Remanufactured GM Chevrolet Trailblazer 4.2L Cylinder Head 2002-2005 with Head Gasket Set and Bolts, Water Pump & Timing Set

Looking for a reliable replacement part for your GM engine? Our remanufactured GM Chevrolet Trailblazer 4.2L cylinder head with head gasket set, bolts, water pump, and timing set is designed to restore engine performance and provide long-lasting durability. Perfect for several GM and Isuzu models from 2002-2005, including the Chevy Trailblazer, this part meets or exceeds OEM specifications. Whether you’re repairing a damaged engine or performing an engine rebuild, this cylinder head is the ideal solution to get your vehicle running like new. The addition of the water pump and timing set ensures your engine operates efficiently and stays reliable for years to come.

Our remanufacturing team uses advanced techniques to ensure the highest quality and performance. Every cylinder head undergoes a thorough inspection and testing process to guarantee optimal functionality.

Vehicle Fitment

This remanufactured cylinder head with head gasket set, bolts, water pump, and timing set is compatible with the following models:

• Chevy TrailBlazer (2002-2005)
• Chevy TrailBlazer EXT (2002-2005)
• Buick Rainier (2004)
• GMC Truck Envoy (2002-2005)
• GMC Truck Envoy XL (2002-2005)
• GMC Truck Envoy XUV (2004-2005)
• Isuzu Ascender (2004-2005)

These vehicles, equipped with the 4.2L engine, will benefit from the perfect fit and easy installation of our remanufactured cylinder head with head gasket set, bolts, water pump, and timing set.

Why Choose Our Remanufactured Cylinder Head?

Here’s why this part is the right choice for your engine repair or rebuild:

• OEM Specifications: Meets or exceeds OEM standards for optimal performance and durability.
• Rigorous Testing: Every cylinder head undergoes thorough testing to ensure reliability and longevity.
• Affordable: A cost-effective alternative to purchasing a brand-new cylinder head.
• Versatile Compatibility: Compatible with several GM and Isuzu models, ensuring a perfect fit for your vehicle.

Key Features of the Remanufactured Cylinder Head

• Engine Type: 4.2L Inline 6 Cylinder
• Condition: Remanufactured, inspected, and tested for quality
• Application: Compatible with 2002-2005 Chevy, GMC, Buick, and Isuzu vehicles with a 4.2L engine
• Performance: Meets or exceeds OEM specifications for reliable, long-lasting performance
• Package Includes: Head gasket set, bolts, water pump, and timing set for easy installation

Benefits of Choosing a Remanufactured Cylinder Head

Choosing a remanufactured cylinder head with head gasket set, bolts, water pump, and timing set offers an affordable solution that maintains OEM quality standards. This part is rigorously tested for optimal performance and provides lasting durability, giving your engine the reliability it needs without the high cost of new parts.

Order Your Cylinder Head Today

Don’t let engine problems slow you down. Heavy Duty Parts Company offers high-quality, remanufactured cylinder heads at affordable prices. Order your remanufactured GM Chevrolet Trailblazer 4.2L cylinder head with head gasket set, bolts, water pump, and timing set today and restore your engine’s 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!

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