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Garrett Powermax GT3788V Stage 1 Turbocharger Part # 886976-5004S | 2011–2016 LML Duramax
Unlock more power from your 2011–2016 LML Duramax with the Garrett PowerMax GT3788V Stage 1 Turbocharger (886976-5004S). This premium direct-replacement upgrade is engineered to bolt in using factory mounting points, lines, and electronics—no major modifications required.
Garrett designed this Stage 1 PowerMax with a larger 65mm inducer forged, fully-machined compressor wheel that flows 19% more air than the factory turbo. The result is stronger mid-range response, better overall efficiency, and the ability to support up to 600 wheel horsepower when paired with proper supporting modifications and custom tuning.
Key engineering advantages include:
- Patented compressor and turbine aero that helps keep drive pressures and EGTs in check even under load
- Ball-bearing CHRA for quicker spool-up, improved durability, and the ability to handle higher boost levels compared to the stock journal-bearing design
- Outline-interchangeable with OE hardware for a perfect fit every time
- Retains full factory VGT functionality for excellent drivability whether you’re daily driving, towing, or building for performance
Whether you’re looking for stronger towing capability, quicker throttle response, or a solid foundation for a tuned truck, the Garrett Powermax GT3788V Stage 1 is one of the most popular and trusted drop-in turbo upgrades for the LML platform.
Key Features & Benefits
- 19% more airflow than stock OEM turbo
- Supports up to 600 RWHP (with supporting mods & tuning)
- 65mm inducer forged & fully machined compressor wheel
- Ball bearing cartridge for faster response and long-term durability
- Lower drive pressures and improved EGT control under load
- Direct drop-in — uses factory mounts, oil/coolant lines, and electronics
- Excellent for daily driving or towing with moderate to aggressive tuning
*Estimated horsepower. Actual results depend on supporting modifications, fuel system, exhaust, and tuning/calibration.
Garrett Powermax GT3788V Stage 1 Turbocharger Part # 886976-5004S | 2011–2016 LML Duramax
Unlock more power from your 2011–2016 LML Duramax with the Garrett PowerMax GT3788V Stage 1 Turbocharger (886976-5004S). This premium direct-replacement upgrade is engineered to bolt in using factory mounting points, lines, and electronics—no major modifications required.
Garrett designed this Stage 1 PowerMax with a larger 65mm inducer forged, fully-machined compressor wheel that flows 19% more air than the factory turbo. The result is stronger mid-range response, better overall efficiency, and the ability to support up to 600 wheel horsepower when paired with proper supporting modifications and custom tuning.
Key engineering advantages include:
Patented compressor and turbine aero that helps keep drive pressures and EGTs in check even under load
Ball-bearing CHRA for quicker spool-up, improved durability, and the ability to handle higher boost levels compared to the stock journal-bearing design
Outline-interchangeable with OE hardware for a perfect fit every time
Retains full factory VGT functionality for excellent drivability whether you’re d[...]
Garrett Powermax GT3788V Stage 1 Turbocharger Part # 886976-5004S | 2011–2016 LML Duramax
Unlock more power from your 2011–2016 LML Duramax with the Garrett PowerMax GT3788V Stage 1 Turbocharger (886976-5004S). This premium direct-replacement upgrade is engineered to bolt in using factory mounting points, lines, and electronics—no major modifications required.
Garrett designed this Stage 1 PowerMax with a larger 65mm inducer forged, fully-machined compressor wheel that flows 19% more air than the factory turbo. The result is stronger mid-range response, better overall efficiency, and the ability to support up to 600 wheel horsepower when paired with proper supporting modifications and custom tuning.
Key engineering advantages include:
- Patented compressor and turbine aero that helps keep drive pressures and EGTs in check even under load
- Ball-bearing CHRA for quicker spool-up, improved durability, and the ability to handle higher boost levels compared to the stock journal-bearing design
- Outline-interchangeable with OE hardware for a perfect fit every time
- Retains full factory VGT functionality for excellent drivability whether you’re daily driving, towing, or building for performance
Whether you’re looking for stronger towing capability, quicker throttle response, or a solid foundation for a tuned truck, the Garrett Powermax GT3788V Stage 1 is one of the most popular and trusted drop-in turbo upgrades for the LML platform.
Key Features & Benefits
- 19% more airflow than stock OEM turbo
- Supports up to 600 RWHP (with supporting mods & tuning)
- 65mm inducer forged & fully machined compressor wheel
- Ball bearing cartridge for faster response and long-term durability
- Lower drive pressures and improved EGT control under load
- Direct drop-in — uses factory mounts, oil/coolant lines, and electronics
- Excellent for daily driving or towing with moderate to aggressive tuning
*Estimated horsepower. Actual results depend on supporting modifications, fuel system, exhaust, and tuning/calibration.
Fits: LML Duramax 2011-2016 (Pickup)
Fits: LML Duramax 2011-2016 (Pickup)
Fits: LML Duramax 2011-2016 (Pickup)
Fits: LGH Duramax 2011-2016 (Cab & Chassis)