SKU: 12919097002 | UPC: 840232715484
BorgWarner SuperCore Assembly EFR 9174 T4 Divided Cast Iron .92 A/R Housing
BorgWarner EFR 9174 SuperCore Assembly pairs a dual ball bearing CHRA with 62/84mm Gamma-Ti compressor wheel turbine wheel and T4 divided cast iron .92 A/R turbine housing for high boost applications. Build custom turbo setups on 4-8 cylinder performance engines from Subaru STI Nissan 350Z Infiniti G35 BMW M3 and similar vehicles. Gain quick response across the powerband with airflow supporting 550 to 1100 HP.
Key Features
- Dual Ball Bearing CHRA: Water-cooled center section spins up fast and handles 100000 RPM for responsive throttle feel
- Gamma-Ti Compressor Wheel 62/84mm: Extended tip height design moves 110 lbs/min of air for strong mid-range torque and top-end power
- 74mm Inconel Turbine Wheel: High-temperature alloy resists heat cycles over 1050C for reliable operation at peak boost
- T4 Divided .92 A/R Cast Iron Turbine Housing: Bolted T4 inlet flange with 3.0 inch V-band outlet balances exhaust flow and backpressure control
- Ported Shroud Compressor Cover: Anti-surge geometry with 3.0 inch V-band outlet prevents stall during deceleration
Product Notes
- SuperCore requires separate oil feed drain lines and coolant provisions during assembly
- Verify engine displacement and horsepower goals using BorgWarner EFR MatchBot tool
- Special order item with manufacturer lead time of 1-3 weeks
Installation Notes
- Professional installation recommended.
- Adapt T4 divided flange to turbo manifold with stainless steel gasket and V-band clamps
- Oil feed M14x1.5 restricted line and unrestricted M8x1.25 drain mandatory
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2021 | Subaru | Impreza | WRX STI |
| 2003-2009 | Nissan | 350Z | Fairlady Z |
| 2003-2009 | Infiniti | G35 | Sedan Coupe |
| 2009-2024 | Nissan | GT-R | R35 |
| 2015-2021 | BMW | 3 Series | M3 F80 |
| 2015-2021 | BMW | 4 Series | M4 F82 |
Why Choose BorgWarner?
- Supplies turbos to Formula Drift NHRA champions and OEM production
- Investment cast Inconel components built for endurance racing
- Precision balanced assembly reduces vibration at high RPM
Frequently Asked Questions
- Q: What engine sizes work with EFR 9174 SuperCore?
A: Fits 2.0L to 6.0L 4-8 cylinder engines targeting 550-1100 HP in street strip or track cars - Q: What is the turbine housing material and A/R?
A: Cast iron T4 divided housing with .92 A/R for balanced spool and flow includes 4 inch V-band inlet option compatibility - Q: What warranty applies?
A: 12 month no mileage limit warranty when installed with proper oiling and cooling
Shipping & Handling
- Method: UPS Ground freight
- Availability: Special order ships in 1-3 business days
- Packaging: Oversized box 20 x 18 x 16 inches
- Weight: 28 lbs
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