New Toyota Tundra Tacoma 4Runner 3.4 DOHC #5VZFE Cylinder Head Left

Upgrade your Toyota Tundra, Tacoma, or 4Runner with our brand-new 5VZ Toyota 3.4 Cylinder Heads. Engineered for durability and performance, these cylinder heads are the perfect replacement for your worn or damaged originals. Manufactured to precise specifications, they provide optimal fitment and long-lasting reliability, ensuring your engine runs smoothly and efficiently.

Key Features:

• High-Quality Construction: Crafted from premium materials, these cylinder heads offer superior strength and durability, built to withstand the rigors of daily driving and off-road adventures.
• OEM Specifications: Designed to meet or exceed original equipment manufacturer (OEM) standards, ensuring a perfect fit for Toyota Tundra, Tacoma, and 4Runner models with the 3.4L DOHC #5VZFE engine.
• Fully Assembled: These cylinder heads come fully loaded with valves, springs, and retainers, making them ready for installation right out of the box.
• Core Return Required

Benefits:

• Enhanced Engine Performance: Optimized for better airflow and combustion, these cylinder heads improve engine performance, fuel efficiency, and power output.
• Long-Lasting Durability: Built with reinforced materials to prevent cracking and wear, ensuring a longer lifespan and reducing the need for frequent repairs or replacements.
• Easy Installation: These cylinder heads are designed for a direct fit, making the installation process simple and hassle-free, reducing downtime.

Fitment Data:

4 RUNNER 01-02 (6 cylinder, 5VZFE engine), 

4 RUNNER 96-00 6 cylinder (5VZFE engine), 

T100 95-98 6 cylinder (5VZFE engine), 

TACOMA 95-04 6 cylinder (5VZFE engine), 

TUNDRA 00 6 cylinder, 

TUNDRA 01-04 6 cylinder (5VZFE engine),

Technical Specifications:

• Engine Compatibility: 3.4L DOHC #5VZFE
• Fits: Toyota Tundra, Tacoma, 4Runner
• Cylinders: V6 engine
• Ready to Install: Fully assembled with valves, springs, and retainers

Why Choose Our Toyota 3.4L DOHC Cylinder Heads?

Invest in a high-quality product designed to enhance the performance and reliability of your Toyota truck or SUV. Our 3.4L DOHC cylinder heads offer the durability and performance you need to keep your engine running smoothly, whether on the road or off the beaten path.

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!

Shipping Information

We ship exclusively to the lower 48 states. Insurance, packaging, and handling are included in the shipping cost to ensure safe and secure delivery.

Warranty Information

This product is backed by a two-year unlimited mileage parts warranty. The warranty covers parts only and does not include labor or incidental costs.

Explore More Toyota Parts

Looking for more engine components for your Toyota? Check out our full selection of Toyota cylinder heads and parts to find what you need for your vehicle.

External Resource:

To learn more about maintaining and optimizing your Toyota engine, visit this comprehensive Toyota engine maintenance guide to ensure your engine stays in top condition.

Contact Us

For more details and assistance, visit our website and explore our extensive selection of high-quality Toyota 5VZ Toyota 3.4 Cylinder Head at Heavy Duty Parts Company.

5vz Toyota 3.4 Cylinder Head