ratio. This A/R helps balance exhaust gas flow and turbine speed, which is key for getting the turbo to spool up efficiently without sacrificing top-end power.

This housing is made from durable cast iron, built to handle the high temperatures and pressures found in forced induction systems. The reverse rotation design means it's specifically intended for turbos that spin counter-clockwise, often used in specialized twin-turbo applications where exhaust manifolds are mirrored. It fits right onto turbos that accept a 66mm compressor wheel and a T4 inlet flange.

Keep in mind that this part is not CARB approved and cannot be shipped to California. Always refer to your turbo manufacturer's specifications to ensure this housing is the correct match for your specific turbocharger model and application.