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THE ALL NEW
GARRETT® G SERIES
TURBOCHARGERS
A TURN AHEAD OF THE COMPETITION


G25-550 · G25-660
G30-660 · G30-770
G42-1200C · G42-1200 · G42-1450


G Series turbochargers feature the latest innovations in turbocharger technology. Advanced compressor and turbine aero offer enthusiasts a wide range of performance boosting solutions for 2.0L - 8.0L engine platforms. Standard and reverse rotation options are offered with a variety of turbine housing configurations making it easy to select the right turbocharger for your application.

"Spools Like a 28 With the Power of a 30"


Garrett® G Series Highlights:
  • EVOLUTIONARY ULTRA HIGH FLOW G-Series Turbine Wheel
  • Advanced aerodynamics G Series Compressor Wheel
  • Fully machined speed sensor and pressure ports
  • Oil restrictor and water fittings included with purchase
  • One piece center housing and backplate for increased durability
  • Compact Standard Package
  • 4 water jacket ports for customizable installation
  • Ball Bearing CHRA Rotating Assembly
  • Standard & Reverse rotation (spins counterclockwise) options
  • Mar-M turbine wheel material rated up to 1050° C | 1922° F
  • Stainless steel turbine housings for temperatures up to 1050° C | 1922° F
  • The Results: +20% More Horsepower & Quicker Spool!!!


Garrett® G Series Turbine Wheel:
    By incorporating the latest and advanced ULTRA HIGH FLOW aerodynamic designs within the Garrett G Series Turbine Wheel, G Series models offer previously unimagineable power levels by frame size and improvements in spool! Made from Mar-M super alloy, the G Series Turbine Wheel withstands up-to 1050 degrees Celsius; +200 degrees Celsius over inconel turbine wheels.

Garrett® G Series Compressor Wheel:
    Forged fully-machined compressor wheel and new aerodynamics design increases maximum horsepower output, up to +30%. The G-Series aero design not only increases peak flow but higher power levels within a large operating RPM range.

Garrett® G Series Turbine Housings:
    Standard Garrett Stainless Steel material. V-band CHRA to Turbine Housing interface for a full 360 degree rotation. Available in T25 and V-Band inlet options; and internal or external wastegate configurations. Additional turbine housing options coming soon!

Garrett® G Series Additional Features:
  • Includes oil feed and coolant fittings.
  • Reduced size bearing cartridge and twin piston rings on both sides of the wheel assembly for increased durability and reduction in oil leakage.
  • Pre-tapped speed sensor port and boost pressure signal port.
  • NEW compact design bearing housing and CHRA to Turbine Housing V-band Connection.
  • NEW and improved oiling and cooling system.

Garrett® G Series Models:

G25-550 · G25-660
G30-660 · G30-770
G42-1200C · G42-1200 · G42-1450



G25-550
Compressor Turbine
Inducer Exducer Trim A/R
48mm 60mm 65 0.70
Inducer Exducer Trim
54mm 49mm 84
Assembly Kit PNSuper Core PNTurbine Kit PNA/RInlitOutletWastegateDivided
871389-5001S858161-5002S740902-00800.49T25V-BandYesNo
871389-5002S858161-5002S740902-00760.72V-BandV-BandYesNo
871389-5003S858161-5002S740902-00770.92V-BandV-BandYesNo
871389-5004S858161-5002S740902-00690.72V-BandV-BandNoNo
871389-5005S858161-5002S740902-00680.92V-BandV-BandNoNo
Reverse Rotaton
871390-5002S871399-5001S740902-00780.72V-BandV-BandYesNo
871390-5003S871399-5001S740902-00790.92V-BandV-BandYesNo
871390-5004S871399-5001S740902-00730.72V-BandV-BandNoNo
871390-5005S8871399-5001S740902-00740.92V-BandV-BandNoNo
Click to Buy Flow Map Compressor Map Dimensional Drawing



G25-660
Compressor Turbine
Inducer Exducer Trim A/R
54mm 67mm 65 0.70
Inducer Exducer Trim
54mm 49mm 84
Assembly Kit PNSuper Core PNTurbine Kit PNA/RInlitOutletWastegateDivided
871389-5007S858161-5003S740902-00800.49T25V-BandYesNo
871389-5008S858161-5003S740902-00760.72V-BandV-BandYesNo
871389-5009S858161-5003S740902-00770.92V-BandV-BandYesNo
871389-5010S858161-5003S740902-00690.72V-BandV-BandNoNo
871389-5011S858161-5003S740902-00680.92V-BandV-BandNoNo
Reverse Rotaton
871390-5008S871399-5002S740902-00780.72V-BandV-BandYesNo
871390-5009S871399-5002S740902-00790.92V-BandV-BandYesNo
871390-5010S871399-5002S740902-00730.72V-BandV-BandNoNo
871390-5011S871399-5002S740902-00740.92V-BandV-BandNoNo
Click to Buy Flow Map Compressor Map Dimensional Drawing



G30-660
Compressor Turbine
Inducer Exducer Trim A/R
54mm 67mm 65 0.70
Inducer Exducer Trim
60mm 55mm 84
Assembly Kit PNSuper Core PNTurbine Kit PNA/RInlitOutletWastegateDivided
880697-5001S
0.61V-BandV-BandFree FloatNo
880697-5002S
0.83V-BandV-BandFree FloatNo
Reverse Rotaton
880698-5001S
0.61V-BandV-BandFree FloatNo
880698-5002S
0.83V-BandV-BandFree FloatNo
Click to Buy Flow Map Compressor Map Dimensional Drawing



G30-770
Compressor Turbine
Inducer Exducer Trim A/R
58mm 71mm 65 0.72
Inducer Exducer Trim
60mm 55mm 84
Assembly Kit PNSuper Core PNTurbine Kit PNA/RInlitOutletWastegateDivided
880697-5008S
0.61V-BandV-BandFree FloatNo
880697-5009S
0.83V-BandV-BandFree FloatNo
Reverse Rotaton
880698-5007S
0.61V-BandV-BandFree FloatNo
880698-5008S
0.83V-BandV-BandFree FloatNo
Click to Buy Flow Map Compressor Map Dimensional Drawing





G42-1200C
Compact
Compressor Turbine
Inducer Exducer Trim A/R
73mm 91mm 65 0.90
Inducer Exducer Trim
82mm 75mm 84
Assembly Kit PNSuper Core PNTurbine Kit PNA/RInlitOutletWastegateDivided
879779-5001S
1.01V-BandV-BandFree FloatNo
879779-5002S
1.15V-BandV-BandFree FloatNo
879779-5003S
1.28V-BandV-BandFree FloatNo
Click to Buy Flow Map Compressor Map Dimensional Drawing



G42-1200
Compressor Turbine
Inducer Exducer Trim A/R
73mm 91mm 65 0.85
Inducer Exducer Trim
82mm 75mm 84
Assembly Kit PNSuper Core PNTurbine Kit PNA/RInlitOutletWastegateDivided
879779-5007S
1.01V-BandV-BandFree FloatNo
879779-5008S
1.15V-BandV-BandFree FloatNo
879779-5009S
1.28V-BandV-BandFree FloatNo
Click to Buy Flow Map Compressor Map Dimensional Drawing



G42-1450
Compressor Turbine
Inducer Exducer Trim A/R
79mm 98mm 65 0.85
Inducer Exducer Trim
82mm 75mm 84
Assembly Kit PNSuper Core PNTurbine Kit PNA/RInlitOutletWastegateDivided
879779-5013S
1.01V-BandV-BandFree FloatNo
879779-5014S
1.15V-BandV-BandFree FloatNo
879779-5015S
1.28V-BandV-BandFree FloatNo
Click to Buy Flow Map Compressor Map Dimensional Drawing