Stealth Mach 1 64mm Drop In VGT Turbo CPS200275 | 2017-2023 Duramax 6.6L L5P

The Stealth 64 VGT Turbocharger is the ultimate drop-in upgrade for drivers seeking exceptional towing capability, outstanding street manners, and serious horsepower. Designed for the 6.6L Duramax L5P/L5D platform, this stock-appearing variable geometry turbocharger delivers quick spool-up, lower exhaust gas temperatures, fully functional exhaust braking, and the airflow needed to support up to 700 rear-wheel horsepower in properly supported applications.

At the heart of the Stealth 64 is Calibrated Power's proprietary High Flow Vane (HFV) Technology. By redesigning the variable vane cage and nozzle ring assembly, HFV allows the use of a larger turbine wheel while improving spool characteristics, reducing drive pressure, and increasing efficiency under heavy loads. Combined with a custom 64mm billet compressor wheel and 70.4mm 9-blade turbine wheel, this turbo provides an ideal balance of towing performance, daily drivability, and competition-ready power.

Unlike many high-performance turbochargers, the Stealth 64 installs as a complete direct replacement with no core charge and retains full exhaust brake functionality. Whether you're towing heavy loads, daily driving, or building a high-performance street truck, this turbo delivers clean, reliable power without sacrificing drivability.

Features:

• Supports 700+ RWHP in fully supported competition applications
• Capable of up to 650 RWHP with stock emissions equipment and basic supporting modifications
• Direct bolt-on, stock-appearing replacement
• No core charge required
• Calibrated Power High Flow Vane (HFV) Technology
• Improved turbo efficiency and lower drive pressures under load
• Helps reduce exhaust gas temperatures during towing and performance driving
• Fully functional factory-style exhaust brake
• Fast spool-up with excellent throttle response
• Excellent balance of towing capability, drivability, and performance
• 12-month warranty

Turbo Specifications:

• 64mm 11-blade extended-tip billet 2618 aluminum compressor wheel
• 70.4mm 9-blade 713C nickel alloy turbine wheel
• High Flow Vane (HFV) nozzle ring and vane assembly
• 74 lb/min airflow capacity (vs. approximately 60 lb/min stock)

Ideal For Owners Who:

• Daily drive their truck
• Tow regularly
• Plan to install or already have custom tuning
• Want significantly more power without sacrificing drivability
• Prioritize reliability along with performance

Actuator Recommendation:

• The factory L5P turbo actuator has an excellent reliability record and typically does not require replacement unless it has failed or is setting actuator-related diagnostic trouble codes.

Notes:

• Custom tuning is strongly recommended to maximize performance.
• Replaces GM part numbers: 12709701044, 11547786, 12683985, and 12689094.