The Garrett GT2859R Special CHRA is a purpose-built center housing rotating assembly engineered for enthusiasts who demand crisp mid-range response without sacrificing top-end capability. This oil-cooled ball bearing cartridge is designed for street performance builds and light competition applications where quick spool and reliable boost delivery are non-negotiable. It’s the ideal core for builders assembling a custom turbocharger setup around Garrett’s proven GT2859R platform.
Specifications
- Compressor Wheel Size: 57.7mm
- Turbine Wheel Size: 55.9mm
- Turbine Housing A/R Ratio: 0.86
- Bearing Type: Oil-cooled ball bearing cartridge
- HP Capacity: Up to 400 HP
- Garrett P/N: 835998-5002S
Performance & Application
This CHRA is tailored for builds targeting strong mid-range boost response paired with a broad, usable power band. The 0.86 A/R turbine housing works in concert with the compressor and turbine wheel combination to deliver responsive spool characteristics suited to street driving as well as light competition use. Enthusiasts building a GT2859R-based turbocharger will find this core capable of supporting up to 400 HP, making it a strong foundation for performance applications that prioritize drivability alongside power.
Frequently Asked Questions
- What HP can the GT2859R Special CHRA support?
- This CHRA delivers up to 400 HP.
- What size compressor and turbine wheels does this CHRA use?
- It features a 57.7mm compressor wheel and a 55.9mm turbine wheel.
- What is the A/R ratio of the turbine housing?
- The turbine housing uses a 0.86 A/R ratio, which provides responsive mid-range boost.
- Is this a ball bearing or journal bearing CHRA?
- This is an oil-cooled bearing cartridge built on Garrett’s ball bearing platform.
For builders seeking responsive mid-range boost and proven Garrett engineering in a package ready for street and light competition use, the GT2859R Special CHRA (P/N 835998-5002S) delivers the performance foundation to get there.
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