Garrett G40-1000 GEN II

The G-Series II is the latest generation of Garrett Performance Turbochargers

Power Range: Configuration dependent
Displacement: Application dependent

A true evolution of the G-Series Gen I

With the G-Series II platform, Garrett introduces updated compressor aerodynamics delivering increased airflow and improved efficiency compared to the original G-Series generation. Designed as a direct upgrade solution, G-Series II allows Gen I owners to increase performance potential while retaining existing compressor and turbine housings.

Engineered for high-output road and motorsport applications, the Gen II architecture improves flow capability at peak pressure ratio and turbocharger speed while maintaining installation compatibility with earlier G-Series systems.

Let’s stick to the facts:

New compressor aero technology increases airflow by up to 10% compared to G-Series Gen I at peak pressure ratio and peak turbocharger speed

Direct upgrade path for Gen I owners using CHRA replacement

Compatible with existing Gen I compressor and turbine housings

Increased efficiency at high flow rates

Stainless steel turbine housings rated up to 1050°C

Water fittings included for simplified installation

Calibration required to fully utilise increased airflow for horsepower gains

Operating Note

Maximum allowable turbocharger speed is 125,000 rpm. Operation beyond this limit may result in premature turbocharger failure. Installation of a turbo speed sensor is recommended to monitor shaft speed during high-load operation.

Performance capability depends on engine configuration, supporting hardware and calibration. Advertised horsepower potential reflects compressor map choke-flow capacity and represents theoretical flywheel output limits rather than guaranteed vehicle results.