The Garrett GTX4508R-C is a compact-frame evolution of the GT45 platform, built for competition and high-horsepower street applications where drop-in compatibility with existing GT42 hardware is essential. It delivers the internal upgrades of the GTX4508R lineup while retaining GT42 external fitment, making it the choice for racers who need more flow and boost capacity without redesigning their turbo system. This is the latest ball bearing GTX-R evolution of the GT45 range, engineered to flow more horsepower and handle significantly more boost than its predecessor.
Specifications
- Compressor Wheel Exducer: 108.0mm
- Compressor Wheel Inducer: 79.8mm
- Compressor Trim: 55 trim
- Compressor Housing A/R: .69 A/R
- Turbine Wheel: 87.0mm
- Turbine Trim: 85 trim
- Turbine Housing A/R: 1.02 A/R
- Other Turbine Housing A/R Options: 1.01, 1.15, 1.28, 1.44 A/R
- Turbine Housing Flange: TiAl Stainless V-Band
- Frame Size: Compact GT42 Frame
- Bearing Type: Ball Bearing
- HP Capacity: 1400HP
- Garrett P/N: 800270-5001S
- Alternate P/N: 451888-0045
Performance & Application
Designed for race-season builds demanding maximum efficiency and boost capacity, the GTX4508R-C combines GT42-size external fitment with full GTX4508R internals, allowing it to drop directly into existing GT42 turbo systems. The compact GT42-style compressor housing and compact TiAl stainless V-band turbine housing are engineered to turn up power without requiring a fitment overhaul. This configuration is built for enthusiasts and race teams pushing serious horsepower who need a turbocharger capable of handling substantially more boost than standard GT42 offerings. It’s the right unit for those upgrading an existing GT42 platform who want more flow and top-end capability while keeping installation straightforward.
Frequently Asked Questions
- What HP can the GTX4508R-C support?
- This unit is capable of 1400HP.
- Is the GTX4508R-C a ball bearing turbo?
- Yes, it is part of the latest ball bearing GTX-R series of the GT45 range.
- What turbine housing A/R is used, and are other options available?
- The featured configuration uses a 1.02 A/R TiAl stainless V-band turbine housing, with other turbine housing A/R sizes available in 1.01, 1.15, 1.28, and 1.44.
- Will the GTX4508R-C fit existing GT42 turbo systems?
- Yes, it features GT42 size external fitment with all GTX4508R internals, allowing it to drop into existing GT42 setups.
For racers and high-horsepower builds already running GT42 fitment, the GTX4508R-C delivers a direct upgrade path to more flow, more boost, and 1400HP capability without reworking your turbo system.
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