GTX5020R GEN II Turbocharger

Horsepower: 1075 - 2050

Displacement: 2.8L - 11.0L


• GEN II compressor wheel aerodynamics
• 9% increased flow
• 76mm, 80mm, 88mm inducer configurations
• Larger .88 A/R compressor housing volute
• GTX5020R features a 120mm comp exducer ( + 2 mm) and has 30% lower inertia*.
• Super core and turbine housing sold separately
• Compatible with GT and GTX turbine housings


Reference Data

The latest Garrett technologies featuring many advanced features.

GTX5020R GEN II | Reference DataCompressorTurbine
Super Core PNReplacesInducerExducerTrimA/RInducerExducerTrim
Notes:Turbine Kit PNA/RInletOutletWastegateDividedTrim
Super Core and Turbine Kit Sold Separately761208-00300.96T6V-BandFree FloatN84
761208-00331.39T6V-BandFree FloatN84


Download Section

The latest Garrett technologies featuring many advanced features.

File NameLinkView
Configuration GuideDownloadView
File NameLinkView
Compressor MapDownloadView
Exhaust Flow ChartDownloadView
Product PhotoDownloadView
Flange DiagramDownloadView
Speed Sensor Kit Installation InstructionDownloadView


Compressor Map & Exhaust Flow Chart

The latest Garrett technologies featuring many advanced features.

Compressor Map

Exhaust Flow Chart

Gen II Compressor Wheel Dimensions and Aerodynamics

GTX4709R GTX5009R Available in 76mm and 80mm inducer diameters

  • Comp exducer is now 109mm (+1mm vs Gen I)
  • Gen II wheel produces 15% more air flow
  • 39% lower inertia

GTX4720R GTX5020R Available in 76mm, 80mm, and 88mm inducer diameters

  • Comp exducer is now 120mm (+2mm vs Gen 1)
  • Gen II wheel produces 9% more air flow
  • 30% lower inertia
  • Reduced inertia due to reduction of material in the hub and blades
  • Roughly 20% lower mass
  • Lower inertia helps make boost faster and increases overall turbo efficiency
  • Increased flow has potential to make more power at same boost or same power at lower boost levels

Larger Comp Exducer on Gen II

.88 A/R Compressor Housing

Gen II features a larger .88 A/R (Gen I .69 A/R)

  • This helps maximize the power capacity of the new compressor wheel.
  • This is also the same compressor housing used on the GTX5533R (85mm and 88mm)

Larger Compressor Volute

.88 A/R Compressor Housing

Gen II features a larger .88 A/R compressor housing that will cause an increase in outline dimensions only on the cold side of the turbo.

  • +6mm longer on the comp outlet Fig. A
  • +10mm longer on the comp inlet Fig. B
  • Comp outlet diameter 107mm (same)
  • Not outline interchangeable with gen 1

Dimensional Compressor Measurements vs. Gen I

Additional Features

  • Lightweight billet backplate
  • (NEW) Backplate to compressor housing O-ring
  • Speed sensor port compatible only with new flange style speed sensors: (pn 781328-0003 Street Kit | pn 781328-0004 Pro)

Compatible only with New G Series Speed Sensor

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.