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

The turbine housing has an A/R ratio of 1.58. This ratio relates to the flow area and radius of the housing, influencing how efficiently exhaust gases spin the turbine wheel. A higher A/R like 1.58 generally supports better airflow at higher RPMs and can help reduce exhaust backpressure in larger engines.

What does the 69.4mm inducer diameter refer to?

The 69.4mm inducer diameter refers to the measurement of the compressor wheel at its inlet. A larger inducer diameter allows the turbocharger to draw in and compress more air, which is essential for increasing horsepower in performance applications.

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

If a part is not CARB approved, it means it does not meet the emissions standards set by the California Air Resources Board. Consequently, this turbocharger cannot be legally shipped to or installed on vehicles registered in California.

BorgWarner

Specifications

Brand: BorgWarner
Part #: 169011
UPC: 840232700299

BorgWarner

BorgWarner Turbocharger SX S400 T6 A/R 1.58 69.4mm Inducer

$1202.80

Key Features

This is a BorgWarner S400 SX turbocharger.
Features a 69.4mm compressor inducer diameter.
Includes a T6 turbine housing with a 1.58 A/R ratio.
Built for high-performance diesel engine applications.
Not CARB approved and cannot be shipped to California.

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Product Details

If you're looking to significantly increase the power output of your diesel engine, a high-performance turbocharger like the BorgWarner S400 SX is a critical component. This turbocharger is designed for serious airflow and boost, making it a popular choice for those rebuilding or modifying their engine's induction system for more power. It's built to handle the demands of higher horsepower applications where the factory turbocharger simply won't keep up.

The S400 SX features a 69.4mm inducer diameter on the compressor wheel, which is key for moving a large volume of air. Paired with a T6 turbine housing that has an A/R ratio of 1.58, this setup is optimized for efficient exhaust gas flow and reduced backpressure, especially in larger displacement engines. This combination helps the turbo spool effectively while supporting substantial airflow at higher RPMs. BorgWarner is well-known for its robust construction, and this turbocharger is no exception, featuring durable materials designed to withstand high temperatures and pressures associated with boosted engines.

When installing a turbocharger of this caliber, it's important to ensure your engine's supporting systems are up to the task. This includes proper fuel delivery, engine cooling, and exhaust flow. Because this turbocharger is not CARB approved, it cannot be shipped to California. Always consult with a professional or refer to the manufacturer's installation guide for specific fitment and setup requirements for your vehicle.