Borg Warner - EFR8474 T4 1.05 A/R

Sale price$5,200.00


BorgWarner EFR 8474 Turbo (12747100019)

EFR8474 represents the state-of-the-art from BorgWarner Turbo Systems in 2019. The next evolution of the #1 most popular EFR turbo, the 8474 is intended for applications which require unmatched response and broad powerband in the 500-800+hp range. Designed specifically by BW engineering to combine the high flowing 68mm compressor inducer with a low inertia and quick spooling 84mm exducer allows the same footprint to breathe a LOT better up top without compromising down low and midrange.  Using the same 74mm Gamma-Ti turbine wheel from the EFR8374, this turbo flows an impressive 95lbs/min of air at the same 127k RPM maximum shaft speed. 
That’s a 22% improvement in flow on the same turbo size!  Efficiency plateaus are widened as a result and higher pressure ratios can be better utilized. 

Compressor Specifications

    • Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
    • Compressor Wheel OD (exducer): 84mm
    • Compressor Wheel Inducer: 68mm
    • Max Flow Rate: 95 lb/min
    • Built-in BOV: All EFR compressor housings incorporate an integrated compressor recirculation valve

Compressor Housing Connections:

  • Inlet: 4″ Ported Shroud Hose Coupler
  • Outlet: 2.5″ Hose Coupler w/ integrated Vband option


comparison of 68mm EFR8474 to 62.9mm EFR8374
EFR 8474 (blue) vs EFR 8374 (black)

Using Borg Warner’s large inducer “black series” 84mm billet compressor (68mm inducer) the 8474 houses the EFR extended-tip compressor wheel design capable of 95 lb/min airflow rate. We strongly recommend using an EFR Speed Sensor if you plan to run this turbo to the limit (125krpm+)

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

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