Remanufactured Nissan 3.3L V6 Frontier Quest Xterra Cylinder Heads Casting # OWO Pair

Description
Upgrade your vehicle with a pair of remanufactured Nissan 3.3L V6 cylinder heads. These Nissan 3.3L V6 cylinder heads are professionally rebuilt by AERA-certified machinists, ensuring superior durability and performance. Designed to provide the perfect fit, these remanufactured cylinder heads are compatible with a range of Nissan, Infiniti, and Mercury models. Whether you drive a Nissan Frontier, Xterra, or Quest, these heads will restore your engine to peak performance. Backed by a 2-year unlimited mileage warranty, they offer long-lasting reliability and peace of mind.

Key Features:

• Professional Rebuild: Rebuilt by AERA-certified machinists for top-quality performance.
• Unlimited Mileage Warranty: Includes a 2-year unlimited mileage warranty for durability and peace of mind.
• Complete Pair: Comes with both driver and passenger side Nissan 3.3L V6 cylinder heads.
• Wide Compatibility: Fits 1996-2004 Nissan Frontier, Pathfinder, Quest, Xterra, 1997-2000 Infiniti QX4, and 1999-2002 Mercury Villager.
• Casting Number Required: Please verify the casting number before ordering to ensure compatibility.
• Core Return Required: A core return is necessary with each order.

Fitment Data:

• Frontier (1999-2004): 6-cylinder (SOHC)
• Quest (1999-2002): 6-cylinder (SOHC)
• Xterra (2000-2004): 6-cylinder (SOHC)

Note:
Please verify the casting number before purchasing. If unsure, provide your VIN number for further assistance. These remanufactured Nissan 3.3L V6 cylinder heads are sold strictly by casting number for proper fitment.

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!

Nissan

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