Garrett® G Series 42 turbochargers offer enthusiasts a new range of quick spooling, high horsepower solutions for 2.0 liter up to 8.0 liter engine platforms. The G42-1200 Compact, G42-1200, and G42-1450 turbochargers produce up to 1450 horsepower thanks to the ten blade, forged, fully-machined G Series compressor wheel with high flowing aero. These low inertia compressor wheels are smaller in size and weight resulting faster boost response. (compared to GTX42) Garrett® G42-1200 is available in standard V-band, and compact compressor housing options. The V-band compressor housing is outline interchangeable with GTX42 while the new Compact option is 4mm shorter axially and 29mm smaller radially (FigA). The G Series turbine wheel features all new aerodynamics to improve flow and boost response. New turbine aero wheel flows 10% more and has peak efficiency of 77% (Compared to GTX42 at 74% with 1.01A/R). Engineered with inconel super alloy to withstand operating temperatures up to 950C. Stainless steel turbine housings are available with V-band inlet and outlet connections in free float mono-scroll options. Divided, free float, T4 turbine housings will be available in 2019.
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G Series Naming
- To differentiate a new generation of turbochargers.
- Frame size is our most common identifier (GT30 | GT35 ect)
- Identify max power capability.
- Garrett® to be used before all turbo models (Garrett®G42-1200| Garrett® G42-1450)
- IP- model names and numbers are hard to protect.
- TM protects brands | ® protects the appearance, not the function
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- Internally nothing changes in 3D drive or to part numbers. Naming is an external facing change.
- - 9 assembly kit part numbers
- - 3 V-band turbine A/R
- - 1.01 | 1.15 | 1.28
- - Non-wastegated / free float
- - Monoscroll / Open Volute
- - Standard rotation only
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T4 Divided turbine housing options coming Q1 2019.
G42-1200 Compact
- - G Series compressor aero (10 blade)
- - 109 Lbs/Min compressor flow
- - 0.90 A/R comp housing
- - Hose connection comp outlet
- - Water fittings included (-6an fittings *same as G25)
- - Stainless steel turbine housings rated up to 950 deg C
- - Compact design is 4mm smaller axially than the G42 standard
Garrett G42-1200
- G Series compressor aero (10 blade)
- 109 Lbs/Min compressor flow
- 0.85 A/R comp housing
- V-band comp outlet 4.2 inch / 107mm (Same as GTX42 5 inch / 127mm compressor inlet (Same as GTX42)
- Water fittings included (-6an fittings *same as G25)
- Stainless steel turbine housings rated up to 950 deg C
Garrett G42-1450
- G Series compressor aero (10 blade)
- 131 Lbs/Min compressor flow
- 0.85 A/R comp housing
- V-band comp outlet 4.2 inch / 107mm (Same as GTX425 inch / 127mm compressor inlet (Same as GTX42)
- Water fittings included (-6an fittings *same as G25)
- Stainless steel turbine housings rated up to 950 deg C
Product Range
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Technology and Features Compressor Aero
- CFD (computational fluid dynamics) engineered compressor wheel
- Optimized blade contour with 10 blade count
- Forged and fully-machined compressor wheel
- More power and faster boost response
- Smaller wheel = lower inertia
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Technology and Features Compressor Housing
Garrett® G42-1200 available with compact housing and standard housing
Garrett® G42-1450 available only with standard housing
- (A) Fully machined ported shroud to help reduce compressor surge.
- (B) A fully machined speed sensor port provides racers the option to add a speed sensor. Comparing shaft speed and boost levels on a compressor map will help determine ideal operating conditions to ensure peak power over a wider operating range.
- (C ) The fully machined pressure port. Sold separately, the Garrett ® G Series speed sensor kits have new part numbers and are not compatible with GT/GTX kits. Easier to install and will not need to be adjusted for length like previous sensors. Simply remove bolt that secures the plug, insert the speed sensor and re-tighten the bolt.
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Speed Sensor Kits
G Series Street Kit: 781328-0003 (includes speed sensor, wire harness, gauge)
G Series Pro Kit: 781328-0004 (includes speed sensor, wire harness)
Technology and Features Center Housing
- Aluminum backplate for reduced weight (GTX42 Steel)
- Includes (2) -6AN water fittings
- Center housing to turbine housing Vband connection makes installation
easy for installers. (Same Vband as GTX42 / GTX45)
- GTX and GT turbine housings are not interchangeable
- Full 360 degree orientation of compressor housing and non wastegated
turbine housings
- An o-ring between the compressor housing and backplate reduces any
boost pressure leakage
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Technology and Features Rotating Group
- Twin piston rings on both sides of the shaft reduce the likeliness
of oil leakage from the center housing to the compressor or
turbine stage.
- A new oil deflector redirects oil away from the compressor stage
seals reducing possibility of oil leakage through the seals.
- 10mm ceramic dual ball bearing cartridge (Same as GTX42)
Technology and Features G42 Turbine Aero
- The turbine wheel features all new aerodynamics to improve flow and boost
response.
- Inconel super alloy construction for temperatures up to 950C
- New turbine wheel flows 10% more and has peak efficiency of 77% (Compared
to GTX42 at 74% with 1.01A/R)
- 82mm inducer / 75mm exducer 84 Trim
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Technology and Features G42 Turbine Housings
- G42 turbine housings are made from stainless steel to provide ultimate durability and
temperature capability up 950 deg C degrees | 1742 deg F
- B&C qualified
- GTX and GT housings not interchangeable.
- Turbine housings are available in V-band, open, free float configurations for launch
- V-band inlet is 3.6 inch / 92mm ( compared to GTX30/35 3 inch / 76mm
- V-band outlet is 4.3 inch / 109mm
• T4 Divided turbine housing options coming Q1 2019.
| G42-1450 | |||||
| Turbo Assy Kit | Description | Model | SC P/N | A/R | TH P/N |
| 879779-5013S | Turbo Assembly Kit, O/V V-Band / V-Band 1.01 A/R | G42-1450 | 860778-5006S | 1,01 | 757707-0011 |
| 879779-5014S | Turbo Assembly Kit, O/V V-Band / V-Band 1.15 A/R | G42-1450 | 860778-5006S | 1,15 | 757707-0012 |
| 879779-5015S | Turbo Assembly Kit, O/V V-Band / V-Band 1.28 A/R | G42-1450 | 860778-5006S | 1,28 | 757707-0013 |
| 879779-5016S | Turbo Assembly Kit, Div T4 / V-Band 1.01 A/R | G42-1450 | 860778-5006S | 1,01 | 757707-0014 |
| 879779-5017S | Turbo Assembly Kit, Div T4 / V-Band 1.15 A/R | G42-1450 | 860778-5006S | 1,15 | 757707-0015 |
| 879779-5018S | Turbo Assembly Kit, Div T4 / V-Band 1.28 A/R | G42-1450 | 860778-5006S | 1,28 | 757707-0016 |
| G 42 SC & TH KIT | |||
| Component | Description | Model | Requirements |
| 860778-5002S | Supercore G Series 42-1200 Compact CHS | G42-1200c | MOQ |
| 860778-5004S | Supercore G Series 42-1200 | G42-1200 | MOQ |
| 860778-5006S | Supercore G Series 42-1450 | G42-1450 | MOQ |
| 757707-0011 | TH Kit, O/V V-Band / V-Band 1.01 A/R | G42 | |
| 757707-0012 | TH Kit, O/V V-Band / V-Band 1.15 A/R | G42 | |
| 757707-0013 | TH Kit, O/V V-Band / V-Band 1.28 A/R | G42 | |
| 757707-0014 | TH Kit, Div T4 / V-Band 1.01 A/R | G42 | |
| 757707-0015 | TH Kit, Div T4 / V-Band 1.15 A/R | G42 | |
| 757707-0016 | TH Kit, Div T4 / V-Band 1.28 A/R | G42 |
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