6.6L duramax head LBZ loaded Heavy Duty Valve Springs Left
6.6L Duramax LBZ Loaded Cylinder Head – Left Side w/ Heavy-Duty Valve Springs
High-Performance Replacement Head for 2006–2007 Duramax Builds
Upgrade the left side of your 2006–2007 GM 6.6L LBZ Duramax with this fully loaded cylinder head, pre-assembled with heavy-duty valve springs and all-new valvetrain components. Designed for performance, towing, and reliability, this head is built from a brand-new casting—no core required—and ready to install out of the box.
Whether you’re replacing a cracked OEM head or building a high-horsepower setup, this head offers increased valve control and long-term durability.
✅ Features:
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Brand-new casting – not remanufactured, no core required
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Fully assembled with HD valve springs, new valves, seals, retainers, and locks
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Designed to handle increased boost, RPM, and towing demands
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Left (driver) side cylinder head
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1-Year / Unlimited Mileage Warranty
🔧 Fitment:
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Fits 2006–2007 Chevy Silverado HD & GMC Sierra HD with the 6.6L LBZ Duramax diesel engine
This Duramax LBZ Loaded Head – Left Side is the perfect upgrade or replacement for diesel owners looking for power, strength, and confidence under pressure.
| Engine | |
|---|---|
| Engine Size |
6.6L |
🚚 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.
