Product Description
Restore factory response and reliable boost on your 2004.5–2005 6.6L Duramax LLY with the INDUSTRIAL INJECTION IISCHEVY66Y remanufactured Garrett stock turbo. Each unit is professionally rebuilt and quality-checked to OEM spec for a clean, direct bolt-in replacement—no tuning required for stock applications.
Fitment
- 2004.5–2005 GM/Chevy Silverado & GMC Sierra 2500/3500 HD — 6.6L Duramax LLY
What’s Included
- Remanufactured Garrett OE-style VGT turbocharger (stock replacement)
- Actuator/lever assembly installed (OE-style)
- Unit is ready to install (gaskets/hardware sold separately)
Why It’s Right For Your LLY
- Direct fit stock replacement for the LLY platform
- OE-style variable geometry for factory drivability and towing
- Remanufactured by Industrial Injection’s turbo shop for OE reliability
- Core return required (refundable per CPP core policy)
Recommended Parts (CPP Internal Links)
- Turbo Installation Kit — 2001–2010 Duramax (LB7/LLY/LBZ/LMM)
- MAHLE F32918 Up-Pipe to Turbo Gasket (2001–2016)
- MAHLE F31903 Manifold-to-Up-Pipe Gaskets (2001–2016)
- Downpipes & Up-Pipes — Duramax
- Industrial Injection Stock CP3 — 2004.5–2005 LLY
Helpful Notes
- Verify VGT vane function and address any boost leaks during install.
- Replace all disturbed gaskets and clamps for best results.
- Core return is required; follow CPP Diesel’s core instructions after install.
FAQ
Is tuning required after installing this turbo?No. This is a stock-replacement unit for the LLY and is intended to operate with factory calibration. Custom tuning is only needed if other performance parts are added.
Does this include the necessary gaskets?Gaskets and hardware are sold separately. See the Recommended Parts section above for CPP kits and gaskets that fit LLY.
Is there a core charge?Yes. A refundable core charge applies and is credited when an acceptable core is returned within the stated window. See CPP’s checkout for details.
What warranty is included?Industrial Injection provides a 1-year warranty on remanufactured stock turbos when installed per manufacturer guidelines.
| Specifications for INDUSTRIAL INJECTION IISCHEVY66Y | |
|---|---|
| Brand | Industrial Injection |
| Part Number | IISCHEVY66Y |
| GTIN | Not specified |
| UPC | Not specified |
| Engine Compatibility | 2004.5–2005 GM 6.6L Duramax LLY |
| Configuration | Remanufactured Garrett stock turbocharger (exchange) |
| Country of Origin | Not specified |
| Core Charge | $400 (refundable per supplier policy) |
| Shipping Weight | Approx. 38 lb |
| Package Dimensions | 16" × 16" × 16" |
| Shipping Method | Ground (parcel) |
| Prop 65 Warning | This product can expose you to chemicals including lead and chromium, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. Learn more. |
