What is the A/R ratio, and why does it matter for my turbo?

The A/R ratio (Area/Radius) on a turbine housing affects how quickly the turbocharger spools up and how much top-end power it can produce. A ratio of 0.87, like on this housing, typically offers a good balance between quick spool response and high-end power for many performance applications.

What does 'stainless steel construction' mean for this turbine housing?

Using stainless steel means this housing is built to withstand the extreme temperatures and corrosive exhaust gases that a turbocharger experiences. It's a well-built material that resists rust and cracking, contributing to the longevity of the component.

What is the outlet size and type for this turbine housing?

This TiAL Sport turbine housing features a 3.75-inch V-band outlet. This specific outlet type and size are important for connecting to the rest of your exhaust system and ensuring a proper seal.

TiAL Sport S400 Turbine Housing BWVB3745-130 A/R 87.35mm

Name: TiAL Sport BWVB3745-130 A/R 87.35mm S400 Stainless Steel Turbine Housing
Brand: TiALSport
SKU: tialsport-tial-sport-bwvb3745-130-a-r-87-35mm-s400-stainless-steel-turbine-housi-t14-538189
Price: 680.35 USD
Availability: BackOrder

TiAL Sport BWVB3745-130 A/R 87.35mm S400 Stainless Steel Turbine Housing

$680.35

On Backorder

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

TiAL Sport BWVB3745-130 A/R 87.35mm S400 Stainless Steel Turbine Housing

Key Features

This product is a TiAL Sport BWVB3745-130 S400 turbine housing.
It features a 0.87 A/R ratio.
The housing has a 3.75-inch V-band outlet.
Constructed from stainless steel for durability and heat resistance.
Designed for S400-frame turbochargers.
Not CARB approved and cannot ship to California.

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Product Details

What you get with this order is the TiAL Sport BWVB3745-130 S400 turbine housing. This piece is crafted from stainless steel, which is a solid choice for handling the extreme heat and corrosive exhaust gases found in a turbo system. It's designed with an A/R ratio of 0.87 and a 3.75-inch V-band outlet, specifically for S400-frame turbos. This housing plays a crucial role in how your turbocharger spools up and performs at different engine speeds.

The stainless steel construction means it's built to last, resisting the kind of corrosion and stress that can break down lesser materials over time. TiAL Sport is known for making well-built turbo components, and this housing is no exception. The specific A/R ratio of 0.87 is a key spec; it influences the turbo's responsiveness. A lower A/R generally means quicker spool-up for better low-end power, while a higher A/R can help with top-end power but might delay spool. This 0.87 ratio is often chosen to balance those characteristics for a wide range of performance applications.

Keep in mind that this turbine housing is not CARB approved and cannot be shipped to California. If you're building a high-performance turbo system and need a reliable, durable housing for an S400-frame turbo, this TiAL Sport unit is a strong option. It's designed to handle the demands of serious performance builds.