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PRODUCT DETAILS
The GBC20-300 39mm is part of the Garrett Boost Club (GBC) line of journal bearing turbos for smaller-displacement engines. It is sold as a complete turbo with an internally wastegated turbine housing and an actuator calibrated to 0.5 bar; 1.0 bar and 1.5 bar actuators are available separately. The billet compressor wheel uses an extended-tip design for higher pressure ratio capability.
Garrett rates the GBC20-300 39mm for 170 to 300 horsepower on 0.8 to 2.0 liter engines.
Key Specifications
- Series — GBC (Garrett Boost Club)
- Frame size — 20 frame
- Horsepower rating — 170–300 hp (Garrett rating)
- Engine displacement — 0.8–2.0 L
- Compressor wheel — 39 mm inducer, 52 mm exducer, 0.59 A/R housing
- Turbine wheel — 47 mm inducer, 42 mm exducer, 84 trim
- Maximum compressor flow — 29 lb/min (Garrett)
- Base boost, complete turbo — 7.3 psi (0.5 bar actuator)
- Maximum pressure ratio — 3.7 (about 39.7 psi of boost at sea level)
- Bearing — Journal bearing
- Complete turbo part number (standard rotation, 0.55 A/R) — 896053-5003S
Related Garrett Parts
- 480009-0009 — Wastegate actuator, 0.5 bar (Included)
- 480009-0006 — Wastegate actuator, 1.0 bar
- 480009-0010 — Wastegate actuator, 1.5 bar
- 447802-0001 — T25 Inlet Gasket
- 770119-0001 — 5 Bolt Outlet Gasket
- 409036-0001 — Oil Outlet Gasket
- Consumer Sourced — Oil Inlet Gasket
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.
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.
