Product Overview
Fleece Performance Cheetah® VNT Turbocharger for 2011–2016 GM 6.6L LML Duramax
The Fleece Performance Cheetah® Turbocharger is engineered as a direct, drop-in replacement for the factory turbocharger on compatible 2011–2016 GM Silverado and Sierra 2500/3500 trucks equipped with the 6.6L LML Duramax diesel engine.
Built with a Fleece Performance-engineered 63mm Forged Milled Wheel (FMW) compressor wheel and a high-flow Cheetah turbine wheel, this turbocharger is designed to deliver the spool-up and throttle response of a smaller turbo while still providing strong top-end power. With a rated capability of 650 RWHP, it is designed for dual-purpose applications — from weekday towing to weekend performance use.
Key Features
- 100% Stock Appearing: Uses stock-format housings with updated internal components.
- 50-State Compliant: CARB Executive Order D-834-3.
- 63mm Forged Milled Wheel: Fleece Performance exclusive FMW compressor wheel technology.
- Upgraded Bearings: Features upgraded shaft bearings and 360-degree thrust bearings.
- Variable Nozzle Technology (VNT): Allows the turbo to act smaller on spool-up, then open up to flow more exhaust at the top end — delivering stock-like spool with increased top-end power.
- Faster Spool-Up & Broader Torque Curve: Improved throttle response across the RPM range.
- No Core Charge: Sold outright with no core to return.
Product Video
What’s Included
This turbocharger kit includes:
- New vane position sensor
- New vane solenoid
- Up-pipe gaskets
- Oil drain gasket
- Lower drain tube gasket
Application Notes & OEM Interchange
OEM Interchange Numbers:
- 12635167
- 12637721
- 12642129
- 12642314
- 12677684
- 19434580
- 800799-0001
- 800799-0002
- 800799-0003
- 848212-5002S
- 848212-9002S
- GT3788VA
Product Specifications
- Product Type: Direct-Fit VNT Turbocharger
- Application: 2011–2016 GM Silverado/Sierra 2500 & 3500
- Engine: 6.6L LML Duramax Diesel
- Compressor Wheel: Fleece Performance Exclusive 63mm FMW (Forged Milled Wheel)
- Turbine Technology: High-Flow Cheetah Variable Nozzle Turbine (VNT)
- Bearings: Upgraded Shaft Bearings and 360° Thrust Bearings
- Rated Capability: Up to 650 RWHP
- Core Charge: None
- UPC: 670875714861
- Shipping Weight: 50 lbs
Certifications
CARB Executive Order: D-834-3 (50-State Legal)
SEMA Certification: SC-FLC01-0003
Warranty
Installation Resources
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — P65Warnings.ca.gov
Disclaimer
Verify fitment before ordering. This turbocharger is intended for compatible 2011–2016 GM 6.6L LML Duramax applications and is 50-state legal under CARB Executive Order D-834-3. Warranty terms and installation requirements may vary by vehicle and location.
Vehicle Fitment
| Year | Make | Model | Engine |
|---|---|---|---|
| 2011 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LML Duramax |
| 2012 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LML Duramax |
| 2013 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LML Duramax |
| 2014 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LML Duramax |
| 2015 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LML Duramax |
| 2016 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LML Duramax |
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