The CHRA-GT42R is a complete center housing rotating assembly built for enthusiasts who demand serious top-end power from a proven Garrett ball bearing platform. Designed as a core replacement or rebuild solution, this unit suits builders chasing maximum airflow and boost response on large-displacement applications. It’s the trusted choice for those who want factory Garrett engineering without compromise.
Specifications
- Compressor Wheel: 76mm
- Turbine Wheel: 68mm
- Turbine Housing A/R Ratio: 0.70
- Bearing Type: Ball Bearing
- HP Capacity: 550+ hp
- Garrett P/N: 451888-5009S
- Also Known As: GT4294R
Performance & Application
This CHRA is built for large-displacement naturally aspirated engines seeking maximum boost response and flow. The ball bearing construction delivers quicker spool and sharper throttle response compared to traditional journal bearing designs, while the turbine wheel and housing combination supports strong high-rpm power delivery. This makes it an ideal high-performance upgrade for enthusiasts pushing well beyond stock power levels.
Frequently Asked Questions
- What HP can the GT4294R CHRA support?
- This CHRA is rated for 550+ hp capacity.
- Is this a ball bearing or journal bearing unit?
- The GT4294R CHRA uses proven ball bearing construction.
- What is the A/R ratio of the turbine housing?
- This unit uses a 0.70 A/R turbine housing.
- What does GT4294R refer to?
- GT4294R is the alias for the Garrett GT42R CHRA, Garrett P/N 451888-5009S.
For builders demanding proven Garrett ball bearing reliability and 550+ hp capacity from a large-displacement setup, the CHRA-GT42R delivers exactly the performance foundation the build requires.
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