2011 – 2016 6.6L Chevrolet / GMC 2500HD, 3500HD
Description
Powermax Turbo Upgrade for Chevrolet / GMC Duramax LML Engine
6.6L Duramax LML
Part Number: 886976-5004S (600HP*)
Application: 6.6L Chevrolet / GMC 2500HD, 3500HD (2011 – 2016)
Garrett PowerMax™ turbocharger upgrade for the Chevrolet and GMC 6.6L LML engine platform is engineered to increase engine performance while maintaining OEM installation specifications. This direct drop-in stage 1 upgrade provides 19% more flow than OEM and will support up to 600WHP*. Improvements in efficiency and flow can be attributed to the lightweight forged fully-machined compressor wheel. Boost response of this PowerMax turbocharger compared to OEM has not been tested. This turbocharger is outline interchangeable with the OE hardware to ensure a perfect fit every time.
* Estimated Horsepower. Performance results of this product are highly dependent upon your vehicle’s modifications and tuning/ calibration. The horsepower numbers represented above are calculated based strictly on choke flow of the compressor map (total turbo capability), which represents the potential flywheel horsepower.
**Legal in California only for racing vehicles which may never be used, or registered or licensed for use, upon a highway. Installation may affect vehicle emissions, safety, warranty, and operating license. For details, contact your vehicle’s manufacturer or turbo kit distributor

Outline Interchangeable
This turbocharger is outline interchangeable with the OE hardware to ensure a perfect fit every time.

Performance Upgrade For 6.6L LML Engines
This direct drop-in stage 1 upgrade provides 19% more flow than OEM and will support up to 600WHP*. Improvements in efficiency and flow can be attributed to the lightweight forged fully-machined compressor wheel.

2011 – 2016 6.6L Chevrolet / GMC 2500HD, 3500HD
Compressor Map & Exhaust Flow Chart
Compressor Map

2011 – 2016 6.6L Chevrolet / GMC 2500HD, 3500HD
Performance Comparison Sheet
Powermax Turbo Upgrade for Chevrolet / GMC Duramax LML Engine
6.6L Duramax LML
Part Number: 886976-5004S (600HP*)
Application: 6.6L Chevrolet / GMC 2500HD, 3500HD (2011 – 2016)
Garrett PowerMax™ turbocharger upgrade for the Chevrolet and GMC 6.6L LML engine platform is engineered to increase engine performance while maintaining OEM installation specifications. This direct drop-in stage 1 upgrade provides 19% more flow than OEM and will support up to 600WHP*. Improvements in efficiency and flow can be attributed to the lightweight forged fully-machined compressor wheel. Boost response of this PowerMax turbocharger compared to OEM has not been tested. This turbocharger is outline interchangeable with the OE hardware to ensure a perfect fit every time.
* Estimated Horsepower. Performance results of this product are highly dependent upon your vehicle’s modifications and tuning/ calibration. The horsepower numbers represented above are calculated based strictly on choke flow of the compressor map (total turbo capability), which represents the potential flywheel horsepower.
**Legal in California only for racing vehicles which may never be used, or registered or licensed for use, upon a highway. Installation may affect vehicle emissions, safety, warranty, and operating license. For details, contact your vehicle’s manufacturer or turbo kit distributor for additional information and pricing.
Compressor | Turbine | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
6.6L Duramax Upgrade | Turbo PN | HP* | Inducer | Exducer | Trim | A/R | Inducer | Exducer | Trim | A/R |
6.6L Duramax LML (2011 – 2016) | 886976-5004S | 600 | 65mm | 91mm | 55 | 0.58 | 72mm | 62mm | 75 | 0.90 |
2011 – 2016 6.6L Chevrolet / GMC 2500HD, 3500HD
Download Section
Item | Link |
---|---|
Compressor Map | Click to download |
2011 – 2016 Chevrolet / GMC 2500HD, 3500HD / 6.6L Duramax LML Engine Brochure | Click to download |
Product Photo | Click to download |