The Garrett G42-1200C Turbo Assembly Kit is engineered for builders who demand serious top-end power without sacrificing the compact packaging needed for tight engine bays. This T4 divided, ball-bearing turbocharger is built for high-horsepower applications where a Garrett G Series turbo’s advanced aerodynamics and durability are non-negotiable. Whether you’re building a dedicated race platform or a high-output street/strip combination, this assembly delivers the capacity and response profile that serious performance enthusiasts require.

Specifications

• Compressor Wheel Inducer: 73mm
• Compressor Wheel Exducer: 91mm
• Compressor Wheel Trim: 65
• Compressor Housing A/R: 0.90
• Compressor Inlet Connection: 4″ hose connection
• Compressor Outlet Connection: 3″ hose connection
• Turbine Wheel Inducer: 82mm
• Turbine Wheel Exducer: 75mm
• Turbine Wheel Trim: 84
• Turbine Housing A/R: 1.28
• Turbine Housing Flange: T4 Divided
• Bearing Type: Ball Bearing (Compact CHS)
• HP Capacity: 1200hp
• Model Designation: G42-1200C
• Garrett P/N: 879779-5006S

Performance & Application

The G42-1200C is built around a compact ball-bearing core, giving builders a turbocharger capable of supporting massive horsepower targets while retaining a footprint that suits packaging-constrained installations. Its T4 divided turbine housing configuration is matched with a compressor side optimized for large-frame hose connections, supporting the airflow demands of high-boost, high-output combinations. This assembly is suited to builders targeting serious top-end power who still need the turbo to fit within a compact engine bay envelope. It represents the higher end of the G42 lineup’s capacity range, making it a strong fit for dedicated performance and race-oriented builds.

Frequently Asked Questions

What HP can the G42-1200C support?

The G42-1200C delivers 1200hp capacity.

Is this a ball bearing or journal bearing turbo?

The G42-1200C features a compact ball-bearing design.

What is the turbine housing A/R ratio and flange type?

It uses a T4 divided turbine housing with a 1.28 A/R.

What are the compressor inlet and outlet sizes?

The compressor housing features a 4″ inlet and 3″ outlet hose connections, with a 0.90 A/R.

For builders targeting a 1200hp capacity in a compact, ball-bearing package, the Garrett G42-1200C Turbo Assembly Kit (P/N 879779-5006S) delivers the proven G Series engineering needed to get there.