L5P / L5D Stealth Mach 1 64 Turbo W/ Actuator (2017- 2019)

L5P / L5D Stealth Mach 1 64 Turbo W/ Actuator (2017- 2019)

L5P / L5D Stealth STR Turbo (2020-2023)

L5P / L5D Stealth STR Turbo (2020-2023)

L5P / L5D Stealth STR Turbo (2017-2019)

Order your upgraded turbo today! The L5P / L5D Stealth STR is the best replacement turbo for your stock 2017, 2018, and 2019 6.6L Duramax. While capable of providing enough airflow to support up to 650 RWHP, this stock-appearing unit still lights quickly and is great for daily driving, towing, and putting Powerstrokes in their place.

If you have been looking at other "64mm", "Stage 1",  or stock turbo replacements this is a game changer. This turbocharger does not need custom tuning or other upgrades to get superior performance. Box programmers and inline modules work seamlessly with the STR. 

Don't be fooled by the imitators! We've been building custom turbos and providing custom tuning for more than 15 years. We were the first custom tuners to work on the L5P and L5D Duramax platform and know exactly what these trucks need to go to the next level. 

Do you have a 2020 - 2023 L5P or L5D Duramax? Check out our L5P Stealth STR (2020-2023) HERE!

As low as $1,825.00

In stock

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L5P / L5D Stealth STR Turbo (2017-2019)
L5P / L5D Stealth STR Turbo (2017-2019)

In stock


    • Airflow to support 650HP
    • Custom Billet Compressor Wheel
      • 64mm, 11-Blade wheel
        • Wide efficiency range
        • Allows you to tow without the risk of surge
      • Lightweight and high strength
      • Provides 70 lbs/min mass airflow compared to 60lbs/min stock
      • No Surge (Even when lugging)
    • Brand New Parts 
      • No Core Charges
      • Built from OEM quality parts 
    • Designed and spec'd by Tuners
      • Easy to tune (no tuning required)
      • Works with box tuners

    This Turbo is Designed for you if ...

    • You are using a box tuner or no tuning at all
    • Daily drive your truck
    • Have Reliability and Performance as top priorities
    • Tow with your truck
    • Want More Power and excellent street manners!



    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.  

    Do you need a new actuator? Check out our L5P/L5D Stealth STR with an actuator HERE!


    Add on a Stealth Boost Tester.

    Boost leaks can kill diesel engines. They cause higher EGTs, decrease your power, and lower fuel economy. Properly being able to test your entire charged air system is essential to getting peak performance and longevity out of your diesel engine. Charged air systems include everywhere from the turbocharger to the intake manifold. Your intercooler system, Exhaust Gas Recirculation components, and even the Turbocharger compressor cover can all develop boost leaks. This boost tester is exactly what you need if you work on diesel trucks regularly or just want to check the condition of your engine's charge system. Here's what you can get:

    • Heavy Duty Regulator
      • Extremely Accurate
      • Testes Entire Charge system
      • Precise control over test conditions
      • Easy to use and read
      • Premium parts built to last for a lifetime
      • High-quality seals
      • Liquid gauge prevents erratic readings
      • Metal construction
    • CNC Precision-Cut Adapter
      • Perfect Fitment
      • Clean look
      • Intelligent design
      • Made from high-quality materials 
      • Made and assembled in the USA


    Warranty: All Stealth Series turbos offer our Unlimited Mile, 1-year manufacturer warranty for quality and craftsmanship. For warranty inquiries please contact sales@duramaxtuner.com

    The L5P / L5D Stealth STR Turbo by Duramaxtuner.com is specifically designed for the 2017, 2018, and 2019 Chevy Silverado and GMC Sierra 2500, 3500, 4500, 5500, and 6500 models.  It replaces OEM Part #s 12709701044, 11547786, 12683985, 12689094

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