Garrett Turbocharger G-Series II G30-825, 0.83 A/R V-Band / V-Band IWG, P/N: 934118-5003S

The Garrett G-Series II G30-825 represents the next evolution of Garrett’s proven G30 platform, built for enthusiasts and tuners who demand more from a turbo they already trust. Designed as a direct upgrade path for existing Gen I G-Series owners, this unit delivers meaningful gains in compressor performance without abandoning the housing architecture that made the original G30 a benchmark. Whether you’re stepping up from a Gen I setup or specifying a G-Series turbo for a new build, the G30-825 is engineered for serious power with genuine Garrett durability.

Specifications

• Model: G30-825
• A/R Ratio: 0.83
• Turbine Housing Configuration: V-Band / V-Band Internal Wastegate (IWG)
• Housing Compatibility: Utilizes Gen I compressor and turbine housings
• Turbine Wheel Material: Mar-M alloy, rated up to 1050° C
• Turbine Housing Material: Stainless steel, rated up to 1050° C
• Rotation: Standard and reverse rotation configurations available
• Inlet V-Band Flange (For Turbo Manifold): ATP-FLS-350
• Outlet V-Band Flange (For Down-pipe): ATP-FLS-351
• Oil Drain Flange: ATP-FLA-010
• Oil Drain Gasket: GRT-GSK-008
• Oil Drain Fasteners: MIA-FST-034
• Boost Pressure Port Fitting: ATP-FTG-198
• Speed Sensor Kit: ATP-ACS-032
• Garrett P/N: 934118-5003S

Performance & Application

The G30-825 is purpose-built for builders upgrading from Gen I G-Series turbochargers who want to extract additional performance from a familiar footprint. Thanks to new compressor aero technology, this turbo delivers higher compressor flow at peak pressure ratio and peak turbo RPM compared to the original G-Series, translating to increased efficiency at high flow rates. Calibration is required to fully realize the horsepower upgrade this increased flow capability enables. Available as a complete turbo unit, supercore

Downloads

• Garrett-G-Series-II-Product Flyer