Garrett Turbocharger, T3/T4E, 50Trim Compressor, StageIIITurbine

The Garrett T3/T4E turbocharger with 50 Trim compressor and Stage III turbine wheel is the go-to hybrid for enthusiasts who want proven, factory-balanced performance without unnecessary complexity. Built as an oil-cooled unit with no water lines to route, it’s a favorite among builders looking for a reliable, versatile turbo that fits a wide range of engine platforms. This is the turbo enthusiasts turn to when they want dependable OEM-grade construction paired with real power potential.

Specifications

• Compressor Trim: 50 Trim
• Turbine Wheel: Stage III (76 Trim)
• Bearing Type: Journal Bearing
• Cooling: Oil cooled only, no water lines required
• HP Capacity: Supports power to 450 crank HP
• Default Turbine Housing Inlet: T3 inlet
• Default Turbine Housing Outlet: 4 bolt (T31) outlet
• Optional Turbine Housing A/R: .63 A/R
• Optional Turbine Housing A/R: .82 A/R
• Optional Turbine Housing A/R: .72 A/R (only available on Special T25 EWG-44 housing selection)
• Optional Turbine Housing A/R: 1.06 A/R
• Optional Turbine Housing A/R: .72 A/R (Cosworth selection)
• Optional Turbine Housing A/R: .48 A/R (T3 4-bolt ONLY)
• Assembly: Garrett factory assembled and balanced
• Garrett P/N: 466159-5011S

Performance & Application

This T3/T4E hybrid is widely regarded as one of the most popular T3/T4 configurations, used across a variety of engines for best overall response. The 50 Trim compressor paired with the Stage III turbine wheel delivers a balance of quick spool characteristics and strong top-end power potential, making it well suited to street and performance builds seeking a reliable power upgrade. Its oil-cooled design simplifies installation by eliminating the need for coolant lines, while the factory Garrett assembly and balancing ensures OEM-level reliability under boost.

Frequently Asked Questions

What HP can the T3/T4E 50 Trim/Stage III turbo support?

This turbocharger supports power to 450 crank HP.

Is this a ball bearing or journal bearing turbo?

This is a journal bearing turbocharger.

Does this turbo require water lines?

No, this turbo is oil cooled only and no water lines are required.

What turbine housing configuration comes standard?

The default exhaust housing is a T3 inlet with a 4 bolt (T31) outlet, though many optional turbine housings are available in various A/R’s.

For builders who want a factory-balanced, versatile hybrid turbo with proven reliability up to 450 crank HP, the T3/T4E 50 Trim/Stage III combination remains a top-tier choice.