Garrett GTW3884JB 62mm (aka GTW6265JB) Journal Bearing Tbo .81 A/R T4 UND W/ 3″ VB 81mm cen grv

The Garrett GTW3884JB is a journal bearing turbocharger built for enthusiasts who want serious top-end power without stepping up to a larger frame turbo. As part of Garrett’s GTW Series, it delivers a high-performance alternative to the popular 6466 size turbo at a more competitive price point. This is the right choice for builders chasing big horsepower who need proven Garrett engineering and flow capacity in a well-supported package.

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
• Bearing Type: Journal Bearing
• Turbine Housing A/R: .81 A/R (also available in .96 A/R)
• Turbine Housing Configuration: T4 Undivided with 3″ V-band, 81mm center groove
• Compressor Housing Frame: T04S Frame
• Compressor Inlet: 4″
• Compressor Outlet: 2.5″
• Anti-Surge Design: Built-in & machined anti-surge
• HP Potential: 900 HP flow potential
• Garrett P/N: GTW3884JB
• Also Known As: GTW6265JB

Performance & Application

The GTW3884JB is engineered for enthusiasts targeting up to 900 HP with a turbo that balances strong response against serious top-end capability. The T4 undivided .81 A/R turbine housing with 3″ V-band and center groove design supports efficient exhaust flow while the T04S compressor frame with built-in anti-surge technology maximizes usable compressor map range. This journal bearing configuration makes it a durable, cost-effective option for high-power street and race builds. For applications requiring a different spool characteristic, the .96 A/R turbine housing option is also available.

Frequently Asked Questions

What HP can the GTW3884JB support?

The GTW3884JB has a 900 HP flow potential.

Is this a ball bearing or journal bearing turbo?

The GTW3884JB is a journal bearing turbocharger.

What does GTW6265JB refer to?

GTW6265JB is an alternate name (alias) for the Garrett GTW3884JB.

What A/R ratio options are available for this turbine housing?

This turbo is available with a standard .81 A/R T4 undivided turbine housing, with an optional .96 A/R selection.

For builders who need proven Garrett performance and flow capacity without the size and cost of a larger frame turbo, the GTW3884JB delivers a compelling, competitively priced solution.