Fits select 2003-2007 Ford E-350 Super Duty, E-350 Club Wagon, Excursion, and F-250/F-350 Super Duty models (6.0L / 6.4L).

The Fleece Performance Freedom Series HD Cylinder Head is engineered from the ground up to address the common failure points of factory 6.0L Powerstroke castings. Unlike standard remanufactured heads, these units utilize a proprietary higher tensile strength alloy casting with increased wall thickness in critical areas. This added material ensures superior durability under high-stress conditions and provides a long-lasting solution for your diesel engine.

For maximum combustion sealing, these heads feature a unique single-piece hoop style O-ring, eliminating the seams found in traditional stainless wire setups. The valve train is further enhanced with American-made, extreme-duty tungsten alloy valve seats, offering significantly higher wear resistance and stability compared to OEM components.

• Manufacturer Part Number: FPE-61-10011-HD
• 18mm dowel configuration for precise alignment
• High tensile strength alloy casting with reinforced walls
• Tungsten alloy valve seats for extreme heat and wear resistance
• Exclusive single-piece hoop style O-ring for a superior head gasket seal
• Note: Fleece recommends using 6.4L pushrods (Ford P/N 8C3Z-6565-B) to accommodate tolerance stack-up
• Note: Head gasket not included (Ford P/N KZ3Z-6051-B recommended)

Fits select 2003-2007 Ford F-250/F-350 Super Duty, E-350 Super Duty, and Excursion (6.0L / 6.4L).

The Fleece Performance Freedom Series HD Cylinder Head is engineered to solve the common failure points of factory 6.0L Powerstroke castings. This is a completely new casting designed from the ground up, utilizing a higher tensile strength alloy with increased wall thickness in critical areas to prevent cracking and improve longevity under high cylinder pressures.

Unlike traditional heads that use multi-piece stainless wire O-rings with seams, this Freedom Series head features a unique single-piece hoop-style O-ring. This seamless design ensures a superior combustion seal, making it a critical upgrade for high-performance or heavy-towing applications. The head is finished with American-made tungsten alloy valve seats, providing exceptional wear resistance and stability compared to stock replacement seats.

• Manufacturer Part Number: FPE-61-10012-HD
• 20mm dowel configuration (fits 2-bolt rocker box setups)
• High-tensile strength alloy casting with increased wall thickness
• Tungsten alloy valve seats for extreme durability
• Single-piece hoop-style O-ring for seamless combustion sealing
• Note: Recommended for use with 6.4L pushrods (0.050” shorter) to accommodate tolerance stack ups
• Note: Head gasket (KZ3Z-6051-B) not included

Fits 2006-2010 Chevrolet Duramax trucks (6.6L LBZ/LMM).

Restore the reliability and performance of your heavy-duty diesel engine with this pair of Industrial Injection Stock Remanufactured Cylinder Heads. These heads are professionally overhauled to meet or exceed original equipment standards, providing a dependable solution for 2006-2010 6.6L Duramax LBZ and LMM platforms. Each head undergoes a rigorous remanufacturing process, including deep cleaning, thorough inspection, and precision machining to ensure flat mating surfaces and a superior gasket seal.

• Direct-fit replacement for factory 6.6L LBZ and LMM cylinder heads
• Sold as a complete pair for a total top-end refresh
• Machined to precise tolerances for optimal compression and cooling
• Pressure tested to ensure structural integrity and leak-free performance
• Manufacturer Part Number: PDM-LBZ/LMMSH

Fits 2007-2010 Dodge Ram 2500 and 3500 (6.7L).

The Industrial Injection Stock Cylinder Head (PDM-67STKH) is a precision-engineered replacement designed to restore the performance and reliability of your 6.7L Cummins diesel engine. This head is built to meet original equipment specifications, providing a direct-fit solution for trucks experiencing head gasket failures or cracked factory castings.

This component ensures proper combustion chamber sealing and optimal airflow, maintaining the efficiency your Dodge Ram requires for heavy-duty towing and daily driving. Each unit is inspected to ensure it meets strict tolerances before shipment.

• Direct replacement for factory 6.7L Cummins cylinder heads
• Restores original engine compression and performance
• Engineered for durability under high thermal loads
• Compatible with factory mounting hardware and gaskets
• Manufacturer Part Number: PDM-67STKH

Fits 2003-2007 Dodge Ram 2500 and 3500 (5.9L).

Restore the reliability and sealing performance of your Cummins diesel engine with the Industrial Injection Stock Cylinder Head. This component is engineered as a direct replacement for the factory unit, providing a solution for heads that have suffered from heat-related warping, cracking, or high-mileage wear. Precision-machined to ensure flat mating surfaces and correct valvetrain geometry, this head maintains the original equipment specifications required for dependable daily operation and heavy-duty towing.

• Direct-fit replacement for stock 5.9L 24V Common Rail Cummins heads
• Precision-machined surfaces to ensure optimal head gasket retention
• Engineered to meet or exceed original equipment manufacturer standards
• Compatible with factory valvetrain components and mounting hardware
• Manufacturer Part Number: PDM-59CRSTKH

Fits 2007-2018 Dodge and Ram 2500 and 3500 trucks (6.7L Cummins).

The Fleece Performance Freedom Series Street HD cylinder head is engineered to solve common factory failures while supporting increased power levels up to 700hp. Each head is remanufactured in-house at a state-of-the-art facility where it undergoes rigorous inspection, pressure testing, and precision decking. A critical reliability upgrade includes 11 screw-in freeze plugs, which eliminate the risk of coolant leaks under the valve cover—a common failure point with press-in OE plugs.

• Manufacturer Part Number: FPE-61-10007-HD
• Power Rating: Rated for use up to 700hp
• Valve Springs: Fleece heavy duty 105# valve springs
• Retainers: Fleece tool steel retainers
• Valvetrain: Hardened, oversized press-in valve seats and new valve guide liners
• Freeze Plugs: 11 screw-in plugs (eliminates coolant leaks)

This cylinder head arrives painted and ready for installation. Note that a head gasket is not included; the use of Mahle 54774 or Cummins 4932210 is recommended. Installation by an experienced technician is required as valve lash must be set, and adjusters on rocker arms must be backed off during assembly to prevent cylinder head damage. Core and crate return is required.

Fits select 2007-2018 Dodge Ram and Ram 2500/3500 (6.7L).

The Fleece Performance Freedom Series Street cylinder head (FPE-61-10007) is a comprehensive solution for 6.7L Cummins owners seeking reliability for daily driving and heavy-duty towing. Each head is precision-remanufactured in a state-of-the-art facility to meet or exceed factory specifications. This Street series head is rated for applications up to 700hp; if your build exceeds factory RPM limits, the Performance Series with higher valve spring rates is recommended.

A primary failure point in OE heads is the press-in freeze plugs under the valve cover. Fleece addresses this by installing 11 screw-in freeze plugs to eliminate internal coolant leaks. Every head is thoroughly inspected, pressure checked, decked, and painted prior to shipping.

• 11 screw-in freeze plugs to prevent internal coolant leaks
• Hardened, oversized press-in valve seats
• New Cummins valve springs and valve guide liners
• Fully inspected, pressure tested, and surfaced
• Manufacturer Part Number: FPE-61-10007

Note: Proper installation is critical. Valve lash adjustment is required during installation—back off adjusters on rocker arms to prevent head damage. For high-horsepower applications, ARP625 or ARP L19 12mm head studs are recommended. This unit requires the use of Cummins head gasket 4932210 (not included). Core and crate return is required.

Fits 2011-2016 Chevrolet Silverado and GMC Sierra 2500 HD/3500 HD (6.6L Duramax LML).

Restore the reliability and performance of your LML Duramax with the Fleece Performance Freedom Series remanufactured passenger-side cylinder head. Each head is processed in-house at the state-of-the-art Freedom Racing Engine shop, where it undergoes a rigorous inspection and renewal process that meets or exceeds factory OE specifications. Designed for daily drivers and heavy-duty towing applications, these heads provide a dependable solution with the added convenience of no core charge.

Every cylinder head is meticulously cleaned, pressure tested, and leak tested to ensure casting integrity. The valvetrain is completely refreshed with new valve guides, valve springs, and valve seals. The stock valves feature a precision-ground 45-degree angle on both intake and exhaust ports, paired with a multi-angle valve job for optimal sealing and flow.

• Manufacturer Part Number: FPE-61-10004-P
• Direct replacement for the passenger side (RH) cylinder head
• Includes new valve guides, springs, and seals
• Precision-ground stock valves with 45-degree angles
• Comprehensive multi-angle valve job
• Fully pressure and leak tested
• 1-Year Limited Parts Warranty
• No core charge required

Fits 2011-2016 Chevrolet Silverado 2500/3500 HD and GMC Sierra 2500/3500 HD (6.6L LML Duramax).

Built by the specialists at the Freedom Racing Engine shop, the Fleece Performance Freedom Series remanufactured cylinder head provides a reliable, high-integrity solution for your LML Duramax. Whether you are maintaining a daily driver or a dedicated towing rig, these heads are meticulously inspected and assembled to meet or exceed factory specifications. This driver-side head features precision-ground stock valves and a professional multi-angle valve job to ensure a perfect seal and optimal airflow for your diesel engine.

Each head is pressure and leak tested before leaving the shop to guarantee reliability. They come fully equipped with new valve guides, springs, and seals, simplifying the installation process. By utilizing a 45-degree angle on the intake and exhaust ports, these heads maintain factory-style performance while benefiting from expert machining and fresh components. Best of all, these heads are available with no core charge, streamlining your repair and reducing downtime.

• Manufacturer Part Number: FPE-61-10004-D
• Engine Compatibility: 6.6L LML Duramax
• Driver-side cylinder head assembly
• New valve guides, valve springs, and valve seals installed
• Precision-ground stock valves with 45-degree seat angles
• Comprehensive multi-angle valve job performed
• Fully pressure and leak tested for maximum reliability
• No core charge required
• 1-Year Limited Parts Warranty

Fits select 2006-2010 Chevrolet Silverado and GMC Sierra 2500 HD/3500 HD and Classic models (6.6L Duramax LBZ/LMM).

Restore the reliability and performance of your Duramax with the Fleece Performance Freedom Series remanufactured passenger side cylinder head. Built in the state-of-the-art Freedom Racing Engine shop, each head is engineered to meet or exceed factory specifications, making it an ideal choice for daily driving and heavy-duty towing applications. Every unit undergoes a rigorous inspection process, including thorough pressure and leak testing, to ensure structural integrity and a perfect seal.

This cylinder head comes fully assembled with new valve guides, valve springs, and valve seals. The stock valves are precision ground with a 45-degree angle on both intake and exhaust ports, paired with a professional multi-angle valve job for optimal flow and seating. These heads are available with no core charge, streamlining your engine build or repair.

• Manufacturer Part Number: FPE-61-10003-P
• Component: Passenger side cylinder head
• Valvetrain: New valve guides, springs, and seals included
• Valve Specs: Precision ground stock valves with 45-degree angles
• Machining: Multi-angle valve job
• Testing: Fully pressure and leak tested
• Warranty: 1-Year Limited Parts Warranty

Fits select 2006-2010 Chevrolet Silverado and GMC Sierra 2500 HD and 3500 HD trucks (6.6L Duramax LBZ/LMM).

Restore the reliability and performance of your 6.6L Duramax with the Fleece Performance Freedom Series remanufactured cylinder head. Built specifically for the driver side, this head is manufactured in the state-of-the-art Freedom Racing Engine shop to meet or exceed original equipment specifications. Each unit undergoes a rigorous inspection process, including pressure and leak testing, ensuring a dependable seal for daily driving or heavy-duty towing applications.

This cylinder head features precision-ground stock valves set at a 45-degree angle on both intake and exhaust ports, supported by a professional multi-angle valve job. By using new valve guides, springs, and seals, Fleece ensures this head is ready for immediate installation and long-term service. Best of all, this unit is available with no core charge, simplifying your repair or upgrade project.

• Manufacturer Part Number: FPE-61-10003-D
• Precision ground stock valves with 45-degree angle
• New valve guides, valve springs, and valve seals
• Meticulously pressure and leak tested
• Professional multi-angle valve job
• No core charge required
• Includes 1-Year Limited Parts Warranty

Fits select 2004-2005 Chevrolet Silverado and GMC Sierra 2500 HD/3500 models equipped with the 6.6L Duramax LLY engine.

The Fleece Performance Freedom Series cylinder head provides a reliable, professional-grade solution for the 6.6L LLY Duramax. Produced in the state-of-the-art Freedom Racing Engine shop, each passenger-side head is meticulously remanufactured to meet or exceed original equipment specifications. This head is an ideal choice for daily drivers and towing applications, offering a direct-fit replacement that eliminates the uncertainty of local machine shop lead times and core returns.

Every unit undergoes rigorous pressure and leak testing to ensure casting integrity. To guarantee long-term durability and performance, these heads are outfitted with new valve guides, high-quality valve springs, and premium valve seals. The intake and exhaust ports feature a precision multi-angle valve job with stock valves ground to a 45-degree angle for optimal sealing and flow.

• Manufacturer Part Number: FPE-61-10002-P
• Side: Passenger (Right)
• Components: New valve guides, springs, and seals included
• Testing: Fully pressure and leak tested
• Valve Configuration: Precision ground stock valves with 45-degree angle
• No Core Charge: Available for purchase with no core return required
• Warranty: 1-Year Limited Parts Warranty

Fits select 2004-2005 Chevrolet Silverado and GMC Sierra 2500 HD/3500 models (6.6L LLY Duramax).

This Fleece Performance Freedom Series remanufactured cylinder head is built for reliability in daily driving and towing applications. Produced at the Freedom Racing Engine shop, each head is meticulously inspected and tested to ensure it meets or exceeds factory specifications. This driver-side head is delivered ready for installation with no core charge required.

Every Freedom Series head undergoes a multi-angle valve job and is fully pressure and leak tested to ensure long-term durability. The assembly features precision-ground stock valves with a 45-degree angle on both intake and exhaust ports, ensuring a proper seal and optimal flow for your LLY Duramax engine.

• Manufacturer Part Number: FPE-61-10002-D
• New valve guides, valve springs, and valve seals
• Precision-ground stock valves (45-degree angle)
• Multi-angle valve job for improved sealing
• Thoroughly pressure and leak tested
• 1-Year Limited Parts Warranty
• No core charge required

Fits select 2001-2004 Chevrolet Silverado and GMC Sierra 2500 HD/3500 (6.6L LB7 Duramax).

The Fleece Performance Freedom Series cylinder head for the LB7 6.6L Duramax solves one of the engine's most common maintenance headaches: leaking injector cups. This cylinder head features a cupless injector bore design, completely eliminating the need for injector cups. This design choice prevents future coolant leaks into the fuel system or cylinders, saving you time and money during both installation and long-term operation.

Each head is assembled from a brand-new aluminum casting in the Freedom Racing Engine shop. They are meticulously inspected and equipped with all-new components, including valves, guides, and seals. Every head undergoes a CNC-cut, multi-angle valve job and precision grinding to ensure a perfect 45-degree valve angle for optimal sealing. Before shipping, each unit is pressure and leak tested to guarantee it meets or exceeds factory specifications for daily driving or heavy towing.

• Manufacturer Part Number: FPE-61-10001-P-CL
• Cupless injector bore design eliminates factory injector cups and associated leaks
• New aluminum casting with precision CNC-cut, multi-angle valve job
• Equipped with new valves, valve guides, springs, and valve seals
• Precision ground valves with a 45-degree angle
• Fully pressure and leak tested for reliability
• Recommended Head Gasket: GM 12637788 (Grade C, Right/Passenger Side)

Fits select 2001-2004 Chevrolet Silverado 2500 HD/3500 and GMC Sierra 2500 HD/3500 (6.6L LB7).

The Fleece Performance Freedom Series Driver Side Cylinder Head solves the most common failure point on the LB7 Duramax: leaking injector cups. By utilizing an integrated cupless injector bore design, this cylinder head eliminates the need for injector cups entirely, saving installation time and preventing future coolant-to-fuel contamination or leaks. It is an ideal solution for daily drivers and heavy-duty towing applications.

Assembled at the Freedom Racing Engine shop, each head begins with a brand-new aluminum casting. Every unit is meticulously inspected and undergoes rigorous pressure and leak testing to ensure it meets or exceeds factory specifications. The head comes fully equipped with new valves, guides, springs, and seals, featuring precision ground 45-degree valves and a CNC-cut multi-angle valve job.

• Manufacturer Part Number: FPE-61-10001-D-CL
• Configuration: Driver Side (Left)
• Bore Design: Integrated cupless injector bore
• Valvetrain: New valves, valve guides, springs, and seals
• Machining: Precision ground valves (45-degree) and CNC-cut, multi-angle valve job
• Material: New aluminum casting
• Testing: Fully pressure and leak tested

Installation Note: Fleece Performance recommends using GM 12637785 (Grade C, Left) head gasket for proper installation.