Borg Warner EFR B2 9274 Cast Iron B. Hsg Turbo Super Core Assembly 12747100023

$2,299.99

  • Brand: BorgWarner
  • Availability: 1 In Stock
  • SKU: EB-306026373372
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Up for sale is a BorgWarner EFR B2 9274 Turbo Super Core Assembly with Cast Iron Bearing Housing which includes the Super Core & Compressor Cover Specifications: Compressor Type: Forged-Milled Wheel (FMW) Extended Tip Compressor Wheel OD (exducer): 91mm Compressor Wheel Inducer: 72mm Max Flow Rate: 106 lb/min We can include the Turbine Housing of your choice at an additional cost,...

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Up for sale is a BorgWarner EFR B2 9274 Turbo Super Core Assembly with Cast Iron Bearing Housing

which includes the Super Core & Compressor Cover

Specifications:

Compressor Type: Forged-Milled Wheel (FMW) Extended Tip

Compressor Wheel OD (exducer): 91mm

Compressor Wheel Inducer: 72mm

Max Flow Rate: 106 lb/min


We can include the Turbine Housing of your choice at an additional cost, just message us after you have placed the order.

The EFR 9274 is Available in (4) Different Turbine Housing Configurations:

0.83 A/R T3 Undivided (Internal WG) #12741008000

0.92 A/R T4 Twin Scroll (Internal WG) #12741008001

1.05 A/R T4 Twin Scroll (External WG) #12741019002

1.45 A/R T4 Twin Scroll (External WG) #12741008003


Please review BorgWarner's turbo systems warranty, they offer a 12 month limited warranty.

B2 EFR Turbo

The "B2" housing in the BorgWarner EFR turbocharger lineup is specifically engineered for larger turbine wheels and high-power applications, distinguishing it from smaller housings such as the "A" series. Its increased size allows for greater airflow and higher power potential, making it ideal for demanding, high-horsepower setups.

Designed to accommodate larger engines and higher boost requirements, the EFR B2 series turbos are optimized for applications where maximizing performance and airflow is critical. For those seeking a turbocharger capable of supporting a high-power engine, the EFR B2 housing offers the capacity and efficiency necessary for superior results.

BorgWarner EFR 9274 Turbocharger Overview

The BorgWarner EFR 9274 represents the next stage in evolution following the acclaimed EFR9174, bringing unmatched airflow and high-performance capabilities to motorsport applications. Designed to cater to competitive drift and time attack builds, especially at higher altitudes, the 9274 excels in environments demanding extreme boost pressures and high turbo shaft speeds.

Innovative Design for Superior Performance

The EFR 9274 blends the expansive 91mm compressor exducer with a 72mm compressor inducer, enabling significantly enhanced top-end breathing while maintaining the compact footprint of its predecessor. This turbo leverages BorgWarner’s renowned 74mm Gamma-Ti turbine wheel, achieving an exceptional 106 lb/min airflow capacity at a maximum shaft speed of 125,000 RPM.

To ensure versatility across various setups, the EFR 9274 is offered in four turbine housing configurations:

  • 0.83 A/R T3 Undivided (Internal WG) (#12741008000)

  • 0.92 A/R T4 Twin Scroll (Internal WG) (#12741008001)

  • 1.05 A/R T4 Twin Scroll (External WG) (#12741019002)

  • 1.45 A/R T4 Twin Scroll (External WG) (#12741008003)

Key Features

Crafted to push the limits of turbo performance, the EFR 9274 integrates advanced technology and robust materials to ensure reliability under extreme conditions:

  • Gamma-Ti Turbine Wheel: Low inertia for rapid response and high durability

  • Dual Row Ceramic Ball Bearings: Enhances spool time and longevity, minimizing friction

  • Integrated Compressor Recirculation Valve (CRV): Built into all EFR compressor housings for smoother operation

  • Boost Control Solenoid Valve (BCSV): Incorporated into the compressor housing for precise boost regulation

  • Water-Cooled Center Section: Improves durability and cooling, with 14mm banjo bolt fittings

  • Double Seals: Provides superior oil control on both turbine and compressor ends

  • Speed Sensor Provisions: Pre-configured for seamless installation of speed sensors and monitoring systems

Compressor and Turbine Specifications Compressor Specifications:

  • Type: Forged-Milled Wheel (FMW) with Extended Tip Technology

  • Wheel OD (Exducer): 91mm

  • Wheel Inducer: 72mm

  • Max Flow Rate: 106 lb/min

  • Inlet: 4″ Ported Shroud Hose Coupler

  • Outlet: 2.5″ Hose Coupler with optional V-Band integration

Turbine Specifications:

  • Type: Gamma-Ti Low Inertia Wheel

  • Wheel OD: 74mm

  • Housing Material: Stainless Steel

  • Outlet: GT V-Band (~92mm OD)

Proven Track Record

The EFR 9274 stands out as the second largest turbocharger in BorgWarner’s EFR Black Series, earning recognition from elite motorsport professionals. Esteemed drivers like Fred Aasbo, Ryan Tuerck, Jhonattan Castro, and Ryan Litteral have incorporated this turbo into their competitive drift vehicles, highlighting its reliability and performance. Compared to the EFR9280, the 9274 delivers faster spool and enhanced overspeed resistance, although it encounters higher backpressure at elevated RPM and boost levels.

Applications and Compatibility

Designed for engines demanding extreme airflow and robust performance, the EFR 9274 is suitable for setups pushing the turbo to its operational limits. It excels in single-turbo applications for engines ranging from 2L to 6L and can complement twin-turbo configurations in larger V6 and V8 platforms. The EFR 9274 offers a balance of early spool and powerful top-end performance, making it a preferred choice for high-horsepower drift, time attack, and motorsport builds.

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