2017-2023 L5P Duramax Stealth STR Drop In VGT Turbo

There's nothing better than upgrading your parts instead of just replacing them. That's why the Stealth STR is the perfect upgrade for your 2017, 2018, or 2019 Chevy Silverado/ GMC Sierra 2500/3500 L5P Duramax. It combines the affordability of a stock turbo replacement with some of the best upgrades you can get in a drop-in L5P charger. Whether you’re looking for more power or simply a do-it-all kind of turbo with some added durability the STR delivers.

63mm Air Grabber Compressor Wheel

• Air flow to support 625rwhp (dynojet) with emissions in-tact
• 7-blade design provides higher airflow than stock
• 63mm sizing for peak weight to efficiency optimization
• Lighter wheel design provides unmatched spool-up
• Recessed "Super Back" design provides added weight reduction
• Featuring the latest advancements in compressor wheel design
• Air Grabber technology for even more additional airflow
• Made out of aerospace-grade billet aluminum
• Peak boost of 40+psi

65mm High Flow Inconel Turbine Wheel

• 65mm exducer compared to 62.5mm Stock
• Noticeable turbo whistle
• 9-blade design provides higher flow and lower EGTs under load
• Excellent boost to drive pressure ratio
• Better durability than stock

 Rotating Assembly (Compressor and Turbine Wheels)

• 6% lighter than the stock rotating assembly
• Provides lightning fast spool-up
• Boosts turbo efficiency and lowers drive pressures
• Precision balanced in-house

 Ported Exhaust Housing

• Larger exhaust port opening to match larger turbine
• Better exhaust gas flow post-turbine
• Less back pressure

Stealth Turbo Benefits

• Absolutely no core charges
• Brand new parts and accessories
• Brand new actuators available
• 1-year warranty on all of our turbos
• Extended warranties available
• Live on-site customer support team here to help

This turbo is a great fit if you...

• Have reliability and performance as your top priorities
• Want immediate response and great daily drivability
• Have a Box Tuner or Custom Tuning installed on your truck
• Want to make 625+rwhp or less
• Tow with your truck often
• Have a completely stock truck (this turbo does not require tuning)
• Need a new replacement turbo for your L5P

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.

Replaces the following GM Part #s: 12709701044, 11547786, 12683985, 12689094

Want more power? Check out the Stealth 64 and Stealth 67!

IMPORTANT NOTICE:
This turbo must only be operated with tuning that uses stock Minimum and Maximum Vane Position tables. Failure to do so can lead to excessive exhaust pressure and boost which may shorten the life of the turbo or engine and may void the turbo warranty.

Damage caused as a result of non-stock vane position tuning modifications will be the responsibility of the owner, not Calibrated Power Solutions Inc.