EFR 8374


EFR 8374 is engineered to support big power levels yet spool fast enough for professional time attack teams.

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The EFR 8374 74mm Gamma-Ti turbine wheel is the optimal match for the 62.6mm inducer / 83mm exducer FMW compressor wheel and is capable of 79lb/min airflow and 45+psi boost. This is one of the most exciting turbos in the EFR lineup for the high-power addicts. This turbo has the largest EFR compressor housing and is ideal for use in single turbo applications for the 500-800hp range, or as twin turbo applications >1400+hp.

Compressor Specifications
Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
Compressor Wheel OD (exducer): 83mm
Compressor Wheel Inducer: 62.6mm
Max Flow Rate: 79 lb/min
Built-in BOV: All EFR compressor housings incorporate an integrated BOV.
Compressor Housing Connections:
Inlet: 4″ Ported Shroud Hose Coupler
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 Investment cast Housing – The EFR 8374 is available in (3) different turbine housing configurations:
0.83 A/R T3 undivided (Internal WG)
0.92 A/R T4 twin scroll (Internal WG)
1.05 A/R T4 twin scroll (external WG)
1.45 A/R T4 twin scroll (external WG)
Turbine outlet: GT-Vband (aka small 3″ vband) ~92mm OD for all EFR turbos

Additional information

Weight N/A
Dimensions N/A
Turbine Housing

None, T3 .83 A/R IWG, T4 .92 A/R Twin Scroll IWG, T4 1.05 A/R Twin Scroll, T4 1.45 A/R Twin Scroll External WG



Borgwarner Turbos EFR & Airwerks