{"product_id":"borgwarner-efr-8374-0-92-a-r-t4-twin-scroll-internal-wastegate-turbocharger","title":"BorgWarner EFR 8374 0.92 A\/R T4 Twin-Scroll Internal-Wastegate Turbocharger","description":"\u003cp\u003e\u003cstrong\u003eBorgWarner EFR 8374 0.92 A\/R T4 Twin-Scroll Internal-Wastegate Turbocharger\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number: 179357\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe BorgWarner EFR 8374 is a premium dual-ball-bearing turbocharger rated by BorgWarner for 475–750 horsepower. Part number 179357 is a fixed complete assembly combining the 8374 compressor and 74 mm Gamma-Ti turbine with a 0.92 A\/R divided T4 turbine housing and an integrated internal wastegate.\u003c\/p\u003e\n\u003cp\u003eThe 62 mm nominal inducer and 84 mm nominal outside-diameter forged-milled compressor wheel provide substantial airflow in a compact B2-frame package. BorgWarner pairs it with a low-inertia 74\/65 mm Gamma-Ti turbine wheel and a dual-row ceramic ball-bearing cartridge to improve transient response and reduce rotating inertia relative to a conventional nickel-alloy turbine and journal-bearing arrangement.\u003c\/p\u003e\n\u003cp\u003eEFR integration reduces the number of separate components required around the turbocharger. The compressor cover incorporates a compressor recirculation valve and boost-control solenoid valve, while the stainless-steel turbine housing includes a large internal wastegate. The compressor cover is also machined with a turbo-speed-sensor provision for customers who add the optional sensor.\u003c\/p\u003e\n\u003cp\u003eThis exact assembly uses BorgWarner supercore 179257 and turbine-housing assembly 12741008001. It is supplied as one fixed configuration rather than a turbine-housing dropdown product.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBorgWarner-rated 475–750 horsepower range\u003c\/li\u003e\n\u003cli\u003e62 mm nominal forged-milled compressor-wheel inducer\u003c\/li\u003e\n\u003cli\u003e84 mm nominal compressor-wheel outside diameter\u003c\/li\u003e\n\u003cli\u003e74 mm Gamma-Ti turbine-wheel outside diameter with 65 mm exducer\u003c\/li\u003e\n\u003cli\u003eDual-row ceramic ball-bearing cartridge with metal cage\u003c\/li\u003e\n\u003cli\u003e0.92 A\/R divided T4 twin-scroll turbine housing\u003c\/li\u003e\n\u003cli\u003eInvestment-cast 300-series stainless-steel turbine housing\u003c\/li\u003e\n\u003cli\u003eIntegrated internal wastegate\u003c\/li\u003e\n\u003cli\u003eLarge 36 mm wastegate port with 42 mm valve head\u003c\/li\u003e\n\u003cli\u003eIntegrated compressor recirculation valve\u003c\/li\u003e\n\u003cli\u003eIntegrated electronic boost-control solenoid valve\u003c\/li\u003e\n\u003cli\u003eExtended-tip compressor-wheel technology\u003c\/li\u003e\n\u003cli\u003ePre-machined turbo-speed-sensor mounting provision\u003c\/li\u003e\n\u003cli\u003eClockable compressor cover and turbine housing\u003c\/li\u003e\n\u003cli\u003eWater-cooled iron bearing housing\u003c\/li\u003e\n\u003cli\u003eIntegrated oil-flow restriction in the bearing housing\u003c\/li\u003e\n\u003cli\u003eThree-inch half-Marmon turbine-outlet connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e179357 — BorgWarner EFR 8374 complete turbocharger assembly\u003c\/li\u003e\n\u003cli\u003e179257 — BorgWarner EFR 8374 iron-bearing-housing supercore within the assembled turbocharger\u003c\/li\u003e\n\u003cli\u003e12741008001 — BorgWarner 0.92 A\/R divided T4 internal-wastegate turbine-housing assembly\u003c\/li\u003e\n\u003cli\u003eIntegrated compressor recirculation valve\u003c\/li\u003e\n\u003cli\u003eIntegrated boost-control solenoid valve\u003c\/li\u003e\n\u003cli\u003eInternal wastegate, actuator, bracket, and linkage as installed on the complete assembly\u003c\/li\u003e\n\u003cli\u003eFactory oil-inlet fitting and installed bearing-housing hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTurbocharger Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTurbocharger family: BorgWarner EFR\u003c\/li\u003e\n\u003cli\u003eModel: EFR 8374-C\u003c\/li\u003e\n\u003cli\u003eComplete assembly part number: 179357\u003c\/li\u003e\n\u003cli\u003eSupercore part number: 179257\u003c\/li\u003e\n\u003cli\u003eTurbine-housing assembly part number: 12741008001\u003c\/li\u003e\n\u003cli\u003eFrame size: B2\u003c\/li\u003e\n\u003cli\u003ePublished power range: 475–750 horsepower\u003c\/li\u003e\n\u003cli\u003eBearing-housing material: Iron\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompressor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor-wheel inducer: 62 mm nominal\u003c\/li\u003e\n\u003cli\u003eCompressor-wheel outside diameter: 84 mm nominal\u003c\/li\u003e\n\u003cli\u003eCompressor-wheel construction: Forged and milled aluminum\u003c\/li\u003e\n\u003cli\u003eCompressor technology: Extended tip\u003c\/li\u003e\n\u003cli\u003eCompressor inlet: 101.6 mm \/ 4.00 inches\u003c\/li\u003e\n\u003cli\u003eCompressor outlet: 63.5 mm \/ 2.50 inches\u003c\/li\u003e\n\u003cli\u003eCompressor outlet style: Hose connection as supplied, with machining provision for a compatible V-band connection\u003c\/li\u003e\n\u003cli\u003eCompressor recirculation valve: Integrated\u003c\/li\u003e\n\u003cli\u003eBoost-control solenoid valve: Integrated\u003c\/li\u003e\n\u003cli\u003eTurbo-speed-sensor provision: Pre-machined; sensor sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTurbine-wheel material: Gamma titanium aluminide\u003c\/li\u003e\n\u003cli\u003eTurbine-wheel outside diameter: 74 mm\u003c\/li\u003e\n\u003cli\u003eTurbine-wheel exducer: 65 mm\u003c\/li\u003e\n\u003cli\u003eTurbine-housing A\/R: 0.92\u003c\/li\u003e\n\u003cli\u003eTurbine inlet: Divided T4\u003c\/li\u003e\n\u003cli\u003eScroll configuration: Twin scroll\u003c\/li\u003e\n\u003cli\u003eTurbine-housing material: Investment-cast 300-series stainless steel\u003c\/li\u003e\n\u003cli\u003eWastegate configuration: Integrated internal wastegate\u003c\/li\u003e\n\u003cli\u003eWastegate port diameter: 36 mm\u003c\/li\u003e\n\u003cli\u003eWastegate valve-head diameter: 42 mm\u003c\/li\u003e\n\u003cli\u003eTurbine outlet: Three-inch half-Marmon V-band-style connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBearing Housing, Oil, and Coolant Connections\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBearing system: Dual-row ceramic ball bearings with metal cage\u003c\/li\u003e\n\u003cli\u003eOil inlet: -4AN male fitting\u003c\/li\u003e\n\u003cli\u003eOil-flow restriction: Integrated into the bearing housing\u003c\/li\u003e\n\u003cli\u003eOil-drain port: 3\/8-NPT threaded connection\u003c\/li\u003e\n\u003cli\u003eOil-drain flange provision: Two M8 × 1.25 holes on 38 mm centers\u003c\/li\u003e\n\u003cli\u003eMinimum recommended oil-drain size: -8AN \/ 1\/2-inch inside diameter\u003c\/li\u003e\n\u003cli\u003eCoolant ports: Four M14 × 1.5 straight-thread ports\u003c\/li\u003e\n\u003cli\u003eCoolant routing: Cross-flow through one lower inlet and the diagonally opposite upper outlet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePart number 179357 is a fixed complete turbocharger assembly with a 0.92 A\/R divided T4 turbine housing and internal wastegate.\u003c\/li\u003e\n\u003cli\u003eThis listing should not be configured with a turbine-housing dropdown; alternate EFR 8374 housings and complete assemblies use different BorgWarner part numbers.\u003c\/li\u003e\n\u003cli\u003eThe divided T4 turbine housing is intended for a properly divided exhaust manifold that preserves exhaust-pulse separation to the turbine inlet.\u003c\/li\u003e\n\u003cli\u003eUsing the housing with an undivided manifold removes most of the pulse-separation benefit associated with the twin-scroll configuration.\u003c\/li\u003e\n\u003cli\u003eThe integrated compressor recirculation valve may be retained, blocked off with the appropriate BorgWarner service components, or supplemented by an external valve where the system design requires it.\u003c\/li\u003e\n\u003cli\u003eThe integrated boost-control solenoid requires ECU wiring, pneumatic routing, and application-specific control configuration.\u003c\/li\u003e\n\u003cli\u003eMinimum boost pressure and usable control range depend on the installed actuator, actuator preload, exhaust-manifold pressure, and boost-control strategy.\u003c\/li\u003e\n\u003cli\u003eWater cooling is strongly recommended for the bearing housing.\u003c\/li\u003e\n\u003cli\u003eAn additional oil restrictor should not be added unless required by a verified application-specific oil-pressure condition; BorgWarner incorporates the primary restriction into the bearing housing.\u003c\/li\u003e\n\u003cli\u003eThe turbo-speed sensor is not included, and the compressor-cover passage requires final drill-through when the optional sensor is installed.\u003c\/li\u003e\n\u003cli\u003eThe turbine-outlet V-band clamp and mating half-Marmon downpipe flange are not included.\u003c\/li\u003e\n\u003cli\u003eThe divided T4 turbine-inlet gasket is not included.\u003c\/li\u003e\n\u003cli\u003eThe oil-drain gasket, oil-drain fitting, oil-feed line, oil-drain line, and coolant lines and fittings are not included.\u003c\/li\u003e\n\u003cli\u003eIntake plumbing, charge piping, intercooler, exhaust manifold, downpipe, wiring connector, heat-management components, and application-specific installation hardware are not included.\u003c\/li\u003e\n\u003cli\u003eThis is a universal performance turbocharger and is not supplied as a vehicle-specific installation kit.\u003c\/li\u003e\n\u003cli\u003eFinal turbocharger selection should account for engine displacement, airflow demand, fuel, intended boost pressure, engine-speed range, exhaust-manifold design, backpressure, response target, and duty cycle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEmissions and Competition-Use Notice\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eUnless specifically identified as emissions-legal for the applicable vehicle and application, this product is intended for sanctioned competition, off-road, or other non-emissions-controlled use. Installation or use on an emissions-controlled vehicle operated on public roads may violate federal, state, or local law. The purchaser and installer are responsible for confirming and maintaining compliance with all applicable emissions and vehicle-use regulations.\u003c\/em\u003e\u003c\/p\u003e","brand":"Borgwarner","offers":[{"title":"Default Title","offer_id":46276162617401,"sku":null,"price":3476.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/8512\/9017\/files\/179357_092a4fa0-4df0-455e-acc1-08c18aadfe2e.png?v=1785867641","url":"https:\/\/rad-power.com\/products\/borgwarner-efr-8374-0-92-a-r-t4-twin-scroll-internal-wastegate-turbocharger","provider":"RAD","version":"1.0","type":"link"}