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

The A/R ratio (Area divided by Radius) on a turbine housing affects exhaust gas flow and turbocharger spool speed. A higher A/R like 1.45 generally allows for better exhaust flow at higher RPMs, supporting more peak horsepower, while potentially slightly delaying initial spool compared to a smaller A/R.

What type of exhaust manifold is needed for this housing?

This housing features a T4 twin-scroll inlet flange. You will need a compatible exhaust manifold designed with a T4 twin-scroll entry to properly connect and utilize the housing's design for optimal performance.

What materials is this turbine housing made from?

This BorgWarner turbine housing is constructed from durable cast iron. This material is chosen for its ability to withstand the extreme temperatures and pressures generated by exhaust gases in high-performance turbocharging applications.

BorgWarner EFR B2 Turbine Housing 80mm 1.45 T4 Twin Scroll 1

Name: BorgWarner Turbine Housing EFR B2 80mm 1.45 T4 Twin Scroll (H Type)
Brand: BorgWarner
SKU: borgwarner-borgwarner-turbine-housing-efr-b2-80mm-1-45-t4-twin-scroll-h-type-t14-4385220
Price: 1161.11 USD
Availability: InStock

BorgWarner Turbine Housing EFR B2 80mm 1.45 T4 Twin Scroll (H Type)

$1161.11

Only 2 left in stock

BorgWarner EFR B2 Turbine Housing 80mm 1.45 T4 Twin Scroll (H Type). A well-built housing for high-performance turbo builds.

Key Features

Fits BorgWarner EFR B2 turbochargers.
80mm inducer size for high-flow applications.
1.45 A/R ratio helps optimize exhaust flow and spool characteristics.
T4 twin-scroll inlet flange for improved response and efficiency.
Constructed from durable cast iron for high-temperature resistance.
Designed for custom turbo builds and performance upgrades.

Secure CheckoutFast Shipping631-982-0042

Product Details

This is the BorgWarner EFR B2 turbine housing, specifically the 80mm unit with a 1.45 A/R ratio and a T4 twin-scroll inlet. It's designed for serious performance builds where you need a robust housing to handle significant exhaust flow and heat. The twin-scroll design helps improve exhaust gas velocity and spool response, especially when paired with a matching manifold. This housing is a key component for anyone looking to build a custom turbo system or upgrade an existing one for more power.

Constructed from durable cast iron, this housing is built to withstand the high temperatures and pressures associated with performance turbocharging. The 80mm inducer size and 1.45 A/R ratio are optimized for larger displacement engines or applications aiming for high peak horsepower. The T4 flange is a popular choice for its strength and ability to handle the flow requirements of powerful turbochargers. BorgWarner is known for its reliable forced induction components, and this turbine housing is no exception, offering a solid foundation for your high-performance setup.

When installing this turbine housing, ensure you have the correct T4 gasket and hardware suitable for high-temperature applications. Proper exhaust manifold and downpipe connections are crucial for optimal performance and sealing. Remember that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation guidelines for specific details and torque specifications.