Garrett G55 Turbine Housing Kits
From $1,240.89
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Garrett
Garrett G-Series G55-1850 85mm Turbocharger
$6,317.89
SPECIAL ORDER
TURBINE HOUSING
PRODUCT DETAILS
The G-Series G55-1850 85mm is one of Garrett's largest G-Series turbos. It uses a 16mm dual ceramic ball bearing cartridge in a one-piece aluminum center housing and is outline-interchangeable with GTX Gen II turbos. Garrett recommends 40 to 45 psi of oil pressure at maximum engine speed. Stainless steel turbine housings are sold separately as the variants below.
Garrett rates the G-Series G55-1850 85mm for 1,000 to 1,850 horsepower on 3.0 to 12.0 liter engines.
Key Specifications
- Series — G-Series
- Frame size — 55 frame
- Horsepower rating — 1,000–1,850 hp (Garrett rating)
- Engine displacement — 3.0–12.0 L
- Compressor wheel — 85 mm inducer, 133 mm exducer, 0.88 A/R housing
- Turbine wheel — 112 mm inducer, 106 mm exducer, 90 trim
- Bearing — Dual ceramic ball bearing (16mm cartridge)
- Maximum turbo speed — 84,000 rpm
- Supercore part number — 880547-5001S
Turbine Housing Options
Each turbine housing is listed by A/R (area-to-radius ratio), inlet flange, outlet and wastegate type. "Internal" housings have a built-in wastegate; "External" housings are free-float designs that require an external wastegate.
| Garrett part number | A/R | Inlet | Outlet | Wastegate | Divided |
|---|---|---|---|---|---|
| 761208-0069 | 1.24 | V-Band | V-Band | External | No |
| 761208-0070 | 1.40 | V-Band | V-Band | External | No |
| 761208-0071 | 1.00 | T6 | V-Band | External | No |
| 761208-0072 | 1.12 | T6 | V-Band | External | No |
| 761208-0073 | 1.24 | T6 | V-Band | External | No |
| 761208-0074 | 1.40 | T6 | V-Band | External | No |
Important Information
Garrett calculates its horsepower ratings from the compressor map choke flow, which represents the potential flywheel horsepower of the turbo. Actual results depend on the engine, supporting modifications and calibration.
Garrett sets the maximum allowable speed for this turbo at 84,000 rpm. Operating above that speed can damage the turbo and cause premature failure. A turbo speed sensor (sold separately) lets you monitor shaft speed.
For race vehicles only. Not for use on public roads.
Installation and Tuning Available at Race Protocol
Turbo system design, installation and dyno tuning are available in house. Call (724) 732-8948 to discuss your build.
