Product Description
FLEECE FPE-61-10003-P 2006-2010 FACTORY LBZ/LMM DURAMAX CYLINDER HEAD (PASSENGER SIDE)
Restore the power and reliability of your 2006-2010 6.6L LBZ/LMM Duramax with the FLEECE FPE-61-10003-P Factory LBZ/LMM Duramax Cylinder Head (Passenger Side). This Freedom Series head starts with a remanufactured OE casting that is meticulously cleaned, inspected, decked, and pressure & leak tested in Fleece’s state-of-the-art Freedom Racing Engine shop. Equipped with new valve guides, valve springs, valve seals, and injector cups, it’s a ready-to-bolt-on solution for hard-working Duramax trucks.
Whether you tow heavy, daily drive, or just need a rock-solid replacement for a cracked or worn factory head, this passenger-side LBZ/LMM cylinder head is built to meet or exceed OEM specifications while giving your engine the airflow, sealing, and durability it needs for the long haul.
Key Features
- Remanufactured OE casting built in the Freedom Racing Engine facility
- Designed specifically for 2006-2010 6.6L LBZ/LMM Duramax (passenger side)
- New valve guides, valve springs, and valve seals for long-term reliability
- Includes new injector cups for a complete, leak-free installation
- Precision ground stock-style valves with a 45-degree seat
- Multi-angle valve job for improved sealing and airflow
- Thoroughly cleaned, decked, and pressure & leak tested
- No core charge – keep your original head if desired
- Backed by a 1 Year Limited Parts Warranty
Fitment
Engine: 6.6L Duramax LBZ/LMM
Years: 2006, 2007, 2008, 2009, 2010
Position: Passenger Side (Right)
- 2006-2007 Chevrolet Silverado 2500HD / 3500HD 6.6L LBZ Duramax
- 2007.5-2010 Chevrolet Silverado 2500HD / 3500HD 6.6L LMM Duramax
- 2006-2007 GMC Sierra 2500HD / 3500HD 6.6L LBZ Duramax
- 2007.5-2010 GMC Sierra 2500HD / 3500HD 6.6L LMM Duramax
Note: This listing is for one passenger-side cylinder head. For a complete pair, add the matching driver-side head below.
OE Interchange / Cross Reference (Passenger Side LBZ/LMM)
This Fleece cylinder head is designed as a direct replacement for factory LBZ/LMM passenger-side heads, compatible with OEM hardware, gaskets, and manifolds when installed correctly.
Recommended Fleece Cross-Reference / Related Products (CPP Diesel)
- Matching driver-side head for 2006-2010 LBZ/LMM: FLEECE FPE-61-10003-D 2006-2010 FACTORY LBZ/LMM DURAMAX CYLINDER HEAD (DRIVER SIDE)
- LLY passenger-side head (2004.5-2005): FLEECE FPE-61-10002-P 2004.5-2005 FACTORY LLY DURAMAX CYLINDER HEAD (PASSENGER SIDE)
- LLY driver-side head (2004.5-2005): FLEECE FPE-61-10002-D 2004.5-2005 FACTORY LLY DURAMAX CYLINDER HEAD (DRIVER SIDE)
- LB7 passenger-side cupless head (2001-2004): FLEECE FPE-61-10001-P-CL FREEDOM SERIES DURAMAX CYLINDER HEAD WITH CUPLESS INJECTOR BORE FOR 2001-2004 LB7 (PASSENGER SIDE)
- L5P driver-side head (2017-2023): FLEECE FPE-61-10014-D FREEDOM SERIES DURAMAX CYLINDER HEAD FOR 17-23 L5P (DRIVER SIDE)
- L5P passenger-side head (2017-2023): FLEECE FPE-61-10014-P FREEDOM SERIES DURAMAX CYLINDER HEAD FOR 17-23 L5P (PASSENGER SIDE)
Why Choose Fleece Freedom Series for Your LBZ/LMM?
Freedom Series cylinder heads are engineered for real-world Duramax use: towing, hauling, and daily driving. Each head is remanufactured from an OE casting, then carefully cleaned, inspected, pressure & leak tested, and finished with a multi-angle valve job for optimal sealing and performance. With new valvetrain components and injector cups installed, you get a top-end solution that helps prevent future coolant and compression issues.
Installation Notes
- Use new head bolts or head studs and follow OEM torque sequence and specs.
- Pair with quality LBZ/LMM-specific head gaskets (Grade C is commonly recommended for performance/towing).
- Verify block deck flatness and cleanliness before installation.
- Professional installation is strongly recommended on common-rail Duramax engines.
Specifications for FLEECE FPE-61-10003-P
| Attribute | Value |
|---|---|
| Brand | Fleece Performance Engineering |
| Part Number | FPE-61-10003-P |
| Engine | 6.6L Duramax LBZ/LMM (2006-2010) |
| Position | Passenger Side (Right) |
| UPC | 670875716636 |
| GTIN | 670875716636 |
| Series | Freedom Series Duramax Cylinder Head |
| Casting | Remanufactured OE casting, cleaned, inspected, decked |
| Valvetrain | New valve guides, valve springs, and valve seals; stock-style valves with 45° seats; multi-angle valve job |
| Injector Cups | New injector cups installed |
| Testing | Pressure & leak tested prior to shipment |
| Core Charge | No core charge required |
| Shipping Weight | Approx. 45 lb |
| Shipping Dimensions (W x H x L) | 15.00 in x 12.00 in x 23.00 in |
| Shipping Method | Ground – typically qualifies for free shipping from CPP Diesel |
| Cross Reference | FPE-61-10003-D (LBZ/LMM driver side), FPE-61-10002-D/P (LLY heads), FPE-61-10001-D-CL/P-CL (LB7 cupless heads), FPE-61-10014-D/P (L5P heads) |
| E-Codes | Not applicable |
| Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
| Warranty | 1 Year Limited Parts Warranty |
FAQ
Is this FPE-61-10003-P cylinder head a direct replacement for my stock LBZ/LMM passenger head?
Yes. This Freedom Series cylinder head is designed as a direct-fit replacement for the factory 2006-2010 LBZ/LMM 6.6L Duramax passenger-side head. It is compatible with OEM-style gaskets, manifolds, injectors, and hardware when installed correctly.
Does this head come with injector cups installed?
Yes. The FPE-61-10003-P head includes new injector cups already installed, which helps prevent coolant and compression leaks and saves time during assembly.
Do I have to pay a core charge or send my old head back?
No. This cylinder head is sold with no core charge, so you do not need to return your original cylinder head. That saves you both freight cost and turn-around time.
Should I replace both cylinder heads on my LBZ/LMM at the same time?
It is not strictly required, but many Duramax owners replace both cylinder heads together on higher-mileage trucks or after a head gasket failure. Pairing this passenger-side head with the matching driver-side FLEECE FPE-61-10003-D ensures a matched set with fresh components and consistent machining on both banks.
What other parts should I replace when installing this cylinder head?
At a minimum, plan on new head gaskets, new head bolts or head studs, intake and exhaust manifold gaskets, and fresh coolant. It is also a good time to inspect injectors, glow plugs, pushrods, and rocker arms so you do not have to reopen the top end later.
Can this head support towing and mild performance upgrades?
Yes. This Fleece Freedom Series head is ideal for stock or mildly modified LBZ/LMM trucks that tow or work hard. It is engineered to handle everyday use plus typical bolt-on upgrades such as tuning, intake, exhaust, and mild turbo improvements when paired with proper tuning.
