2016-2022 2.8L Duramax LWN Stealth STR Turbocharger (CPS200121)

Note: Includes ZR2 Models

The Stealth STR Turbo is an upgraded direct replacement for your 2016-2022 LWN 2.8L Duramax Colorado or Canyon. This turbocharger features a larger and stronger billet compressor wheel, a custom oversized turbine wheel, and Calibrated Power's exclusive HFV High Flow Vane technology for increased airflow, improved power potential, and excellent drivability.

Designed to fit like a stock OEM turbocharger, the Stealth STR Turbo is a reliable upgrade for failed factory turbos or tuned trucks needing more performance. The oversized Stealth nozzle ring and turbine wheel help the truck get on top of the turbo quickly, while the custom billet compressor wheel supplies 20% more airflow than stock.

Part Number: CPS200121

Supersedes DT1170000020000

• 20% more airflow than OEM
• Can make up to 56% more horsepower than stock
• Custom 10-blade billet compressor wheel
• Thicker compressor wheel blades help eliminate the OEM blade folding issue
• Custom oversized turbine wheel
• HFV High Flow Vane technology
• Custom vane/nozzle ring assembly
• Taller vanes match the larger turbine to provide superior high-load efficiency
• Quick-response journal bearing center section

Power Potential

• 180HP baseline LWN power level
• 230HP with tuning only
• Airflow to support 20% more power than custom tuning alone

Factory Actuator

• Utilizes your factory actuator
• Actuator is easy to access and can be swapped onto the new STR Turbo with basic tools
• Designed as a drop-in replacement with upgraded components to help prevent common stock turbo failures

MAP Sensor Notes

• The factory MAP sensor reads up to 29 psi gauge or 45 psi ambient
• Custom EFI Live tuning can command about 28 psi in the Sport Tune, depending on altitude and temperature
• An upgraded MAP sensor is recommended when targeting peak power and improved driveability
• A modified MAP sensor is recommended for daily-driven trucks targeting up to 280HP

• One Year Limited

Replaces GM Part Numbers

• 55506040
• 55486936
• 5506309
• 5510314
• 55486935
• 55598230
• 12641882

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