2024-2025 Duramax L5P Stealth STR Turbocharger (CPS200157)

Fits

The Stealth STR 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. Designed to improve turbo performance and reliability while staying close to the cost of a stock turbo replacement, this turbo is a strong option for stock or lightly modified trucks.

Built with easy tuneability in mind, the Stealth STR requires no custom tuning to get up and running. With a custom billet compressor wheel, custom 9-blade turbine wheel, and lighter rotating assembly, it delivers improved airflow, better EGT control, fast spool-up, and strong street or towing performance.

Part Number: CPS200157

Supersedes: DM1QQ1070103000

• Extra airflow to make 80-100 RWHP over tune-only L5P setups
• Works with box tuners, custom tuning, or without tuning
• Major EGT control improvements compared to stock
• Built to last with more durable components than stock
• Lighter rotating assembly than stock
• Lightning-fast spool-up and immediate throttle response
• Loud turbo whistle from the 9-blade turbine
• Retains factory exhaust brake function
• Designed to prevent compressor surge, even while towing

• No core charge
• Supporting modifications are required to reach peak power levels
• 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

Custom Billet Compressor Wheel

• 63mm 7x7-blade extended tip billet compressor wheel
• Stronger and lighter than stock
• Provides a wide efficiency range
• Lightweight, high-strength billet construction
• Provides 66 lbs/min mass airflow compared to 60 lbs/min stock
• Supports up to 625HP with proper supporting modifications

Custom 9-Blade Turbine Wheel

• Larger than stock for improved exhaust flow
• More aggressive blade angle helps capture exhaust energy
• Sized to maximize throttle response
• 50% thicker turbine blades provide added heat tolerance
• Lowers drive pressure under high-load conditions
• Lowers EGTs under high-load conditions
• Boosts the effectiveness of the compressor wheel upgrade
• Produces a distinctive Stealth turbo whistle

Rotating Assembly

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

• One Year Limited

• 12709701044
• 11547786
• 12683985
• 12689094