BorgWarner EFR 9174 Turbo

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BorgWarner EFR 9174 Turbo

The BorgWarner EFR9174 is a hybrid turbo that combines the turbine from 8374 with the compressor from 9180. EFR9174 is intended for applications that will push a turbo to the limit with high boost and critically high turbo shaft speed, especially at altitude. This unique turbo was designed to combine the high-flowing 91mm compressor with a fast spooling 74mm turbine wheel. RPM capabilities have also been improved with higher pressure ratios achieved at lower turbo shaft speed. The use of a 74mm turbine wheel allows for a max turbo speed of 125k RPM.

Compressor Specifications

    • Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
    • Compressor Wheel OD (exducer): 91mm
    • Compressor Wheel Inducer: 67.7mm
    • Max Flow Rate: 95 lb/min
    • Built-in BOV: All EFR compressor housings incorporate an integrated compressor recirculation valve
    • Compressor Inlet: 4″ Ported Shroud Hose Coupler
    • Compressor Outlet: 2.5″ Hose Coupler w/ integrated Vband option

Turbine Specifications

      • Turbine Type: Low Inertia Gamma-Ti Turbine Wheel
      • Turbine Wheel OD: 74mm
      • Stainless Steel Turbine Housing
      • Turbine outlet: GT V-Band (aka 3″ V-Band) ~92mm OD for all EFR turbos


  • Dual Row Ceramic Ball Bearings—lowest friction and fastest spool/response, most extreme durability, built-in 2mm oil restrictor
  • Watercooled Center Section—watercooling is recommended, 14mm banjo bolts
  • Double seals on both turbine and compressor end for extreme durability and resistance to any oil seepage
  • Boost Control Solenoid Valve Integrated to Compressor Housing
  • Integrated Speed Sensor mounting provisions
  • Optional Turbo Speed Sensor Kit
  • Optional Turbo Speed Gauge
  • The EFR 9174 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

If you have questions about this product or its installation, contact us

SKU EFR-9174
Sort By Turbos
Product Name BorgWarner EFR 9174 Turbo
Weight 20.000000
Brand Borgwarner
Brands BorgWarner
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