Product Description
FLEECE FPE-61-10005-HD 5.9L FREEDOM SERIES CUMMINS CYLINDER HEAD (STREET HD)
The FLEECE FPE-61-10005-HD 5.9L Freedom Series Cummins Cylinder Head (Street HD) is the ultimate bolt-on replacement for any 2003–2007 Dodge Ram 2500/3500 still running a 5.9L Cummins. Engineered for real-world power, towing, daily driving, and long-haul reliability, this Street Heavy Duty version is built with stronger valvetrain components, a brand-new casting, improved cooling passages, and precision machining performed in Fleece Performance Engineering’s Freedom Racing Engine facility.
Whether your factory head cracked, lifted, dropped valve seats, or is simply worn out after years of hard work, the Street HD unit provides a major durability upgrade with no core charge—just bolt it on and enjoy stronger performance and peace of mind.
Key Features
- Brand-new casting – not a reman core, not welded, fully new aluminum-free design.
- Heavy-Duty valvetrain – upgraded springs and components for towing, bigger injectors, and mild performance.
- Fully assembled – ready to install right out of the box.
- Pressure & leak tested in a dedicated engine facility.
- Improved cooling passage design adds durability under heavy load.
- New valve guides, seals, and HD valve springs installed.
- No core charge – keep or scrap your old head.
- Ideal for towing, work trucks, hotshot rigs, and daily drivers.
Fitment
Engine: 5.9L 24-valve Cummins (Common Rail)
Model Years: 2003, 2004, 2004.5, 2005, 2006, 2007
- 2003–2007 Dodge Ram 2500 5.9L Cummins
- 2003–2007 Dodge Ram 3500 5.9L Cummins
Recommended Fleece Cross-Reference Items (CPP Diesel)
- FLEECE FPE-61-10005 5.9L FREEDOM SERIES CUMMINS CYLINDER HEAD (STREET)
- FLEECE FPE-61-10005-RACE 5.9L FREEDOM SERIES CUMMINS CYLINDER HEAD (RACE)
- FLEECE FPE-61-10006 6.7L FREEDOM SERIES CUMMINS CYLINDER HEAD (STREET)
Why Choose Fleece Freedom Series?
Fleece Freedom Series heads are known for precision machining, real diesel engineering, and long-term durability. These 5.9L castings solve common OEM issues—seat failures, cracking, and warped surfaces—while offering improved strength where 5.9L owners need it most. Every head is built in a climate-controlled, ISO-certified facility and is assembled using brand-new premium components.
Installation Notes
- Requires new head gasket and head bolts or studs.
- Always check block deck flatness before installation.
- Compatible with stock injectors, upgraded injectors, and mild turbo upgrades.
- Recommended torque procedure: follow OEM Cummins tightening sequence.
Specifications for FLEECE FPE-61-10005-HD
| Attribute | Value |
|---|---|
| Brand | Fleece Performance Engineering |
| Part Number | FPE-61-10005-HD |
| Engine Compatibility | 5.9L Cummins (2003–2007) |
| Valvetrain | Heavy-Duty springs, new seals and guides |
| UPC | 670875716568 |
| GTIN | 670875716568 |
| Casting | Brand-new casting, CNC machined |
| Testing | Pressure & leak tested |
| Core Charge | None |
| Shipping Weight | Approx. 65 lb |
| Shipping Dimensions | 24 × 15 × 12 (typical cylinder head packaging) |
| Cross Reference | Replaces OEM Cummins 5.9L cylinder head (’03–’07 CR) |
| E-Codes | Not applicable |
| Prop 65 Warning | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
FAQ
Is this a new casting or a remanufactured head?
The FPE-61-10005-HD uses a brand-new casting. It is not a reman core. All machining, assembly, and testing is completed in Fleece’s Freedom Racing Engine facility.
What makes the Street HD version different from the standard Street model?
The HD version includes heavier-duty valve springs and upgraded valvetrain components, making it better suited for towing, larger injectors, mild turbo upgrades, and higher cylinder pressures.
Do I need custom tuning after installing this head?
A stock truck does not require tuning. Engines running larger injectors, bigger turbos, or aggressive fueling will benefit from proper calibration.
Does this head require a core return?
No. Fleece sells this Freedom Series head with zero core charge.
Is this compatible with ARP head studs?
Yes. This head is fully compatible with OEM bolts or ARP head studs. Studs are strongly recommended for towing and performance applications.
