The Garrett GTW3884JB is a journal bearing turbocharger built for enthusiasts who want serious power without stepping up to the cost or complexity of a ball bearing setup. Part of Garrett’s GTW Series, it’s engineered as a performance-focused alternative to the popular 6466 size turbo, delivering strong flow characteristics at a competitive price point. This is the right choice for builders who want proven Garrett engineering paired with practical value.
Specifications
- Compressor Wheel Inducer: 62.3 mm
- Compressor Wheel Exducer: 84.4 mm
- Compressor Wheel Trim: 58
- Turbine Wheel Inducer: 74.2 mm
- Turbine Wheel Exducer: 64.6 mm
- Turbine Wheel Trim: 76
- A/R Ratio: .95 A/R T4 Divided
- Bearing Type: Journal Bearing
- Turbine Housing: T4 Divided with 3″ GT V-band exit
- Compressor Housing Frame: T04S Frame
- Compressor Inlet: 4″
- Compressor Outlet: 2.5″
- Anti-Surge: Built-in & machined anti-surge
- HP Potential: 900 HP potential flow
- Garrett P/N: GTW3884JB
- Also Known As: GTW6265JB
Performance & Application
The GTW3884JB is designed for high-horsepower builds seeking a durable, cost-effective journal bearing solution capable of supporting serious power levels. Its T4 divided turbine housing with a 3″ V-band exit is built for enthusiasts running divided exhaust manifolds who want efficient exhaust pulse separation. The T04S compressor housing with a large inlet and integrated anti-surge feature is tuned to support strong top-end flow while maintaining compressor stability. This turbo suits builders targeting big power numbers who want a proven GTW Series solution rather than a custom or ball bearing unit.
Frequently Asked Questions
- What HP can the GTW3884JB support?
- The GTW3884JB offers 900 HP potential flow.
- Is this a ball bearing or journal bearing turbo?
- The GTW3884JB is a journal bearing turbocharger.
- What is the A/R ratio on this turbine housing?
- This unit features a .95 A/R T4 divided turbine housing.
- What does GTW6265JB refer to?
- GTW6265JB is an alternate name for the Garrett GTW3884JB.
For builders who want Garrett-backed reliability with real 900 HP potential and a T4 divided housing setup, the GTW3884JB delivers proven performance at a smart price point.
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