BorgWarner 179150 EFR 6258 Ball Bearing T25 IWG Turbocharger 225-450HP Universal

Vehicle Fitment

• Universal -- no vehicle-specific fitment
• Single turbo: 225-450 HP range
• Twin turbo: 400-700+ HP combined

Fitment Notes

• Requires T25 turbine inlet manifold or adapter
• V-Band turbine outlet -- requires matching downpipe
• Water and oil cooling lines must be plumbed
• Compressor inducer: 49mm -- verify inlet piping diameter
• Not legal for use on emissions-controlled vehicles in California

Features

• Gamma-Ti turbine wheel -- 50% lighter than steel
• Forged milled compressor wheel (FMW) -- high-strength aluminum
• Dual ceramic ball bearing cartridge -- replaces journal bearings
• Water-cooled bearing housing -- reduces heat soak
• Integrated internal wastegate -- large capacity
• Integrated Compressor Recirculation Valve (CRV)
• Integrated Boost Control Solenoid Valve (BCSV)
• Speed sensor port -- plug-and-play turbo speed monitoring
• 347 stainless steel investment cast turbine housing
• Smallest B1 EFR frame -- fits tight engine bays

Specifications

• Part Number: 179150
• Series: EFR 6258 (B1 Frame)
• Power Range: 225-450 HP single / 400-700+ HP twin
• Compressor Inducer: 49mm
• Compressor Exducer: 62mm OD
• Max Flow: 44 lb/min
• Turbine Exducer: 58mm Gamma-Ti
• Turbine Inlet: T25 flange, single scroll
• Turbine Outlet: V-Band
• A/R Ratio: 0.64
• Wastegate: Internal
• Bearing: Dual ceramic ball bearing
• Cooling: Water and oil cooled
• Rotation: Standard (clockwise)

Included Components

• 1x EFR 6258 complete turbocharger assembly
• 1x Internal wastegate canister
• 1x Oil inlet fitting
• 1x Compressor Recirculation Valve (CRV)
• 1x Boost Control Solenoid Valve (BCSV) kit
• Wastegate signal hoses and clamps

Product Description

The BorgWarner 179150 is the EFR 6258 -- the smallest and fastest-spooling turbo in the Engineered For Racing lineup. Supporting 225-450 HP in single turbo configurations and 400-700+ HP in twin setups, the 6258 delivers class-leading spool response through its Gamma-Ti turbine wheel, forged milled compressor wheel, and dual ceramic ball bearing cartridge. Every ancillary component -- wastegate, CRV, BCSV, and speed sensor port -- is integrated directly into the unit, simplifying installation and eliminating external accessories.

The T25 turbine inlet and V-Band outlet suit a wide range of custom manifold setups. Ideal for autocross, drift, rally, road racing, and street builds. Sold as a complete, ready-to-install assembly.