The Garrett G-Series G45-1125 is a purpose-built performance turbocharger engineered for enthusiasts and builders chasing serious horsepower without sacrificing the response demanded by modern high-output engines. Paired with a T4 divided turbine housing, this unit is designed for those building a dedicated high-performance platform where flow capacity and durability are non-negotiable. It represents the latest evolution of Garrett’s G-Series lineup, bringing race-proven aerodynamics to a bolt-on turbocharger package.
Specifications
- Compressor Wheel Inducer: 67mm
- Compressor Wheel Exducer: 102mm
- Compressor Wheel Trim: 44
- Compressor Housing A/R: 0.85
- Turbine Wheel Inducer: 89mm
- Turbine Wheel Exducer: 82mm
- Turbine Wheel Trim: 84
- Turbine Housing: T4 Divided, 1.28 A/R
- HP Capacity: Up to 1125HP
Performance & Application
The G45-1125 is built for high-horsepower applications where a large-frame compressor and divided turbine housing are required to manage significant exhaust energy efficiently. Its 44-trim compressor wheel combined with an 0.85 A/R compressor housing is matched to an 84-trim turbine wheel for strong flow characteristics at elevated power levels. The T4 divided 1.28 A/R turbine housing helps maintain pulse energy separation, supporting a turbocharger package rated to deliver up to 1125HP. This configuration is intended for builders targeting maximum output from a single, high-flow turbocharger unit.
Frequently Asked Questions
- What horsepower can the Garrett G45-1125 support?
- The G45-1125 is capable of supporting up to 1125HP.
- What is the compressor wheel inducer size on the G45-1125?
- The compressor wheel inducer diameter is 67mm.
- What turbine housing does the G45-1125 use?
- It uses a T4 divided turbine housing with a 1.28 A/R.
- What is the compressor housing A/R ratio?
- The compressor housing A/R ratio is 0.85.
For builders demanding a high-flow, high-horsepower turbocharger backed by Garrett’s engineering, the G45-1125 delivers the capacity and configuration needed to push serious performance builds forward.
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