Remanufactured GM V6 4.3L Direct Injection Casting # 344 Single Cylinder Head

Product Description:

Restore your engine’s performance with our Remanufactured GM V6 Direct Injection Casting # 344 Single Cylinder Head. This high-quality replacement part is engineered for GM V6 engines with direct injection. It undergoes a thorough remanufacturing process to meet or exceed OEM standards, ensuring lasting durability and reliable performance. A core return is required for this purchase.

Designed for rebuilds and replacements, our remanufactured GM V6 cylinder head offers a cost-effective solution for restoring engine efficiency. Whether you’re performing a complete engine rebuild or upgrading your current setup, this cylinder head provides top-tier performance.

Product Features:

• Remanufactured Quality: Fully restored to meet or exceed OEM standards.
• Casting #344: Designed for GM V6 engines with direct injection.
• Precision Engineering: Ensures smooth engine operation and peak performance.
• Durable Construction: Built to withstand high-performance applications.
• Perfect for Rebuilds & Replacements: Fits various GM V6 engine models.
• Core Return Required

Fitment Data:

SIERRA 1500 PICKUP 14-16 4.3L
SILVERADO 1500 PICKUP 14-16 4.3L EXPRESS 2500 VAN 18-24 4.3L
EXPRESS 3500 VAN 18-24 4.3L
SAVANA 2500 VAN 18-24 4.3L
SAVANA 3500 VAN 18-24 4.3L
SIERRA 1500 PICKUP 17-18 4.3L
SIERRA 1500 PICKUP 19 new style (mirrors mount on door skin), 4.3L
SIERRA 1500 PICKUP 20-21 4.3L
SILVERADO 1500 PICKUP 17-18 4.3L
SILVERADO 1500 PICKUP 19 new style (mirrors mount on door skin), 4.3L
SILVERADO 1500 PICKUP 20-21 4.3L

The Remanufactured GM V6 Cylinder Head provides an excellent solution for restoring engine performance at an affordable price. Get your engine back in top shape with this durable and reliable part.

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!

Why Choose Us:

• Guaranteed Fit: Our cylinder heads meet or exceed OEM standards.
• Affordable Quality: High-performance parts at a competitive price.
• Fast Shipping: Get your parts quickly and securely.

Shop

General Motors