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SKU: FPE-61-10014-D / UPC: 732777408917
Fleece Performance Freedom Series Cylinder Head (Driver Side) for 2017-2023 GM 6.6L Duramax L5P
Revitalize your 2017-2023 GM 6.6L Duramax L5P with the Fleece Performance Freedom Series Cylinder Head (Driver Side), part number FPE-61-10014-D. Engineered for precision and reliability, this cylinder head is the definitive choice for drivers seeking a high-quality replacement that delivers consistent performance for daily driving or heavy-duty towing. Crafted in Fleece Performance’s state-of-the-art Freedom Racing Engine shop, this cylinder head ensures your GM 2500/3500 operates at peak efficiency, meeting or exceeding factory specifications.
Why Choose the Fleece?
This driver-side cylinder head is meticulously designed to restore power and efficiency to your GM 6.6L Duramax L5P. Each unit undergoes rigorous inspection, pressure testing, and leak testing to guarantee flawless operation. Built for durability, it’s ideal for demanding applications, offering unmatched reliability for your Chevrolet Silverado or GMC Sierra. The Fleece Performance Freedom Series stands out as the go-to solution for those who value quality craftsmanship and long-lasting performance.
What’s Included in Your Purchase?
- Fleece Performance Freedom Series Cylinder Head (Driver Side) SKU: FPE-61-10014-D
- New Valves: Precision-installed for optimal combustion and airflow.
- New Valve Guides: Ensure smooth valve operation and extended durability.
- New Valve Springs: Designed to maintain consistent pressure and performance.
- New Valve Seals: Prevent oil leaks and maintain engine efficiency.
- 11 Screw-In Freeze Plugs: Eliminate coolant leaks under the valve cover for worry-free operation.
- Pre-Inspected and Pressure-Tested: Each head is thoroughly cleaned, decked, painted, and ready for installation.
- Core and Crate Return Instructions: Paperwork included for seamless core return process (core return required, customer responsible for return shipping costs).
- Note: Head gasket not included. Fleece Performance recommends using a new OEM head gasket, such as Cummins 4932210, for proper installation.
Vehicle Fitment
The Fleece Performance Freedom Series Cylinder Head (FPE-61-10014-D) is specifically designed for the following vehicles with a single alternator configuration:
- 2017-2023 Chevrolet Silverado 2500HD/3500HD with 6.6L Duramax L5P
- 2017-2023 GMC Sierra 2500HD/3500HD with 6.6L Duramax L5P
Important Fitment Note: Fitment is based on year, make, and engine type. Customers must verify compatibility with specific model, trim, build date, and factory options. For applications exceeding stock horsepower, Fleece Performance recommends using ARP625 or ARP L19 12mm head studs for enhanced reliability.
Specifications
- Part Number: FPE-61-10014-D
- UPC: 732777408917
- Application: Driver-side cylinder head for GM 6.6L Duramax L5P
- Shipping Dimensions: 23 in. (L) x 15 in. (W) x 12 in. (H)
- Shipping Weight: 45.00 lbs.
- Power Rating: Rated for up to 700 horsepower, ideal for daily drivers and heavy-duty towing.
- Manufacturing: Built in Fleece Performance’s Freedom Racing Engine shop, inspected, pressure-tested, decked, and painted.
- Installation Notes: No machining required; valves are pre-installed. Follow all installation instructions and adjust valve lash to prevent damage. Back off adjusters on rocker arms during installation.
Key Features
- Precision Engineering: Manufactured to meet or exceed OEM standards, ensuring a perfect fit and reliable performance.
- Enhanced Durability: Equipped with hardened, oversized press-in valve seats and new valve guide liners for long-term reliability.
- Leak-Free Design: 11 screw-in freeze plugs prevent coolant leaks, providing peace of mind under the valve cover.
- Ready for Installation: Each head is pre-assembled, cleaned, and tested, saving you time and effort.
- Versatile Performance: Rated for up to 700 horsepower, making it suitable for both stock and moderately modified engines.
Why Fleece Performance?
Fleece Performance is a trusted name in diesel performance, known for its commitment to quality and innovation. The Freedom Series Cylinder Head is crafted with precision in their Indiana-based facility, ensuring every component meets stringent standards. Whether you’re rebuilding a worn engine or upgrading for better performance, this cylinder head delivers the reliability and power your GM Duramax demands.
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Fleece Performance Engineering has grown from a small Indiana operation into one of the most respected names in high-performance diesel upgrades, with a product catalog built specifically around the Duramax and Cummins common rail diesel platforms that dominate the high-horsepower diesel community. Founded by brothers Brayden and Chase Fleece in a rural west-central Indiana pole barn, the company established itself as a technology leader in common rail injection systems within five years, developing the Cheetah turbocharger line and the TurboBrake electronic exhaust brake that have become standard references for what diesel performance engineering can achieve. Fleece operates from an 18,750-square-foot Brownsburg, Indiana facility capable of in-house design, manufacturing, assembly, and testing, placing them among the high-output diesel specialists who supply race teams and serious street performance builds. This collection covers Fleece Performance's full range of Duramax and Cummi...
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