The Garrett GT2860R Special CHRA is a purpose-built cartridge assembly engineered for enthusiasts who demand strong mid-range response without sacrificing top-end capability. Built around Garrett’s proven ball bearing platform, this CHRA is the core upgrade for tuners building a serious 4-cylinder turbo system. It’s the right choice for anyone rebuilding, upgrading, or configuring a GT2860R-based turbocharger who needs genuine Garrett internals with a documented spec sheet.
Specifications
- Compressor Wheel: 64mm
- Turbine Wheel: 60mm
- Turbine Housing A/R: .86
- Bearing Type: Ball bearing cartridge
- HP Capacity: 300+ HP
- Garrett P/N: 446179-5053S
- Also Known As: GT2860R Special
- Alternate P/N: 446179-0053s
- Alternate P/N: 446179-53
Performance & Application
This CHRA is designed for 4-cylinder engine applications where responsive mid-range boost delivery is the priority. The ball bearing cartridge design supports quicker spool characteristics compared to journal bearing counterparts, making it well suited to street and performance builds targeting strong drivability alongside meaningful power gains. It’s a solid foundation for enthusiasts building or rebuilding a GT2860R turbocharger who want factory Garrett internals with a known performance ceiling.
Frequently Asked Questions
- What HP can the GT2860R Special CHRA support?
- This CHRA is rated to support 300+ HP applications on 4-cylinder engines.
- Is this a ball bearing or journal bearing CHRA?
- This is a ball bearing cartridge assembly.
- What is the A/R ratio of the turbine housing?
- The turbine housing uses a .86 A/R ratio.
- What does GT2860R Special refer to?
- GT2860R Special is the product name associated with Garrett P/N 446179-5053S, also referenced under P/N 446179-0053s and 446179-53.
For builders who need genuine Garrett ball bearing internals matched to a proven 64mm/60mm wheel configuration, the GT2860R Special CHRA delivers the mid-range punch and reliability that serious 4-cylinder builds demand.
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