Garrett 856801-5005S GTX3071R GenII Turbocharger T3/V-Band 0.82 A/R 340,A

Vehicle Fitment

• Universal performance turbocharger - not specific to any vehicle
• Commonly used in custom turbo systems (1.8 L-3.0 L engine applications)

Features

• Garrett GTX3071R Gen II complete turbocharger assembly
• Gen II compressor aerodynamics for enhanced flow and power range
• High-flow compressor housing with integrated speed sensor port
• T3 inlet flange with V-Band turbine outlet for flexible integration
• Dual ceramic ball bearing cartridge for rapid spool and durability
• Water- and oil-cooled center housing for thermal stability
• Balanced performance from 340-650 HP
• Standard rotation configuration (clockwise rotation)

Specifications

• Brand: Garrett
• Part Number: 856801-5005S
• Turbo Model: GTX3071R Gen II
• Supported Power Range: ~340-650 HP
• Recommended Engine Displacement: ~1.8 L-3.0 L
• Compressor Wheel Inducer: ~54 mm
• Compressor Wheel Exducer: ~71 mm
• Compressor Trim: ~58
• Compressor A/R: ~0.60
• Compressor Inlet Size: ~4.00" hose
• Compressor Outlet Size: ~2.00" hose
• Turbine Wheel Inducer: ~60 mm
• Turbine Wheel Exducer: ~55 mm
• Turbine Trim: ~84
• Turbine Housing A/R: ~0.82
• Turbine Inlet Flange: T3
• Turbine Outlet: V-Band
• Cooling: Water & oil cooled
• Bearing Type: Dual ceramic ball bearings

Included Components

• 1x Garrett GTX3071R Gen II turbocharger assembly
• Integrated internal wastegated turbine housing (free-float, no separate actuator)
• Note: Mounting hardware, oil/coolant lines, gaskets, and hoses not included

Product Description

The Garrett 856801-5005S GTX3071R Gen II Turbocharger is a high-performance turbo assembly engineered for tuners, engine builders, and custom forced-induction systems. Featuring Garrett's second-generation (Gen II) compressor aerodynamics, this turbocharger increases airflow and performance over earlier designs while maintaining excellent surge resistance and efficiency. The high-flow compressor housing includes a port for an aftermarket speed sensor, giving advanced tuners data visibility if needed.

With a **0.82 A/R** turbine housing and a **T3 inlet / V-Band outlet** configuration, the 856801-5005S balances mid-range responsiveness with high-end flow, making it well-suited for engines in the **1.8 L to 3.0 L** range targeting roughly **340 to 650 HP** when set up with appropriate supporting modifications and tuning. Its dual ceramic ball bearing center housing with water and oil cooling provides rapid spool-up and robust durability under sustained boost, while the standard rotation setup ensures compatibility with many custom installations and manifold layouts.