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BorgWarner EFR 8374 Turbo


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BorgWarner EFR 8374 Turbo

EFR 8374 is engineered to support big power levels yet spool fast enough for professional time attack teams. The 74mm Gamma-Ti turbine wheel is an optimal match for the 62.6mm inducer / 83mm exducer FMW compressor wheel and is capable of 79lb/min airflow. 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 up to 1300hp. Ceramic Ball Bearing only, watercooling optional (recommended)
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 Turbine Housing – The EFR 8374 is available in (3) different turbine housing configurations, all use 3″ vband (92mm OD): [list]

0.83 A/R T3 Single Scroll (Internal WG) – Part # 179258

0.92 A/R T4 Twin Scroll (Internal WG)- Part # 179357

1.05 A/R T4 Twin scroll (external WG)- Part # 179393


Dual Row Ceramic Ball Bearings – lowest friction and fastest spool/response, most extreme durability, built-in oil control orifice – (aka oil restrictor) **no restrictor can be used with EFR turbos

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

Additional Photos:

Additional information

Turbo Variation

0.92 T4 Twin Scroll IWG 179357, 0.83 T3 Single Scroll 179258, 1.05 Twin Scroll No WG 179393

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