Brand New Subaru WRX STI B25 Cylinder Heads Premium Aftermarket Loaded (Pair)

Product Description:

Upgrade your engine with a brand new pair of Subaru WRX STI B25 cylinder heads, designed for 2004-2005 Subaru Baja, Forester, Impreza, and 2005-2006 Legacy GT 2.5L turbocharged engines. These premium aftermarket loaded cylinder heads are engineered for maximum durability and performance, making them the ideal choice for both performance builds and daily driving applications.

These fully assembled loaded cylinder heads come ready for installation, complete with all necessary components such as valves, springs, cams, and more. With superior craftsmanship and high-quality materials, these heads provide excellent performance and longevity, ensuring your engine runs smoothly for years to come. A core return is required for this purchase.

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Key Features:

• Fitment: Compatible with 2004-2005 Subaru Baja (2.5L, 4-cylinder, w/turbo), 2004-2005 Subaru Forester (w/turbo), 2004-2005 Subaru Impreza (2.5L, w/turbo), and 2005-2006 Subaru Legacy GT (2.5L, DOHC).
• Premium Aftermarket Quality: Built for high performance and long-lasting reliability, offering excellent value for your Subaru engine rebuild.
• Fully Assembled: Ready to install with valves, springs, cams, and other essential components already in place.
• Ideal for Turbocharged Models: Designed specifically for 2.5L turbo engines, these heads provide optimal airflow and engine efficiency.
• Enhanced Durability: Made from high-quality materials to withstand high-performance demands.

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Fitment Data:

• Subaru Baja: 2004-2005 2.5L, 4-cylinder, w/turbo
• Subaru Forester: 2004-2005 w/turbo
• Subaru Impreza: 2004-2005 2.5L, w/turbo
• Subaru Legacy GT: 2005-2006 2.5L, DOHC Turbo

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Important Information:

• These cylinder heads are designed for turbocharged 2.5L engines in the models listed above.
• Ensure that your vehicle matches the fitment details before purchasing.

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Why Choose Our Premium Aftermarket Loaded Cylinder Heads?

• Ready for Installation: With all necessary components already installed, these heads are ready to be dropped into your engine.
• Engineered for Performance: Designed to enhance the performance of your turbocharged engine and provide excellent airflow.
• Built to Last: Constructed from premium materials for optimal reliability, even under high-stress conditions.
• Cost-Effective: Save on labor costs with a fully assembled cylinder head at an affordable price.
• Warranty Included: These cylinder heads come with a warranty for added peace of mind.

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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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Order Today!

Ready to restore your vehicle’s performance? Buy your Brand New Subaru WRX STI B25 Cylinder Heads today and get back on track!

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