Garrett GTW3476JB (aka GTW5857JB) – 58mm JB Turbo, .82 A/R T4 UNDIVIDED WITH 3″ GT V-BAND

The Garrett GTW3476JB brings genuine GTW-series performance to builders chasing serious power without stepping up to a larger frame turbo. Designed as Garrett’s refined take on the popular 5858 size turbo, this journal bearing unit is built for enthusiasts who want strong flow potential, a T4 undivided housing, and a V-band exit in one purpose-built package. It’s the right call for anyone who wants proven Garrett engineering at a price point that doesn’t punish the build budget.

Specifications

• Compressor Wheel Inducer: 58.3mm
• Compressor Wheel Exducer: 76.4mm
• Compressor Wheel Trim: 58
• Turbine Wheel Inducer: 65.0mm
• Turbine Wheel Exducer: 56.6mm
• Turbine Wheel Trim: 76
• Turbine Housing A/R: .82
• Turbine Housing Configuration: T4 Undivided
• Turbine Outlet: 3″ GT V-band
• V-band Flange OD: 90mm
• V-band Centering: 81mm
• Bearing Type: Journal Bearing
• HP Potential: 700HP potential flow
• Garrett P/N: GTW3476JB
• Also Known As: GTW5857JB

Performance & Application

The GTW3476JB is Garrett’s performance solution to the popular 5858 size turbo, delivering the flow capability enthusiasts expect from that class in a refined GTW package. With a .82 A/R T4 undivided turbine housing and a 3″ GT V-band exit, this turbo is suited to builds targeting up to 700HP potential flow. The journal bearing design and trim 58 compressor paired with a trim 76 turbine wheel make this a strong choice for high-output street and performance applications seeking great performance at a competitive price.

Frequently Asked Questions

What HP can the GTW3476JB support?

The GTW3476JB offers 700HP potential flow.

Is the GTW3476JB a ball bearing or journal bearing turbo?

The GTW3476JB is a journal bearing turbo.

What is the A/R ratio and turbine housing configuration?

The GTW3476JB uses a .82 A/R T4 undivided turbine housing.

What does GTW5857JB refer to?

GTW5857JB is an alias for the same Garrett GTW3476JB turbocharger.

For builders who want the flow of a popular 5858-class turbo backed by genuine Garrett engineering, the GTW3476JB delivers proven performance without compromise.