2001-2004 Duramax LB7 Stealth Mach 1 Turbocharger (CPS200226)

Fits

The Stealth Mach 1 Turbo is an upgraded direct replacement turbocharger for 2001-2004 Chevrolet Silverado and GMC Sierra HD trucks with the 6.6L LB7 Duramax diesel engine. This stock-appearing, drop-in IHI-style turbo is capable of supporting up to 640 RWHP while improving power, towing performance, and overall drivability.

Built with a custom-designed high-flow turbine assembly, 7075 billet compressor wheel, liquid-cooled construction, and 360-degree thrust bearing, the Stealth Mach 1 delivers improved efficiency under heavy load. The larger turbine assembly helps lower drive pressure, improve boost-to-drive pressure balance, and reduce EGTs when the truck is working hard.

Part Number: CPS200226

Supersedes: DM1351070203000

• 640+ RWHP peak power potential
• 64mm 11-blade billet compressor wheel
• Quick spool-up
• High-flow turbine wheel is larger than stock and matched to the custom compressor wheel
• Custom-cut compressor cover and exhaust housing
• 360-degree thrust bearing
• High-flow ported turbine housing helps lower EGTs
• Wide torque curve
• Direct bolt-on installation
• Great for daily driving and towing

• Does not fit California emissions-equipped trucks

Billet Compressor Wheel

• 64mm 11-blade 7075 billet compressor wheel
• Designed to provide increased airflow while retaining stock-appearing fitment
• Matched to the custom high-flow turbine assembly for improved balance and performance

High-Flow Turbine Assembly

• Larger turbine assembly helps lower drive pressure under heavy load
• Improves boost-to-drive pressure balance compared to the stock turbocharger
• Supports increased efficiency, improved power, and lower EGTs

Ported Turbine Housing

• High-flow ported turbine housing improves exhaust flow
• Helps reduce EGTs during towing and high-load use
• Maintains a true drop-in, bolt-on turbocharger design

Durability Upgrades

• Liquid-cooled design
• 360-degree thrust bearing
• Built for daily driving, towing, and higher-performance LB7 applications

• One Year Limited

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