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

The A/R ratio (Area/Radius) of the turbine housing indicates its flow capacity. A higher A/R like 1.10 on this turbocharger means the housing is larger, which helps reduce exhaust backpressure at higher RPMs. This allows the turbo to breathe more freely and sustain boost levels more effectively in demanding applications.

What does 'compressor inducer diameter' mean?

The inducer diameter refers to the diameter of the compressor wheel where the air first enters. A larger inducer diameter, like the 74.56mm on this turbo, means the compressor wheel is designed to draw in and compress a greater volume of air, which is essential for increasing horsepower.

Can this turbocharger be shipped to California?

No, this turbocharger is not CARB approved and cannot be shipped to California due to emissions regulations.

BorgWarner S400SX3 Turbocharger 177101

Name: BorgWarner Turbocharger SX S400SX3 T4 A/R 1.10 74.56mm Inducer
Brand: BorgWarner
SKU: borgwarner-borgwarner-turbocharger-sx-s400sx3-t4-a-r-1-10-74-56mm-inducer-t14-4385269
Price: 1272.19 USD
Availability: InStock

BorgWarner Turbocharger SX S400SX3 T4 A/R 1.10 74.56mm Inducer

$1272.19

Only 3 left in stock

BorgWarner S400SX3 Turbocharger 177101. Features a T4 flange and 1.10 A/R.

Key Features

Fits custom forced induction applications.
BorgWarner S400SX3 model.
Compressor inducer diameter is 74.56mm.
Turbine housing features a T4 flange.
Turbine housing A/R ratio is 1.10.
Not CARB approved; cannot ship to California.

This turbocharger is designed for custom performance applications and does not have specific vehicle fitment listed. Always consult with a professional installer or tuner to confirm compatibility with your vehicle's engine and existing systems.

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Product Details

This is the BorgWarner S400SX3 turbocharger, part number 177101. It's built for serious performance applications where increased airflow and boost are needed. The S400SX3 is a popular choice for those looking to upgrade their forced induction system for more power. It features a large 74.56mm inducer diameter on the compressor wheel, designed to move a significant amount of air.

The turbine housing on this unit has a T4 flange and an A/R ratio of 1.10. This larger A/R helps to reduce exhaust backpressure at higher engine speeds, allowing the turbo to spool more efficiently and sustain boost levels. The robust construction you expect from BorgWarner means this turbo is built to handle the demands of high-performance engines. It's a well-built component intended for custom builds and performance tuning where precise control over airflow is critical.

When installing a turbocharger like this, it's important to ensure your engine's supporting systems are up to the task. This includes proper fuel delivery, engine management tuning, and an exhaust system that can handle the increased flow. Because this turbocharger is not CARB approved, it cannot be shipped to California.