BorgWarner Turbine Housing EFR B2 64mm 1.05 T4 Twin Scroll

This is the BorgWarner EFR B2 twin scroll turbine housing, featuring a 64mm wheel and a 1.05 A/R ratio with a T4 flange. It's designed for high-performance applications where precise boost control and quick spool are critical. The twin scroll design helps improve exhaust gas separation, leading to better turbine efficiency and a more responsive engine, especially at lower RPMs. This housing is a key component for building a custom turbo system or upgrading an existing one to handle more power.

Constructed from high-grade cast iron, this turbine housing is built to withstand the extreme temperatures and pressures found in performance engine setups. The 64mm turbine wheel is a popular size for a wide range of applications, offering a good balance between quick spool-up and top-end power. The 1.05 A/R ratio is well-suited for engines that need a bit more flow capacity at higher RPMs, making it a versatile choice for many builds. The T4 flange is a common standard for aftermarket turbochargers, ensuring compatibility with a wide variety of turbocharger centers and exhaust manifolds.

When installing this housing, ensure you use appropriate high-temperature exhaust manifold gaskets and hardware. Proper sealing is crucial to prevent exhaust leaks, which can significantly impact performance and turbocharger longevity. Remember that this part is not CARB approved and cannot be shipped to California. Always consult your turbocharger manufacturer's specifications and recommended installation procedures for optimal results and safety.