GTX4720R GEN II Turbocharger

Horsepower: 1025 - 1950

Displacement: 2.5L - 10.0L

Features

  • GEN II compressor wheel aerodynamics
  • 9% increased flow
  • 76mm, 80mm, 88mm inducer configurations
  • Larger .88 A/R compressor housing volute
  • GTX4720R 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

GTX4720R GEN II

Reference Data

The latest Garrett technologies featuring many advanced features.

GTX4720R GEN II | Reference DataCompressorTurbine
Super Core PNReplacesInducerExducerTrimA/RInducerExducerTrim
851285-5013SNEW76mm120mm410.8893mm84mm82
851285-5014SNEW80mm120mm450.8893mm84mm82
851285-5015S804878-5007S88mm120mm540.8893mm84mm82
Notes:Turbine Kit PNA/RInletOutletWastegateDividedTrim
Super Core and Turbine Kit Sold Separately761208-00090.96T6V-BandFree FloatN82
761208-00101.08T6V-BandFree FloatN82
761208-00111.23T6V-BandFree FloatN82
761208-00121.39T6V-BandFree FloatN82

GTX4720R GEN II

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

GTX4720R GEN II

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