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Air and Fuel› Superchargers, Turbochargers and Components

BorgWarner

BorgWarner Super Core EFR B2 8374

$2,989.08 $2,295.92 Save $693.16

SKU: B00E 179257

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INSTALL DIFFICULTY
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Advanced — 4+ hours

Overview

The BorgWarner EFR 8374 Supercore is a high-performance turbocharger engineered for racing, capable of supporting 475-750 HP in single turbo applications or over 1400+ HP in twin turbo setups. It features a Forged-Milled Wheel (FMW) extended tip compressor, low inertia Gamma-Ti turbine wheel, dual ceramic ball bearings, watercooled center section, and integrated BOV and boost control solenoid. It offers various turbine housing options (T3, T4 Twin Scroll, different A/R ratios and wastegate configurations). This turbo is part of the EFR (Engineered for Racing) Series, known for its durability, responsiveness, and advanced features. It is a Supercore, meaning the turbine housing, clamp plate hardware, wastegate, and actuator are not included and must be selected by the installer.
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Part #: 179257

Vehicle Symptoms
  • Stock turbo runs out of breath above 5500 rpm
  • Boost pressure drops off noticeably at high rpm
  • Built engine demands more airflow than stock turbo can move
  • Exhaust gas temps climb too high during long pulls
  • Turbo lag feels excessive after engine build
Diagnostic Codes
  • P1252 – Turbo Boost Press Low
Relevant Conversations
  • BorgWarner EFR 8374 vs Precision 6466 for 800 hp street car
  • EFR 8374 twin scroll T4 manifold clearance 2JZ swap
  • EFR 8374 Supercore turbo spool dyno results
  • P1252 low boost after tune should I upgrade to EFR 8374
  • EFR 8374 surge limit compressor map explained
  • EFR 8374 install oil feed and drain line sizes
  • BorgWarner EFR 8374 vs Garrett GTX3584R which is better
  • EFR 8374 external wastegate setup and boost controller
  • Need 750 hp daily driven EFR 8374 or Gen 2 PT6466?
  • EFR 8374 with 2000cc injectors and flex fuel build

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandBorgWarner
Part NumberB00E 179257

Videos

BorgWarner Turbo Upgrade | EFR Series 8374

BorgWarner Turbo Upgrade | EFR Series 8374
IMW-Built/Tuned: First testing of Full-Race Twin Scroll EFR 8374 on a K20

IMW-Built/Tuned: First testing of Full-Race Twin Scroll EFR 8374 on a K20
TT RS 600HP v s EVO X borgwarner efr8374 600whp = )))

TT RS 600HP v s EVO X borgwarner efr8374 600whp = )))
Holset VS Borg Warner TURBO

Holset VS Borg Warner TURBO

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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