Honda J35 3.5L Pair Cylinder Heads – Remanufactured Casting # R70 (Valves and Springs Only)

Product Description:
Upgrade your engine with a Honda 3.5L Cylinder Heads PAIR (Casting # R70). These remanufactured cylinder heads are designed for Honda vehicles like the Odyssey, Pilot, and Ridgeline. This product includes valves and springs only—no camshafts or rocker assembly. Whether you need a reliable replacement or a performance upgrade, these heads provide a cost-effective solution. They offer the perfect way to restore engine function without replacing the entire engine.

The Honda 3.5L Cylinder Heads PAIR is remanufactured to meet the specifications of the original factory parts. With their precise engineering and high-quality components, these heads will improve your engine’s efficiency and performance. They are designed to restore optimal engine operation by replacing worn or damaged cylinder heads. You’ll enjoy improved combustion efficiency, reduced emissions, and smoother overall engine operation.

These cylinder heads are perfect for the following vehicles:

Fitment:

• Odyssey 2008-2017 (3.5L)
• Pilot 2009-2015 (3.5L)
• Ridgeline 2009-2014 (3.5L)

Our pair of Honda 3.5L cylinder heads is the ideal choice for those seeking a quick, affordable way to restore their vehicle’s engine performance. With the correct casting number R70, installation is straightforward, and you can rely on these heads to restore the power and efficiency of your engine.

Key Features:

• Casting Number: R70
• Compatibility: Fits 2008 to 2017 Honda Odyssey, 2009 to 2015 Honda Pilot, and 2009 to 2014 Honda Ridgeline models
• Condition: Remanufactured cylinder heads with valves and springs
• Core Return Required

Important Note:
This listing is for a pair of Honda 3.5L cylinder heads with valves and springs only, and does not include camshafts or rocker assembly. Please verify your requirements before purchasing.

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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