What does the .81 A/R ratio on the turbine housing mean?

The A/R ratio of the turbine housing (.81 in this case) is a measure of the housing's flow capacity relative to its physical size. A higher A/R like .81 generally allows for better exhaust gas flow at higher RPMs, helping the turbo to breathe more freely and potentially make more top-end power.

What is the significance of the 43mm inducer wheel size?

The inducer wheel size refers to the diameter of the compressor wheel where the air enters. A 43mm inducer is a specific size that BorgWarner has chosen for this turbocharger model, influencing its airflow characteristics and how quickly it can build boost pressure.

What supporting modifications are typically needed for a turbocharger like this?

Installing a performance turbocharger often requires upgrades to fuel injectors, fuel pumps, engine management tuning, and potentially exhaust and intake systems to match the turbo's airflow capabilities and ensure reliable operation.

BorgWarner Turbocharger SX S1BG T26 A/R .81 43mm Inducer 313

Name: BorgWarner Turbocharger SX S1BG T26 A/R .81 43mm Inducer
Brand: BorgWarner
SKU: borgwarner-borgwarner-turbocharger-sx-s1bg-t26-a-r-81-43mm-inducer-t14-4385414
Price: 1253.74 USD
Availability: BackOrder

BorgWarner Turbocharger SX S1BG T26 A/R .81 43mm Inducer

$1253.74

On Backorder

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BorgWarner SX S1BG T26 turbocharger with a .81 A/R turbine housing and 43mm inducer wheel.

Key Features

Fits: Check manufacturer fitment data to confirm compatibility with your vehicle.
Compressor Inducer Wheel Size: 43mm
Turbine Housing A/R: .81
Brand: BorgWarner
Model: SX S1BG T26
Not CARB approved; cannot ship to California.

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Product Details

This BorgWarner SX S1BG turbocharger features a 43mm inducer wheel, a key measurement that directly impacts how quickly the turbo spools up and the overall airflow it can handle. The turbine housing is specified with an A/R ratio of .81, which is a critical factor in balancing exhaust gas flow and backpressure. This particular turbocharger is built for performance applications where increased horsepower and torque are desired through forced induction.

Constructed with BorgWarner's reputation for robust engineering, this unit is designed for durability under demanding conditions. The SX series turbos are known for their advanced aerodynamics and efficient compressor maps, aiming to provide a broad powerband. The .81 A/R turbine housing is a common choice for many turbocharged engines, offering a good compromise between low-end response and high-RPM breathing. It's important to note that this turbocharger is not CARB approved and cannot be shipped to California due to emissions regulations.

When installing a turbocharger of this caliber, it's essential to ensure your engine's supporting systems are up to the task. This includes proper fuel delivery, engine management tuning, and an adequate cooling system to handle the increased heat and stress. Consulting with a performance tuning specialist is highly recommended to optimize the setup and realize the full potential of this BorgWarner turbocharger.