Product Overview
Fleece Performance Cheetah® 63mm FMW VNT Turbocharger for 2004.5–2010 GM 6.6L LLY/LBZ/LMM Duramax
The Fleece Performance Cheetah® Turbocharger is engineered as a direct, drop-in replacement for the factory turbocharger on compatible 2004.5–2010 GM Silverado and Sierra 2500/3500 trucks equipped with the 6.6L LLY, LBZ, or LMM Duramax diesel engine.
Built with a Fleece Performance 63mm FMW compressor wheel and a 66mm high-flow 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 625 RWHP, it is designed for dual-purpose applications — from weekday towing to weekend performance use.
Key Features
- 100% Stock Appearing: Uses stock housings with updated internal components, keeping all factory systems intact while safely supporting 40–45 PSI of boost.
- 63mm FMW Compressor Wheel: Forged milled wheel technology, engineered to be stronger than billet.
- Upgraded Bearings: Built with 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
This turbocharger covers multiple Duramax engine generations across its model year range:
- 2004.5–2005: LLY Duramax
- 2006–2007: LLY/LBZ Duramax (2007 classic body style)
- 2007.5–2010: LMM Duramax (new body style)
OEM Interchange Numbers:
- 12639460
- 97387896
- 98002388
- 98002389
- 98011735
- 98021617
- 98065854
- 848212-5001S
Product Specifications
- Product Type: Direct-Fit VNT Turbocharger
- Application: 2004.5–2010 GM Silverado/Sierra 2500 & 3500
- Engine: 6.6L LLY / LBZ / LMM Duramax Diesel
- Compressor Wheel: Fleece Performance 63mm FMW (Forged Milled Wheel)
- Turbine Wheel: 66mm High-Flow
- Bearings: Upgraded Shaft Bearings and 360° Thrust Bearings
- Rated Capability: Up to 625 RWHP
- Supported Boost: 40–45 PSI
- Core Charge: None
- UPC: 670875715004
- Shipping Weight: 55 lbs
Certifications
CARB Executive Order: D-834-25
SEMA Certification: SC-FLC01-0041
Warranty
Installation Resources
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — P65Warnings.ca.gov
Disclaimer
Verify fitment before ordering, including confirming the correct Duramax engine generation (LLY, LBZ, or LMM) for your specific model year and body style. This turbocharger is intended for compatible 2004.5–2010 GM 6.6L Duramax applications. Emissions compliance, warranty terms, and installation requirements may vary by vehicle and location.
Vehicle Fitment
| Year | Make | Model | Engine |
|---|---|---|---|
| 2004.5 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LLY Duramax |
| 2005 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LLY Duramax |
| 2006 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LLY/LBZ Duramax |
| 2007 | GM | Silverado/Sierra 2500 / 3500 (Classic Body Style) | 6.6L LLY/LBZ Duramax |
| 2007.5 | GM | Silverado/Sierra 2500 / 3500 (New Body Style) | 6.6L LMM Duramax |
| 2008 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LMM Duramax |
| 2009 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LMM Duramax |
| 2010 | GM | Silverado/Sierra 2500 / 3500 | 6.6L LMM Duramax |
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