The Garrett G42-1450 Turbo Assembly Kit is engineered for serious high-output builds where response and top-end power both matter. Featuring a T4 divided turbine housing, this configuration is built for enthusiasts and professional tuners pushing engines toward the upper limits of forced induction. It’s the choice for those who demand a turbocharger that can deliver massive power without sacrificing drivability.
Specifications
- Compressor Wheel Inducer: 79mm
- Compressor Wheel Exducer: 98mm
- Compressor Wheel Trim: 65
- Compressor Housing A/R: 0.85
- Turbine Wheel Inducer: 82mm
- Turbine Wheel Exducer: 75mm
- Turbine Wheel Trim: 84
- Turbine Housing A/R: 1.28
- Turbine Housing Flange Type: T4 Divided
- Bearing Type: Ball Bearing
- HP Capacity: 1450HP
- Garrett P/N: 879779-5018S
Performance & Application
This G42-1450 configuration is built for high-output applications where sustained boost and peak power capability are the priority. The ball bearing construction delivers aggressive boost response, allowing this turbo to spool efficiently while still supporting massive top-end output. The 1.28 A/R T4 divided turbine housing is suited to builds that demand strong exhaust energy management alongside serious power potential. This assembly is well suited for enthusiasts targeting elite horsepower levels on demanding, high-performance builds.
Frequently Asked Questions
- What HP can the Garrett G42-1450 support?
- This turbo assembly is capable of supporting up to 1450HP.
- Is this a ball bearing or journal bearing turbo?
- The Garrett G42-1450 features ball bearing construction, which delivers aggressive boost response.
- What is the turbine housing A/R and flange type?
- This kit uses a 1.28 A/R T4 divided turbine housing.
- What is the compressor housing A/R ratio?
- The compressor housing A/R ratio is 0.85.
For builds that demand elite horsepower capability backed by Garrett’s proven engineering, the G42-1450 with its 1.28 A/R T4 divided housing stands as a definitive choice for high-output performance applications.

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