Order your upgraded turbo today! The L5P Stealth STR is the best replacement turbo for your stock 2020, and 20216.6L L5P Duramax. While capable of providing enough airflow to support up to 650RWHP, this stock-appearing unit still lights quick 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 L5P Stealth 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 Duramax platform and know exactly what these trucks need to go to the next level.
Airflow to support650HP
Up to600RWHP with stock emissions equipment and basic supporting mods
Want more power? Check out theL5P Stealth 64orL5P Stealth 67G2
41 psi boost @ Sea Level
Custom Billet Compressor Wheel
64mm,11-Blade wheel
Wide efficiency range
Allows you to tow without the risk of surge
Lightweight and high strength
Provides70lbs/minmass airflow compared to 60lbs/min stock
No Surge (Even when lugging)
Brand New parts and electronics
No Core Charges
Built from OEM qualityparts
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 astop priorities
Tow with your truck
Want More Power andexcellent 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 L5P 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 have a 2017, 2018, or 2019 L5P Duramax? Check out our L5P Stealth STR (2017-2019) 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 partsbuilt to last for a lifetime
High-quality seals
Liquid gaugeprevents erratic readings
Metal construction
CNC Precision-Cut Adapter
Perfect Fitment
Clean look
Intelligent design
Madefrom 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 contactsales@duramaxtuner.com
The Stealth L5P STR Turbo by Duramaxtuner.com is specifically designed for the 2020, and 2021Chevy Silverado and GMC Sierra 2500 and 3500 models. It replaces OEM Part #s 12709701044, 11547786, 12683985, 12689094
