New Dodge V8 Magnum 5.2 5.9 318 360 Cylinder Heads Pair

New Dodge Jeep Magnum 5.2 5.9 318 360 Cylinder Heads

Upgrade your engine with these brand-new aftermarket cylinder heads designed to fit Dodge, Jeep, and Chrysler models. These heavy-duty heads are compatible with Dodge Dakota, Durango, Ram, Jeep Grand Cherokee, and Chrysler Diplomat, covering models from 1992 to 2004. Sold as a pair, these heads offer superior durability compared to factory options, being thicker and stronger.

When it comes to maintaining or upgrading your vehicle, settling for anything less than the best is simply not an option. Our Dodge, Jeep, and Chrysler Magnum 5.2L & 5.9L cylinder heads are more than just a replacement part—they’re a step up in quality and durability that your engine deserves. Engineered to perfection, these cylinder heads are the result of meticulous craftsmanship, designed to withstand the rigors of everyday driving while delivering peak performance even in the most demanding conditions.

Each cylinder head is crafted from top-grade cast iron, ensuring unparalleled strength that surpasses standard OEM options. The robust construction is thicker and more resilient in all the critical areas, providing a level of durability that keeps your engine running smoothly, mile after mile. Whether you’re tackling rugged off-road trails in your Jeep Grand Cherokee or hauling heavy loads in your Dodge Ram, these cylinder heads are built to take on the challenge.

But it’s not just about strength—our cylinder heads are precision-engineered to enhance your vehicle’s overall performance. With stock size valves and a perfect fit for your engine, you’ll notice improved efficiency, smoother operation, and the kind of reliability that gives you confidence on the road.

Say goodbye to the worry of premature wear and tear. With our heavy-duty aftermarket cylinder heads, you’re investing in a component that’s designed to last. This isn’t just a repair—it’s an upgrade that will keep your engine purring like new for years to come.

When you choose these cylinder heads from Heavy Duty Parts Company, you’re choosing quality, performance, and peace of mind. Don’t settle for less—elevate your driving experience with the best in engine components.

Key Features

• Superior Durability: Constructed from high-strength materials, this cylinder head is much thicker and stronger in all the critical areas compared to the factory head, ensuring long-lasting performance.
• Compatibility: Fits Dodge Dakota, Durango, Ram, Jeep Grand Cherokee, and Chrysler Diplomat with 5.2L, 5.9L, 318, and 360 OHV engines from 1992 to 2004.
• Construction: Heavy-duty aftermarket design, significantly thicker and stronger than OEM heads.
• Valves: Stock size valves.
• Weight: 130 pounds for the pair.

Core return required

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!

Additionally, learn More and Shop with Us

• What Is The Magnum Engine? – 5.9L Magnum Engine
• Explore our other products – Shop