2004.5-2007 GM/CHEVROLET 6.6L DURAMAX LLY & LBZ BASIC TURBO REBUILD KIT GT3788VA
Restore turbocharger performance with this complete GT3788VA turbo rebuild kit for 2004.5–2007 GM/Chevrolet 6.6L Duramax diesel engines. Designed specifically for the LLY and LBZ models, this kit includes all critical components needed to rebuild your factory variable geometry turbo (VGT) and help eliminate common issues like excessive shaft play, oil leaks, and poor boost response.
This kit is ideal for high-mileage trucks or performance builds that require a fresh, reliable turbo foundation. Whether you’re tackling the rebuild yourself or handing it off to a trusted diesel shop, this kit offers OE-quality components to get the job done right.
What’s Included in the Kit:
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360º Brass Thrust Bearing & Collar
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Journal Bearings
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Bolt Gap Oil Seals
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Compressor Housing (Inner & Outer)
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(11) Compressor Housing Bolts
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VGT Actuator Rod Cap O-Rings & Snap Rings
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(5) VGT Solenoid O-Rings
Key Features & Benefits:
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Restores lost boost performance and efficiency
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Reduces oil leakage and shaft play
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Precision-fit components ensure OEM-level reliability
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Designed for the Garrett GT3788VA turbo used in LLY & LBZ engines
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Cost-effective solution for extending turbocharger life
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Great for DIY or professional installations
Fitment Verification:
Check the 8th digit of your VIN to confirm compatibility:
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LLY (2004.5–2005): VIN "2"
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LBZ (2006–2007): VIN "D"
Installation Note:
For best results and to maintain the longevity of your turbo rebuild:
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Change engine oil and oil filter
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Replace air filter
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Thoroughly clean air intake tubes and charge piping
Neglecting to remove contaminants from the intake system can result in premature turbo failure. Improper installation will void warranty.
Vehicle Compatibility:
Engine: 6.6L Duramax Diesel
Turbo Model: Garrett GT3788VA
Fits:
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2004.5–2005 Chevrolet Silverado/GMC Sierra 2500HD & 3500 (LLY)
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2006–2007 Chevrolet Silverado/GMC Sierra 2500HD & 3500 (LBZ)
Shipping Disclaimer:
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✔️ Orders are processed within 1 business day (Monday–Friday).
✔️ Orders placed on weekends or holidays will be processed on the next business day.
✔️ Tracking information will be provided once the item ships.
✔️ Shipping to PO Boxes, APO/FPO may be limited based on carrier restrictions.
California Proposition 65 Warning:
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
