The Garrett G42-1200C Turbo Assembly Kit is built for enthusiasts and race-focused builders who demand serious top-end power without sacrificing a compact footprint. Featuring a T4 divided turbine housing and ball bearing construction, this kit is engineered for high-output applications where response and durability matter equally. It’s the choice for builders who need a proven, high-capacity turbo solution in a space-conscious package.
Specifications
- Compressor Wheel Inducer: 73mm
- Compressor Wheel Exducer: 91mm
- Compressor Wheel Trim: 65
- Compressor Housing A/R: 0.90
- Compressor Inlet: 4″ hose connection
- Compressor Outlet: 3″ hose connection
- Turbine Wheel Inducer: 82mm
- Turbine Wheel Exducer: 75mm
- Turbine Wheel Trim: 84
- Turbine Housing A/R: 1.01 T4 Divided
- Bearing Type: Ball Bearing
- HP Capacity: 1200HP
- Design: Compact CHS
- Garrett P/N: 879779-5004S
- Also Known As: G42-1200C
Performance & Application
The G42-1200C is engineered for builds targeting serious power figures, with the ball bearing core delivering sharp response and efficient spool characteristics. The divided T4 turbine housing is designed to maintain exhaust pulse energy for improved turbine drive and quicker transient response. Its compact CHS (Compressor Housing Shape) design makes it well suited for tight engine bays without compromising the flow capacity needed to support its high horsepower rating. This turbo is built for platforms pushing into serious performance territory where both response and top-end capability are required.
Frequently Asked Questions
- What HP can the Garrett G42-1200C support?
- The G42-1200C is capable of supporting up to 1200HP.
- Is the G42-1200C a ball bearing or journal bearing turbo?
- The G42-1200C features ball bearing construction.
- What turbine housing configuration does the G42-1200C use?
- It uses a 1.01 A/R T4 divided turbine housing.
- What are the inlet and outlet connections on the G42-1200C?
- The compressor housing features a 4″ inlet and 3″ outlet hose connection.
For builders chasing four-digit horsepower goals in a compact, efficient package, the Garrett G42-1200C delivers proven engineering backed by a genuine Garrett part number.

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