Remanufactured Honda J35 3.5L RDJ Casting Cylinder Head Left

Please verify the cylinder head you are replacing has casting number RGL or RDJ

Revitalize the performance and efficiency of your Honda with the Remanufactured Honda 3.5L RDJ Casting Cylinder Head. This remanufactured cylinder head is engineered to meet or exceed OEM specifications, delivering consistent, reliable performance. By restoring the original function of your vehicle’s engine, this RDJ casting cylinder head ensures that your Honda continues to provide the power, fuel efficiency, and durability you expect from a well-maintained 3.5L engine.

Whether you’re experiencing a loss of engine power, reduced fuel economy, or increased engine noise, replacing your cylinder head can significantly improve your vehicle’s performance. Remanufactured to the highest standards, this RDJ casting cylinder head offers a cost-effective, environmentally friendly solution that breathes new life into your Honda’s engine. A core return is required for this purchase.

Fitment and Compatibility
This RDJ casting cylinder head is specifically designed to fit NON-VCM Honda models equipped with the 3.5L engine. It offers precise fitment, ensuring easy installation and reliable long-term operation.

• • Honda Odyssey: Compatible with Honda Odyssey models that use the 3.5L engine featuring the RDJ casting number cylinder head.

  • Fits trims: EX,LX

  • Does NOT fit trims: EX-L, Touring 

  • Honda Pilot: Designed for use in Honda Pilot models equipped with the 3.5L engine and RDJ casting number cylinder head.

  • Honda Ridgeline: Fits seamlessly into Honda Ridgeline models utilizing the 3.5L engine with RDJ casting number cylinder head, ensuring enhanced performance and durability.

ODYSSEY 05-10 (3.5L), EX,
ODYSSEY 05-10 (3.5L), LX,
ODYSSEY 08-10 (3.5L), DX (Canada market),
ODYSSEY 10 (3.5L), SE (Canada market),
PILOT 05 (3.5L), US built,
PILOT 06-07 (3.5L), 4×4, US built,
PILOT 08 (3.5L), 4×4,

Product Features

1. OEM-Quality Remanufacturing Process
This RDJ casting cylinder head is carefully remanufactured to meet the original equipment manufacturer (OEM) specifications. During the remanufacturing process, each cylinder head undergoes rigorous testing, machining, and restoration, ensuring that it meets the same performance and reliability standards as a new cylinder head. Each part is pressure tested, machined, and fitted with new valve guides and seals to ensure that your engine performs as expected.

By choosing a remanufactured cylinder head, you get the benefit of like-new performance at a fraction of the cost. Plus, it’s an eco-friendly option as it involves reusing core components, helping to reduce waste.

2. Restored Engine Power and Efficiency
This remanufactured RDJ casting cylinder head is designed to restore your Honda’s engine to its peak performance. With optimized airflow and combustion, it helps improve engine power, torque, and overall efficiency. Whether you’re looking to improve fuel economy or regain lost horsepower, this remanufactured cylinder head helps ensure your engine is performing at its best.

3. High-Strength Materials for Long-Lasting Performance
Constructed from premium aluminum, this RDJ casting cylinder head is built to withstand the extreme temperatures and pressures associated with the 3.5L engine. Whether you’re commuting daily or taking on heavier loads, this cylinder head delivers the durability and resilience you need to keep your vehicle running smoothly under any conditions.

4. Rigorous Quality Control Testing
Every RDJ casting cylinder head is put through comprehensive quality control procedures to ensure flawless operation. This includes thorough pressure testing to detect cracks or imperfections, as well as detailed inspections of the valve seats, guides, and sealing surfaces. This level of care ensures you receive a remanufactured cylinder head that delivers consistent, dependable performance.

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!

Specifications

• Engine Compatibility: Designed for 3.5L Honda engines with RDJ casting number cylinder head
• Material: Constructed from high-strength aluminum for durability
• Testing: Pressure tested and inspected for any cracks or defects
• Includes: Fully remanufactured RDJ casting cylinder head with new valve guides and seals installed

Benefits of Choosing Our Remanufactured Honda 3.5L RDJ Casting Cylinder Head

• Restored Engine Performance: A remanufactured cylinder head can bring your engine back to its original performance levels, improving power output and fuel efficiency.
• Durable and Reliable: Built to last, this remanufactured cylinder head is designed to withstand the challenges of everyday driving, towing, and heavy loads.
• Environmentally Friendly: By choosing a remanufactured cylinder head, you’re contributing to a more sustainable automotive industry by reducing waste and reusing essential components.
• High-Quality, Affordable Solution: Experience OEM-level performance at a fraction of the cost of a new cylinder head, all while maintaining the durability and reliability you need.

Ideal Applications

This remanufactured RDJ casting cylinder head is an ideal replacement for Honda owners who need a cost-effective solution to restore their engine’s performance. Whether your cylinder head has become cracked, warped, or worn, this replacement is a perfect fit for restoring factory-level performance. It’s particularly well-suited for those who rely on their vehicles for long-distance driving, daily commuting, or towing.

Installation and Warranty Information

Our remanufactured Honda 3.5L RDJ Casting Cylinder Head is engineered for a precise fit, making installation straightforward. For optimal performance, professional installation is highly recommended. This cylinder head is covered by a two-year warranty, protecting you against any defects in materials or workmanship. This ensures peace of mind and helps guarantee long-lasting satisfaction.

Order Today for Long-Lasting Engine Performance

Bring your Honda’s engine back to life with our Remanufactured Honda 3.5L RDJ Casting Cylinder Head. Featuring OEM-quality remanufacturing, rigorous testing, and a two-year warranty, this cylinder head is designed to provide long-lasting durability and reliable performance. Order now and take advantage of our easy core return process and exceptional value!

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