55565291 55573669 | 1.4L DOHC Cylinder Head for Chevrolet Cruze, Trax, Sonic, Buick Encore – Remanufactured OEM

Premium Remanufactured GM 1.4L Cruze Cylinder Head

Casting Numbers: 55565291 | 55573669

Restore your engine’s compression and cooling efficiency with our professionally remanufactured cylinder head. Engineered for the GM 1.4L DOHC (LUV/LUJ) Ecotec engine, this head is the definitive solution for common cracking and overheating issues found in the Chevy Cruze, Sonic, Trax, and Buick Encore.

Every unit is chemically cleaned, multi-stage pressure tested, and precision-surfaced to ensure a perfect head gasket seal.

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Why Choose This Head?

• Fully Loaded & Ready: Arrives with valves, high-tension springs, and retainers pre-installed. Save hours of labor—simply transfer your cam phasers and bolt it down.

• Precision Valve Job: Features a multi-angle valve seat grind and high-temp Viton valve seals to stop oil consumption and maximize vacuum.

• Verified Reliability: We pressure test every internal cooling passage to guarantee no porosity or hairline cracks—the #1 failure point on 1.4L turbo heads.

• Plug-and-Play: Direct OEM replacement designed for a seamless fit without the need for additional machine shop work.

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Vehicle Compatibility & VIN Guide

To ensure a perfect fit, please verify your vehicle year and VIN requirements:

Model	Years	Engine / VIN Notes
Chevrolet Cruze	2011–2015	1.4L Turbo
Chevrolet Cruze	2016	1.4L (VIN P, 4th Digit, Limited Model)
Chevrolet Sonic	2012–2018	1.4L Turbo
Chevrolet Sonic	2019–2020	1.4L Turbo
Chevrolet Trax	2013–2014	1.4L (VIN B, 8th Digit)
Chevrolet Trax	2015–2020	1.4L (VIN B, 8th Digit)
Chevrolet Trax	2021	1.4L (VIN B, 8th Digit, Opt LUV)
Buick Encore	2013–2015	1.4L Turbo
Buick Encore	2016–2019	1.4L (VIN B, 8th Digit, Opt LUV)
Buick Encore	2020	1.4L Turbo
Buick Encore	2021	1.4L (VIN B, 8th Digit, Opt LUV)

Discover More and Shop with Us

Explore more about our premium cylinder head and other high-quality engine components at Heavy Duty Parts Company. Visit our product page for expert advice and detailed product information. Discover how our products can enhance your vehicle’s performance and reliability.

Commitment to Customer Satisfaction

At Heavy Duty Parts Company, we are dedicated to providing top-notch automotive components and exceptional customer service. Our cylinder heads come with a satisfaction guarantee, ensuring you receive a product that meets the highest standards of quality and performance.

Contact Us

This cylinder head comes with a TWO year warranty.

For further inquiries or assistance, please reach out to our support team. We are here to help you find the right products to keep your vehicle running at its best.

For more information on this engine, check this out: GM Authority – GM Engines L2Z

1.4 Cruze cylinder head

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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!