GTX4088R Turbocharger
Horsepower: 460 - 850
Displacement: 2.0L - 6.0L
Features
- FEATURES ORIGINAL GTX COMP WHEEL AERODYNAMICS
- 65mm COMPRESSOR INDUCER
- SUPERCORE AND TURBINE KIT SOLD SEPARATELY
- AVAILABLE ONLY WITH T4 DIVIDED TURBINE HOUSINGS
WARNING: Maximum allowable turbocharger speed is 125krpm. The use of this product above max turbocharger speed is at the owner’s risk, and can result in damage and premature failure. To protect the turbocharger from overspeed when operating, a speed sensor can be installed into the compressor housing to monitor shaft speed. Sensors sold separately. (click here for details)
Performance results of this product are highly dependent upon your vehicle’s modifications and tuning/calibration. The horsepower numbers represented above are calculated based strictly on choke flow of the compressor map (total turbo capability), which represents the potential flywheel horsepower.

GTX4088R 65mm
Reference Data
GTX4088R | Compressor | Turbine | |||||
---|---|---|---|---|---|---|---|
Inducer | Exducer | Trim | A/R | Inducer | Exducer | Trim | |
HP: 460-850 Disp: 2.0L-6.0L | 65mm | 88mm | 54 | 0.72 | 77mm | 68mm | 78 |
Supercore | PN | ||||||
Standard Rotation | 825614-5005S | ||||||
Turbine Kits: GTX40 | PN | A/R | Inlet | Outlet | Wastegate | Divided | |
Interchangeable with GT | GTX 4088 Supercores | 773628-0011 | 0.95 | T4 | V-Band | Free Float | Y | |
773628-0013 | 1.19 | T4 | V-Band | Free Float | Y |
GTX4088R 65mm
Compressor Map & Exhaust Flow Chart
Compressor Map

Exhaust Flow Chart

About Garrett GTX Series Turbochargers
Garrett GTX Series turbochargers are designed specifically for the hard-core enthusiast who wants optimal performance. The forged fully-machined billet aluminum compressor wheels feature next generation aerodynamics that provide a larger horsepower range and maximize boost response.
Ported shroud compressor housings increase surge resistance and provide reliable, continuous power throughout the power band. A dual ceramic ball bearing cartridge prolongs the lifespan and improves shaft balance. The water cooled CHRA keeps housing temperatures to a minimum. The turbine wheel is constructed from Inconel, a Super Alloy that maintains strength during prolonged exposure to high exhaust gas temperatures.
Turbine kits are offered in open volute and twin scroll, and a variety of A/R and flange configurations. GTX Series turbochargers are used by today’s top motorsports teams and are ready to boost you to the podium or wherever your destination may be.