Remanufactured Pair GM Chevrolet 6.0L 6.2L LS3 #823 Casting Cylinder Heads with Head Gasket Set & Bolts, Water Pump & Timing Set

Product Description:
Upgrade your engine with the Remanufactured GM LS3 Cylinder Heads Kit. Perfectly designed for 6.0L and 6.2L LS3 V8 engines, this kit includes remanufactured GM LS3 heads, high-quality head gaskets, and bolts, along with a water pump & timing set for complete engine restoration. These precision-machined heads improve airflow and overall engine efficiency, restoring your engine to OEM specifications for better power and fuel efficiency.

Crafted from high-quality aluminum, these remanufactured GM LS3 heads feature an improved airflow design, ensuring maximum performance and reliability. Whether you’re restoring your engine or enhancing its performance, this kit provides everything needed for a hassle-free installation.

Key Features:

• Casting #: 823 (Perfect for GM 6.0L 6.2L LS3 engines)
• Material: High-quality aluminum for lightweight and optimal cooling
• Compatibility: Designed for 6.0L and 6.2L LS3 V8 engines
• Complete Kit: Includes two cylinder heads, head gaskets, bolts, water pump, and timing set
• Rebuilt to OEM Specifications: Precision-machined for improved power, airflow, and efficiency
• Performance Upgrade: Ideal for engine restoration or performance builds
• Core Return Required

Vehicle Fitment:

• AVALANCHE 1500: 2007-2009 (6.0L), 2010 (6.2L)
• CAMARO: 2010-2012 (6.2L), 2013-2015 (6.2L, VIN J – L99, VIN W – LS3)
• CAPRICE: 2011 (6.0L), 2012-2017 (6.0L)
• CORVETTE: 2008 (6.2L), 2009-2013 (6.2L, VIN W – LS3)
• ESCALADE: 2007-2008 (6.0L), 2009-2013 (6.2L), 2014 (6.2L)
• ESCALADE ESV: 2007-2014 (6.0L)
• ESCALADE EXT: 2007-2013 (6.0L)
• G8: 2008-2009 (6.0L), 2009 (6.2L)
• HUMMER H2: 2008-2009 (6.2L)
• SAVANA 2500 VAN: 2008-2010 (6.0L), 2011-2016 (6.0L)
• SAVANA 3500 VAN: 2008-2010 (6.0L), 2011-2016 (6.0L)
• SIERRA 1500 PICKUP: 2007 (6.0L), 2008-2009 (6.0L), 2009-2013 (6.2L)
• SIERRA 2500 PICKUP: 2007-2012 (6.0L), 2013-2019 (6.0L)
• SILVERADO 1500 PICKUP: 2007 (6.0L), 2008-2009 (6.0L), 2009-2013 (6.2L)
• YUKON: 2007-2014 (6.2L)

Why Choose the Remanufactured GM LS3 Cylinder Heads Kit?
This Remanufactured GM LS3 Cylinder Heads Kit is the ideal solution for restoring or upgrading your engine. The kit includes everything you need for a complete rebuild—remanufactured GM LS3 heads, head gaskets, bolts, water pump, and timing set. It’s designed to maximize performance, durability, and efficiency, making it perfect for both restorations and performance builds. All components are rebuilt to OEM specifications, ensuring the best fit and function.

Quality Assurance:

• Every part is meticulously cleaned, inspected, and tested to meet or exceed OEM standards.
• The heads are precision-machined for optimal airflow, reducing weight and improving cooling efficiency.
• The included head gaskets and bolts ensure a perfect seal for improved engine performance and reliability.

Warranty Information:

• Includes a 2-year, unlimited mileage warranty for peace of mind.
• Warranty covers defects in material and workmanship, excluding damage from improper installation or misuse.

Heavy Duty Parts Company – Core Returns Policy

Effective December 17, 2025

At Heavy Duty Parts Company, core returns are essential to our ability to provide high-quality, cost-effective cylinder heads. Returned cores supply critical components—such as keepers, springs, and retainers—that are vital to proper engine performance and allow us to maintain OEM-level quality.

No Upfront Core Charge

Unlike many suppliers, we do not charge a core fee upfront. Instead, we rely on customers to return their used cores within the required timeframe.

Core Return Requirements

• Cores are due within 30 days of the purchase date

• If a core is not returned within 60 days, the product warranty is void

• Unreturned cores will be charged as follows:

  • Cylinder heads under $600: $200 per unreturned core

  • Cylinder heads $600 and above: $400 per unreturned core

Customers needing additional time may contact us to request an extension. Approved extensions will prevent core charges from being applied.

Core Return Process

Cylinder heads are shipped with prepaid core return labels included in packets attached to the outside of each box. If labels are missing, customers should contact us for replacements prior to returning the core.

Core Eligibility

Some cylinder heads do not require a core return. In certain cases, core requirements may be waived at our discretion.

Why Core Returns Matter

• Reused core components help maintain OEM-quality standards

• Core returns allow us to keep pricing competitive

• Recycling cores supports sustainability by reducing waste and conserving resources

This policy applies to all purchases made on or after December 17, 2025.

Send Back All Components

To ensure the quality and integrity of our remanufacturing process, we ask that you return all components that were originally included with your new cylinder head. This includes items such as:

• Rocker arms
• Camshafts (if applicable)
• Any other hardware that came with your purchase

Easy & Free Core Return Process

• Each purchase includes a prepaid core return label in a plastic sleeve on the box.
• Simply pack your core with all included components, attach the label, and drop it off with the carrier—no extra cost to you.
• Returned cores undergo inspection and recycling, ensuring maximum efficiency.

Customer Partnership & Sustainability

By returning your core and its components, you help maintain a reliable supply chain, ensuring we can continue offering top-quality products at the best prices. This process not only benefits your wallet but also contributes to a greener and more efficient automotive industry.

We appreciate your support in keeping our business and the industry running smoothly!

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