What is the A/R ratio of the exhaust housing?

The exhaust housing on this BorgWarner S300SX3 turbocharger has an A/R ratio of .91. This specification relates to the housing's ability to move exhaust gases away from the turbine wheel.

What does the 63mm inducer size refer to?

The 63mm inducer size refers to the diameter of the compressor wheel at its widest point where air enters the wheel. A larger inducer generally means the turbo can move more air.

What are the implications of this turbocharger not being CARB approved?

If a turbocharger is not CARB approved, it means it has not met the emissions standards set by the California Air Resources Board. Consequently, it cannot be legally sold or installed on vehicles registered in California.

BorgWarner S300SX3 Turbocharger 177278

Name: BorgWarner Turbocharger SX S300SX3 T4 A/R .91 63mm Inducer 90 Deg Comp Outlet
Brand: BorgWarner
SKU: borgwarner-borgwarner-turbocharger-sx-s300sx3-t4-a-r-91-63mm-inducer-90-deg-comp-t14-4385323
Price: 1150.78 USD
Availability: BackOrder

BorgWarner Turbocharger SX S300SX3 T4 A/R .91 63mm Inducer 90 Deg Comp Outlet

$1150.78

On Backorder

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

BorgWarner S300SX3 turbocharger with T4 flange, .91 A/R, and 63mm inducer. Not CARB approved.

Key Features

This product is a BorgWarner S300SX3 turbocharger.
It features a T4 exhaust housing with a .91 A/R ratio.
The compressor wheel has a 63mm inducer diameter.
The compressor outlet is configured at a 90-degree angle.
This turbocharger is not CARB approved and cannot be shipped to California.

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Product Details

This BorgWarner S300SX3 turbocharger comes with a T4 exhaust housing featuring a .91 A/R ratio and a 90-degree compressor outlet. The compressor wheel has a 63mm inducer diameter, designed to help your engine breathe more freely and make more power. This is a serious piece of hardware for those looking to significantly increase their vehicle's performance. It’s built by BorgWarner, a well-known name in the turbocharging world, so you know you’re getting a well-built component.

The S300SX3 is a popular choice for many performance builds. Its robust construction means it can handle the increased demands of higher boost pressures and temperatures. The T4 flange is a common standard, making it easier to find or fabricate exhaust manifolds to match. The 63mm inducer size on the compressor side is a good balance for many applications, offering a noticeable airflow increase without being excessively laggy on smaller displacement engines. Remember, this turbocharger is not CARB approved and cannot be shipped to California.

When installing a turbocharger like this, it's crucial to ensure your engine's lubrication and cooling systems are in top shape. Proper oil supply and return lines, along with adequate cooling, are essential for the longevity of the turbo. You'll also want to consider supporting modifications such as fuel system upgrades and engine tuning to take full advantage of the increased airflow and make sure the engine runs safely and efficiently.