2014-2020 Remanufactured GM V8 5.3L L83Casting # 12620214 Pair Cylinder Heads W/ Head Gasket Set and Bolts, Water Pump & Timing Set

Restore your GM V8 5.3L engine’s performance with these Remanufactured Cylinder Heads. Designed for direct injection applications, these high-quality heads are built to OEM standards, ensuring long-lasting durability and improved engine efficiency. This complete package includes both cylinder heads, a head gasket set, bolts, water pump, and timing set for a comprehensive engine rebuild or replacement.

Fitment Data:

SIERRA 1500 PICKUP 14-18 5.3L
SIERRA 1500 PICKUP 19 classic style (mirrors mount in window corner), (5.3L)
SIERRA 1500 PICKUP 19 new style (mirrors mount on door skin), 5.3L
SIERRA 1500 PICKUP 20-21 5.3L
SIERRA DENALI 1500 14-21 5.3L
SILVERADO 1500 PICKUP 14-18 5.3L
SILVERADO 1500 PICKUP 19 classic style (mirrors mount in window corner), (5.3L)
SILVERADO 1500 PICKUP 19 new style (mirrors mount on door skin), 5.3L
SILVERADO 1500 PICKUP 20-21 5.3L
SUBURBAN 1500 15-18 (5.3L)
SUBURBAN 1500 19-21 5.3L
TAHOE 15-17
TAHOE 18-21 5.3L
YUKON 15-21 5.3L
YUKON XL 1500 15-21 5.3L

Product Features:

• Remanufactured to OEM Standards: Each cylinder head is carefully remanufactured to meet or exceed OEM specifications, ensuring top-quality performance.
• Casting #214 Fitment: Designed specifically for GM V8 5.3L engines with direct injection, ensuring a perfect fit and reliable performance.
• Precision Engineering: Optimized design for smooth operation, enhanced performance, and durability.
• Heavy-Duty Construction: Built for demanding applications, these cylinder heads provide lasting reliability.
• Complete Kit: Includes a head gasket set, bolts, water pump, and timing set, saving you time and ensuring a secure installation.

Core Return Required

Perfect For:

• Engine Rebuilds & Replacements: Restore your engine’s power and performance with this high-quality remanufactured cylinder head kit.
• Professional & DIY Installations: This complete kit includes all necessary components for an easy and hassle-free installation.

Why Choose Us?

• Guaranteed Fit: These remanufactured cylinder heads are engineered to meet or exceed OEM standards for a worry-free installation.
• Cost-Effective Solution: High-quality parts at an affordable price make this kit an excellent value for engine repairs or upgrades.
• Fast & Secure Shipping: Get your parts quickly and safely delivered to ensure minimal downtime and a smooth repair process.

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!

Order Today!

Bring your GM V8 engine back to life with our Remanufactured GM V8 5.3L Direct Injection Casting # 214 Pair Cylinder Heads, now bundled with a head gasket set and bolts for your convenience. Order today!

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