LBZ / LLY Duramax Head Gasket Set – Grade “C” Oversize Gaskets (2004–2007)
Complete Top-End Gasket Kit with 1.05mm Head Gaskets (Left & Right)
This Duramax head gasket set is built for 2004–2007 LLY and LBZ 6.6L Duramax engines and includes everything you need for a complete top-end rebuild or head gasket replacement. The set features Grade “C” (1.05mm) oversize MLS head gaskets for both left and right banks, ideal for engines with decked blocks or heads requiring a thicker gasket for proper compression and sealing.
✅ Features:
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Complete top-end gasket set for 6.6L Duramax
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Includes Grade “C” (1.05mm) MLS head gaskets – Left and Right
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Designed for engines with resurfaced heads or blocks
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Built from high-quality materials for reliable, long-lasting sealing
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Perfect for stock rebuilds, performance applications, or preventative repairs
🔧 Fitment:
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Fits 2004–2007 Chevy Silverado HD and GMC Sierra HD
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Compatible with LLY and LBZ 6.6L Duramax diesel engines
Ensure long-term durability and proper sealing with this premium LBZ/LLY Duramax Head Gasket Set, engineered for performance and reliability in high-load or tuned applications.
🚚 Shipping & Delivery Information
At PowerStroke Products, we are committed to getting your parts to you quickly, safely, and reliably. We partner with trusted carriers to ensure your order arrives on time and in great condition.
📦 Standard Shipping
We ship most of our automotive parts through UPS or FedEx, depending on your location and the size of your order.
Orders are typically processed within 1–2 business days.
Shipping times vary based on your location, but most orders arrive within 2–7 business days after processing.
Tracking information will be provided as soon as your order ships.
🏋️♂️ Freight Shipping
Some of our parts — such as engines, cylinder heads, or items over 150 lbs — require freight shipping.
Freight deliveries are handled via reliable LTL carriers.
You will be contacted to schedule delivery, and a signature may be required upon arrival.
Please ensure you have the appropriate equipment or assistance to receive large or heavy shipments.
📍 Delivery Locations
We currently ship within the continental United States. If you're located in Alaska, Hawaii, or outside the U.S., please contact us before placing your order to explore available shipping options.
❗ Important Notes
We do not ship to P.O. Boxes — please provide a physical shipping address.
Ensure all shipping details are correct at checkout to avoid delays or rerouting fees.
If a package arrives damaged or incomplete, please contact us within 48 hours so we can assist you promptly.
