L5P / L5D Stealth Mach 1 64 Turbo (2017- 2023)

Northern Tuning is proud to announce we are now an official Calibrated Power Dealer!
You can now purchase Stealth STR, 64, and 67 turbochargers — along with full custom tuning for these chargers — directly from us. Trusted performance, proven results.

Order your upgraded turbo today! The L5P / L5D Stealth 64 is the most versatile drop-in turbo ever bolted to the 2017, 2018, and 2019 6.6L Duramax. While capable of providing enough airflow to support up to 700 RWHP this stock-appearing unit still lights quick and is great for daily driving, towing, and putting Powerstrokes in their place.

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.  

• Airflow to support 700HP
• Up to 650 RWHP with stock emissions equipment and basic supporting mods
• Tested in competition setups with extensive supporting mods to make 700+ RWHP
• 41 psi boost @ Sea Level