Upgrade your turbo today! The L5P / L5D Stealth 67G2 is the best drop-in turbo ever bolted to the 2017, 2018 or 2019 6.6L L5P Duramax. While capable of providing enough airflow to support up to 800 RWHP this stock-appearing unit still lights quickly and is great for daily driving, towing, and maximum performance.

This turbocharger features HFV technology! HFV or High Flow Vane technology is our proprietary customization of the variable vane cage and nozzle ring assembly. This advancement allows the use of a larger turbine wheel for maximum high-load efficiency. Stealth turbos featuring our HFV upgrade are capable of producing more power, spooling up quicker, and managing EGTs better than those limited with factory nozzle rings.

Your truck is going to experience increased performance across a wide operating range due to our HFV assembly, oversized turbine wheel, and billet compressor wheel. Built from brand new parts, this turbocharger won’t require a core charge. The optional actuator is pre-calibrated and the entire turbo comes ready for installation. Custom tuning is required to run this turbocharger on your truck and specific min/max vane positions are required (check bottom of this page). Deletes are not required. We have made up to 650 RWHP when matching this turbo with our Custom Emissions Equipped Tuning.  

L5P / L5D Stealth 67G2: Featuring HFV (High Flow Vane) Technology

• Airflow to support 800HP
  
  • Up to 650 RWHP with stock emissions equipment and basic supporting mods
  • Tested in competition setups with extensive supporting mods to make 800+ RWHP
    
    
• HFV (High Flow Vane) Technology
  • Custom Vane/Nozzle Ring Assembly
  • Exclusive design produced in-house specific to this application
  • Taller and wider vanes match larger turbine to provide superior high-load efficiency
  • Retain factory exhaust brake and quicker throttle response
    
    
• Custom Billet Compressor Wheel
  
  • 67mm 11-Blade custom wheel
  • Provides a wide efficiency range
  • Lightweight and high strength
  • Provides 81 lbs/min mass airflow compared to 60lbs/min stock
    
    
• Beast Wheel: The Ultimate Turbine Wheel
  • Custom high flow 9-blade design
  • Lowers drive pressures under high loads
  • Boosts the effectiveness of exhaust energy capture
  • Improved efficiency provides lower EGTs at peak power
  • Produces a distinctive Stealth turbo whistle
  • Larger than stock
    • Sized to maximize throttle response for 700hp capability (quick spool up)
    • Optimized to work with our Custom Billet Compressor Wheel
    • Designed with larger inducers in order to utilize HFV technology
    • Lowers drive pressures at high load
      
• Brand New parts and electronics
  • No Core Charges

This Turbo is Designed for you if ...

• Already have, or also installing custom tuning
• Daily drive your truck
• Have Reliability and Performance as top priorities
• Tow with your truck
• Want More Power when you need it, but still have excellent street manners!

 THIS TURBO DOES NOT COME WITH A NEW ACTUATOR

Do you need an Actuator?

 If you're wondering whether or not you should buy an actuator to compliment your Stealth turbo, allow us to share our thoughts.  The 2017-2023 6.6L Duramax turbo actuator has a very low failure rate in the field.  The fact that it's well-cooled and not in close proximity to the hot parts of the turbo means that it's out of harm's way.  Unless you're experiencing codes that indicate actuator issues or know for a fact that your actuator is somehow damaged, we would suggest saving your money and retaining your factory actuator.