2024-2025 Duramax L5P Stealth Mach 1 Turbocharger (CPS200289)

Description

Fits

Year	Make	Model	Engine
2024-2025	Chevrolet/GMC	Silverado/Sierra 2500HD/3500HD/4500HD/5500HD/6500HD	6.6L L5P/L5D Duramax

The Stealth Mach 1 Turbo is an upgraded direct replacement turbocharger for 2024-2025 Chevrolet Silverado and GMC Sierra HD trucks with the 6.6L L5P/L5D Duramax diesel engine. Capable of supplying airflow to support up to 700HP, this turbo is designed for strong drop-in performance, improved EGT control, and easy tuneability.

With a custom billet compressor wheel, custom 9-blade turbine wheel, custom vane cage, and lighter rotating assembly, the Stealth Mach 1 delivers snappy spool-up comparable to the factory turbo while providing increased airflow and better high-load performance.

Part Number: CPS200289

Supersedes: DM1QQ1070200000

Features

• Airflow capable of supporting up to 700HP
• Up to 625 RWHP with stock emissions equipment and basic supporting modifications
• Tested in competition setups with extensive supporting modifications to make 750+ RWHP
• Custom billet compressor wheel
• Turbine wheel and nozzle ring upgrades
• Improved EGT control
• Compressor and turbine wheel durability upgrades
• Designed to prevent surge, even while towing
• Retains factory exhaust brake function
• Easy to tune

Notes

• No core charge
• This turbo must only be operated with tuning that uses stock minimum and maximum vane position tables
• Non-stock vane position tuning can cause excessive exhaust pressure and boost, which may shorten turbo or engine life and may void the turbo warranty
• Higher power levels require proper supporting modifications

Additional Info

Billet Compressor Wheel

• 64mm 11-blade extended tip billet compressor wheel
• Provides a wide efficiency range
• Less surge-prone than other compressor wheel designs
• Lightweight and high-strength construction
• Provides 72 lbs/min mass airflow compared to 60 lbs/min stock

Turbine Wheel

• Custom 9-blade turbine wheel is larger than stock
• More aggressive blade angle improves exhaust energy capture
• Sized to maximize throttle response with 700HP capability
• 50% thicker turbine blades provide added heat tolerance
• Lowers drive pressure and EGTs under high-load conditions
• Produces a distinctive Stealth turbo whistle

Custom Vane Cage

• Allows fitment of the larger custom turbine wheel
• Supports improved exhaust flow and high-load efficiency
• Helps improve EGT control compared to the factory setup

Rotating Assembly

• Lighter than the stock rotating assembly
• Provides snappy spool-up comparable to the factory turbo
• Precision balanced in-house

Warranty

• One Year Limited

OE Replacement Part Numbers

• 12709701044
• 11547786
• 12683985
• 12689094