The Garrett GTX4594R is a large-frame dual ball bearing turbocharger built for serious horsepower goals, designed as a supercore that gives builders the flexibility to pair it with the turbine housing configuration their platform demands. It’s the choice for enthusiasts and shops upgrading from GT42, GTX42, or GT45 series turbos who need a direct external swap with significantly more capability. With a high-flowing, ported-shroud compressor housing and dual ball bearing core, this is a turbo built for drivers chasing four-figure power numbers without sacrificing the ability to dial in response.
Specifications
- Compressor Wheel Inducer: 70.3mm
- Compressor Wheel Exducer: 94mm
- Compressor Wheel Trim: 56
- Compressor Housing: 60 A/R
- Turbine Wheel Inducer: 87.0mm
- Turbine Wheel Exducer: 80.2mm
- Turbine Wheel Trim: 85 trim
- HP Capacity: Over 950HP
- Bearing Type: Dual Ball Bearing
- Compressor Inlet: 5″ Inlet
- Compressor Outlet: V-Band outlet (4.5″ outer diameter ring and 3.5″ tube)
- Compressor Feature: Built-in ported shroud (anti-surge)
- Turbine Housing Options: T4 (divided or undivided), T6 divided, or V-band Inlet
- Garrett P/N: GTX4594R
Performance & Application
The GTX4594R is engineered for builders targeting output beyond 950 horsepower, making it a natural fit for high-boost, high-displacement applications where big top-end flow is the priority. Its externally interchangeable design with GT42, GTX42, and GT45 series turbos means it drops into existing large-frame setups without requiring a full system redesign. The built-in ported shroud compressor housing helps manage surge at the boundaries of its flow map, giving tuners more usable range when pushing this turbo hard. Because it ships without a turbine housing, this supercore is best suited to builders who already know which T4, T6, or V-band housing configuration their application requires.
Frequently Asked Questions
- What HP can the GTX4594R support?
- The GTX4594R is capable of supporting over 950HP.
- Is the GTX4594R a ball bearing or journal bearing turbo?
- The GTX4594R is a dual ball bearing turbocharger from Garrett’s GTX-R series.
- What turbochargers is the GTX4594R interchangeable with?
- The GTX4594R is externally interchangeable with GT42, GTX42, and GT45 series turbochargers.
- What turbine housing options are available for the GTX4594R?
- It is available in T4 (divided or undivided), T6 divided, or V-band Inlet turbine housings, sold separately from this supercore.
For builders who demand a proven large-frame platform capable of exceeding 950 horsepower while retaining the flexibility to match their exact turbine housing needs, the Garrett GTX4594R delivers the performance ceiling and engineering pedigree to back it up.
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