The Garrett G25-550 ball bearing turbocharger is built for enthusiasts who demand serious horsepower from a compact, small-frame package without sacrificing response. This unit pairs the advanced G-Series compressor and turbine technology with a stainless steel V-Band turbine housing, making it a strong choice for builders who need big power potential in tight engine bays. Backed by Garrett’s evolutionary aero design, this is the turbo for those who refuse to compromise between spool and top-end capability.
Specifications
- Compressor Wheel Inducer: 48mm
- Compressor Wheel Exducer: 60mm
- Compressor Wheel Trim: 65
- Compressor Housing Inlet: 3 Inch Diameter
- Compressor Housing Outlet: 2 Inch Diameter
- Compressor Housing A/R: .70
- Turbine Wheel Inducer: 54mm
- Turbine Wheel Exducer: 49mm
- Turbine Wheel Trim: 84
- Turbine Wheel Material: Mar-M Alloy, 1050 Celsius Rating
- Turbine Housing Inlet: 3 Inch O.D. V-Band
- Turbine Housing Outlet: 3.55 inch O.D. V-Band
- Turbine Housing A/R: .92
- Bearing Type: Ball Bearing
- HP Capacity: 550HP
- Garrett P/N: 871389-5005S
Performance & Application
The G25-550 is designed for builders chasing high-horsepower output while retaining the packaging advantages of a small-frame turbocharger. Its Ultra High Flow G-Series compressor wheel and evolutionary aero G-Series turbine wheel work together to deliver strong performance across the power band. Constructed from high heat resistance Mar-M Alloy, the turbine wheel is engineered to withstand extreme thermal loads, making this turbo well-suited for aggressive, high-output builds. This configuration is ideal for enthusiasts seeking a compact turbocharger capable of producing significant horsepower without stepping up to a larger frame size.
What’s Included
- Oil Feed (1mm) Restrictor Fitting to -4AN
- Two Coolant Fittings to -6AN
- Turbine Housing Inlet & Outlet V-Band Clamps
Frequently Asked Questions
- What HP can the G25-550 support?
- The Garrett G25-550 is rated to deliver 550HP from a small frame package.
- Is this a ball bearing or journal bearing turbo?
- The G25-550 is an advanced small frame ball bearing turbocharger.
- What turbine flange and A/R does this housing use?
- This turbocharger includes a Garrett stainless steel V-Band Inlet and V-Band Outlet turbine housing with a .92 A/R.
- What material is the turbine wheel made from and what is its heat rating?
- The evolutionary aero G-Series turbine wheel is made from high heat resistance Mar-M Alloy with a 1050 Celsius rating.
For enthusiasts who need small-frame packaging with the capability to support 550 horsepower, the Garrett G25-550 with .92 A/R V-Band turbine housing delivers a proven, purpose-built solution engineered for serious performance builds.
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