BorgWarner 12709097008 EFR 8370 SuperCore Turbocharger Assembly

The BorgWarner EFR 8370 SuperCore Assembly is a high-performance turbocharger cartridge engineered for racing applications requiring powerful boost without overspeeding. This aluminum SuperCore configuration supports 475-700 horsepower in single turbo applications and over 1300 horsepower in twin turbo setups.

Unique Design:

The EFR 8370 combines the high-pressure ratio compressor from the EFR 8374 with the turbine from the EFR 7670, creating an optimal balance of rapid spool response and substantial power output. This configuration delivers faster response than the 8374 while supporting higher boost pressures than the 7670 alone.

Key Features:

• Forged milled aluminum compressor wheel: 62mm inducer, 83mm exducer
• Lightweight Gamma-Ti turbine wheel: 70mm diameter, reduces inertia by 50%
• Dual-row ceramic ball bearing cartridge with built-in oil restrictor
• Integrated Compressor Recirculation Valve (CRV) to prevent surge
• Boost Control Solenoid Valve (BCSV) mounting provisions
• Water-cooled center section with 14mm banjo bolt fittings
• Compressor housing: 4-inch inlet, 2.5-inch outlet
• Capable of 79 lb/min airflow and 45+ psi boost pressure
• Double seals on turbine and compressor ends for extreme durability

SuperCore Configuration:

This SuperCore assembly includes the complete cartridge with compressor housing and center section. The turbine housing, clamp hardware, wastegate components, and actuator are sold separately, allowing custom configuration for specific applications. Compatible with all EFR 7670 turbine housings (B2-series CHRA type).

Racing Proven:

The EFR 8370 powered Robin Shute to back-to-back Pikes Peak International Hill Climb championships in 2021 and 2022, demonstrating its exceptional performance under extreme conditions including high altitude and demanding boost requirements.