Build serious boost with this GT42 / GT4294 performance turbocharger, designed for custom high horsepower turbo applications. With a large-frame compressor, T4 twin scroll turbine housing and oil-cooled journal bearing construction, this turbo is suitable for performance engine builds where strong airflow and high power potential are required.
This turbocharger is commonly used for custom fabrication projects, race builds, drag applications and high-output engines. It is not a direct-fit OE replacement turbo. Proper manifold, downpipe, oil feed and drain setup, external wastegate control, intercooling, fueling and ECU tuning are required.
Key Features
- GT42 / GT4294 style large-frame performance turbocharger
- Turbo part number: 731376-5002
- 1000HP capable performance range, depending on engine setup and tuning
- Ported shroud compressor housing with anti-surge design
- Oil-cooled journal bearing design
- T4 twin scroll turbine inlet flange
- 6-bolt turbine exhaust outlet
- Suitable for custom high horsepower turbo builds
Compressor Specifications
- Compressor housing type: Ported shroud / anti-surge design
- Compressor housing A/R: .60
- Compressor wheel inducer / exducer: 74.8 / 102.4mm
- Compressor air inlet / outlet: 5 inch / 4.2 inch
Turbine Specifications
- Turbine housing A/R: 1.05
- Turbine inlet flange: T4 twin scroll
- Turbine exhaust outlet: 6-bolt outlet
- Turbine wheel inducer / exducer: 81.7 / 75.45mm
Applications
- Universal performance turbo applications
- Custom turbo kits
- Race and drag builds
- High horsepower gasoline or diesel projects with proper supporting modifications
Important: This turbocharger requires professional installation and custom fabrication. Please confirm flange type, compressor and turbine dimensions, oil line setup, space clearance and power goal before ordering. Horsepower rating is a capability reference only and depends on the complete engine combination.







