Stealth MACH-Hybrid Turbo - 2011-2016 GM LML 6.6L Duramax - CPS200418

Calibrated Power Stealth MACH-Hybrid Turbo – 2011–2016 GM 6.6L LML Duramax

Part Number: CPS200418

Upgrade the performance, airflow, and durability of your 2011–2016 Chevrolet Silverado or GMC Sierra 6.6L LML Duramax with the Calibrated Power Stealth MACH-Hybrid Turbo. Designed for high-performance street trucks, heavy towing, and compound-turbo applications, this direct bolt-on VGT turbo combines responsive spool-up with increased exhaust flow, improved EGT control, and strong top-end power.

The Stealth MACH-Hybrid features a 63mm 11-blade extended-tip billet compressor wheel precision-machined from high-strength 2618 aluminum alloy. Calibrated Power’s Air Grabber Technology helps maximize compressor airflow and efficiency across a broad operating range, providing responsive street manners with the airflow required for higher-horsepower LML Duramax builds.

On the exhaust side, the MACH-Hybrid uses an oversized 70.2mm 10-blade turbine wheel constructed from heat-resistant 713C nickel alloy. Approximately 10% larger than the factory turbine, this upgraded design increases exhaust flow, reduces drive pressure, and helps control exhaust gas temperatures during towing, hard acceleration, and sustained high-load operation.

Upgraded 15mm billet stainless-steel High Flow Vanes are taller and wider than the factory-style vanes, reducing restriction through the turbine nozzle. This improved VGT vane system helps the larger turbine operate efficiently while maintaining responsive spool-up and superior boost-to-drive-pressure control. The 10-blade turbine also produces a pronounced Stealth turbo whistle.

The up-pipe inlets and downpipe outlet are machine-ported to improve exhaust flow into and out of the turbocharger. Heavy-duty journal bearings and a 360-degree thrust bearing provide increased strength and durability for high-boost and high-load applications.

The Stealth MACH-Hybrid is dyno-proven to support as much as 650 rear-wheel horsepower as a single turbo and approximately 600 RWHP with factory emissions equipment and proper tuning. When used as the high-pressure turbo in a properly designed compound system, it can support builds producing as much as 1,100 rear-wheel horsepower.

Manufactured from brand-new components, the MACH-Hybrid installs in the factory turbo location, maintains a stock-style appearance, and does not require a core return.

Features and Benefits

• Fits 2011–2016 GM 6.6L LML Duramax diesel engines
• Direct bolt-on VGT turbocharger upgrade
• Dyno-proven to support up to 650 RWHP as a single turbo
• Supports approximately 600 RWHP with factory emissions equipment and proper tuning
• Capable of supporting up to 1,100 RWHP in a properly configured compound-turbo application
• Optimized for single-turbo and compound-turbo systems
• 63mm 11-blade extended-tip billet compressor wheel
• Compressor wheel manufactured from 2618 aluminum alloy
• Air Grabber compressor-wheel technology
• 70.2mm 10-blade 713C nickel-alloy turbine wheel
• Turbine wheel approximately 10% larger than stock
• Upgraded 15mm High Flow VGT Vanes
• VGT vanes machined from billet 310 stainless steel
• Improved exhaust flow through the turbine nozzle
• Superior boost-to-drive-pressure ratio
• Reduced exhaust restriction and drive pressure
• Better EGT management under heavy load
• Designed to limit compressor surge
• Strong top-end performance
• Machine-ported up-pipe inlets
• Machine-ported downpipe outlet
• Heavy-duty journal bearings
• 360-degree thrust bearing for increased durability
• Loud turbo whistle from the 10-blade turbine
• Direct factory-location installation
• Stock-style exterior appearance
• Manufactured from brand-new components
• No core charge or core return required
• One-year manufacturer warranty

Vehicle Fitment

• 2011–2016 Chevrolet Silverado 2500HD 6.6L LML Duramax
• 2011–2016 Chevrolet Silverado 3500HD 6.6L LML Duramax
• 2011–2016 GMC Sierra 2500HD 6.6L LML Duramax
• 2011–2016 GMC Sierra 3500HD 6.6L LML Duramax

Who Is This Turbo Best For?

The Calibrated Power Stealth MACH-Hybrid is an excellent choice for LML Duramax owners who:

• Want a responsive, high-flow factory-location VGT turbo
• Need improved EGT control for towing or heavy-load operation
• Want stronger top-end performance without excessive turbo lag
• Are building a truck in the 600–650 RWHP range
• Plan to install a compound-turbo system
• Need an efficient high-pressure turbo for a high-horsepower compound build
• Want improved boost-to-drive-pressure performance
• Prefer a stock-style appearance and direct bolt-on installation
• Want an aggressive and pronounced turbo whistle
• Do not want to pay a core charge or return an old turbo

Important Notes

Proper tuning is recommended to maximize the performance and drivability of this turbocharger. Upgraded fuel-system components and other supporting modifications may be required to reach advertised horsepower levels. Compound applications require a properly designed secondary turbo system, fuel system, engine combination, and custom tuning.

Actual horsepower and boost will vary depending on tuning, fuel delivery, supporting modifications, vehicle condition, elevation, and dyno type. Professional installation is strongly recommended.

This product cannot be shipped to or installed in California.

Replaces the following OEM Part Numbers: 848212-5002S, 12642314, 12642129, 800799-0002, 800799-0003, GT3788VA, Garret 3788

Supersedes model DM1DH1070802000