New Pair 4.3 GM Chevrolet Cylinder Heads # 113 Casting W/ Head Gasket Set and Bolts, Water Pump & Timing Set

Upgrade your 4.3L GM Chevrolet engine with premium 4.3 GM Cylinder Heads # 113, now paired with a head gasket set, bolts, water pump, and timing set for a complete installation solution. Designed for versatile applications, including S10, Sonoma trucks, Astro Vans, and marine engines, these heads deliver reliable performance, exceptional durability, and an easy installation experience.

Key Features of 4.3 GM Chevrolet Cylinder Heads #113

• Vehicle Compatibility: Perfect for 4.3L GM Chevrolet engines, including S10, Sonoma trucks, Astro Vans, and marine applications like Mercruiser engines.
• Precision #113 Casting for OEM Fit: Guarantees exact OEM fit and compatibility for easy installation.
• Fully Loaded with Preloaded Valves and Springs: Saves time and effort during installation.
• Enhanced Durability for Daily Driving, Towing, and Marine Use: Engineered to withstand demanding conditions.
• Head Gasket Set, Bolts, Water Pump & Timing Set Included: Ensures a complete, hassle-free installation with all essential components.

Applications for 4.3L GM Chevrolet Cylinder Heads #113

• 4.3L GM Chevrolet engines
• Compatible with GM S10, Sonoma trucks, Astro Vans, and Mercruiser marine engines

These cylinder heads are designed to provide long-lasting performance and reliability. Enjoy a smooth, powerful engine with this versatile pair of 4.3 GM Chevrolet cylinder heads, complete with all necessary components for installation.

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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