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GTX3071R GEN II Reverse Rotation Turbocharger

Horsepower: 340 - 650

Displacement: 1.8L - 3.0L


  • GTX3071R Gen II Reverse Rotation Supercore PN: 844621-5003S

WARNING: Maximum allowable turbocharger speed is 140krpm. 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.


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“Garrett Performance Kits are professional aftermarket products only designed for certain racing vehicles driven on particular racing tracks and shall only be used on racing vehicles that will never be driven on public roads or highways. Garrett Performance Kits are not legal for the use in vehicles on public roads or other roads to which public road law applies. Any vehicle modifications using Garrett Performance Kits are AT YOUR OWN RESPONSIBILITY and AT YOUR OWN RISK. Only use Garrett Performance Kits in compliance with all applicable laws, regulations, and ordinances (including but not limited to emission, noise, operating license, performance, safety, and type-approval aspects). A vehicle modification using Garrett Performance Kits may particularly affect or void a vehicle’s warranty, operating license or type-approval. Moreover, only use Garrett Performance Kits in compliance with all applicable racing and racing track provisions. It is YOUR OWN RESPONSIBILITY AND RISK to ensure that your Garrett Performance Kit fits your vehicle and area of application. YOU MUST ENSURE LAWFUL AND SAFE OPERATIONS AT ANY TIME. You should particularly consult the owner’s manual and service manual of your vehicle. You should also contact your vehicle’s manufacturer to determine what effects modifications may have on important aspects such as safety, warranty, performance, etc. Only install and use Garrett Performance Kits if you have fully read and understood this important safety information and if you fully agree with the terms and conditions set forth therein.”

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GTX3071R GEN II 54mm Reverse Rotation

Reference Data

GTX3071R GEN II Compressor Turbine
Inducer Exducer Trim A/R Inducer Exducer Trim
HP: 340-675 Disp: 1.8L-3.0L 54mm 71mm 58 0.60 60mm 55mm 84
Supercore Assembly Kit Turbine Kit A/R Inlet Outlet Wastegate Divided
851154-5002S 856801-5006S 740902-0009 0.63 T3 V-Band Free Float N
856801-5005S 740902-0008 0.82 T3 V-Band Free Float N
740902-0007 1.06 T3 V-Band Free Float N
856801-5018S 740902-0036 0.61 V-Band V-Band Free Float N
856801-5017S 740902-0035 0.83 V-Band V-Band Free Float N
740902-0034 1.01 V-Band V-Band Free Float N
771300-0006 0.63 T3 5 bolt Wastegated N
Assembly Kit PN Includes 771300-0005 0.82 T3 5 bolt Wastegated N
Supercore and Turbine Kit 771300-0004 1.06 T3 5 bolt Wastegated N
Reverse Rotation Supercore Turbine Kit A/R Inlet Outlet Wastegate Divided
844621-5003S 740902-0053 0.61 V-Band V-Band Free Float N
740902-0054 0.83 V-Band V-Band Free Float N
740902-0055 1.01 V-Band V-Band Free Float N

GTX3071R GEN II 54mm Reverse Rotation

Download Section

File Name Link View
Configuration Guide Download View
File Name Link View
Compressor Map Download View
Exhaust Flow Chart Download View
Product Photo Download View
Flange Diagram Download View
Speed Sensor Kit Installation Instruction Download View

GTX3071R GEN II 54mm Reverse Rotation

Compressor Map & Exhaust Flow Chart

Compressor Map

Exhaust Flow Chart

GTX GEN II: The Next Generation in Turbocharging Technology

Garrett Motion is excited to introduce the GTX3071R GEN II Reverse Rotation Turbocharger. The GTX GEN II is the next evolution of our GTX line with major updates and new technology. Updates include a compressor wheel aero update that gives it the ability to produce up to 20% more horsepower than the previous version.

Redeveloped Compressor Wheels

GTX GEN II compressor wheels were designed using proprietary Garrett Motion computer simulation technology focusing on CFD analysis to optimize the wheel design to reach maximum efficiency and mass flow for each turbocharger.

Each GTX GEN II turbocharger can create more air mass flow, offering enthusiasts a wider range of power output when tuning the vehicle. The 8mm dual ceramic ball bearing cartridge provides optimal turbo response and reliability through its reduction in shaft motion.

Fully-Machined Inlet, Outlet and Shroud

The GEN II GTX Series Turbochargers feature a fully-machined compressor inlet, fully-machined compressor outlet, and fully-machined ported shroud for precise and accurate tolerances.

Redesigned High-Flowing Compressor Housing

We also added a brand-new compressor housing featuring a high-flowing design matched perfectly for the new compressor wheel upgrade. GEN II compressor housings are not interchangeable with GEN I compressor wheels; however, all GEN II turbochargers are outline interchangeable with the equivalent GT and GTX GEN I products making a turbo swap easy to perform using all existing piping.

Fully-Machined Speed Sensor Port

The new compressor housings are equipped with a fully machined speed sensor port that accepts the Garrett Motion speed sensor (Sold separately). This feature allows tuners to understand existing operating conditions, which is important when fine-tuning a turbocharger to its most efficient operating conditions. The speed sensor port comes plugged from the factory and can be removed using a 5mm Allen key when ready to install a speed sensor kit.

Cross Compatibility Turbo Turbine Housing Kit Platform

All GEN II GTX series turbochargers are compatible with all existing GT and GTX turbine housings kits. GEN II turbochargers are only offered through Garrett Motion authorized distribution centers.

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