Fleece Freedom Series Cylinder Head – Passenger Side (FPE-61-10003-P) for 2006-2010 Duramax LBZ / LMM

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The Fleece Freedom Series Cylinder Head – Passenger Side (FPE-61-10003-P) is a high-quality replacement for 2006–2010 GM Duramax LBZ and LMM diesel engines. Designed for durability and performance, it enhances airflow and cooling, making it suitable for both stock and high-performance setups. Built to exceed OEM standards, it ensures a reliable seal and efficient combustion, making it ideal for engine rebuilds or heavy-duty upgrades.

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Description

The Fleece Freedom Series Cylinder Head – Passenger Side (FPE-61-10003-P) is a premium replacement component designed specifically for 2006-2010 GM Duramax LBZ and LMM diesel engines. Engineered for durability and performance, this high-quality cylinder head offers improved airflow and cooling efficiency, making it ideal for both stock and high-performance applications. Manufactured with precision and built to meet or exceed OEM specifications, the Fleece Freedom Series head ensures a reliable seal and optimal combustion. Whether you’re rebuilding your engine or upgrading for added reliability under heavy loads, this passenger-side cylinder head delivers the strength and dependability demanded by diesel enthusiasts and professionals alike.

Additional information
Weight 45 lbs
Dimensions 23 × 15 × 12 in
Fitment

Fitment

  • 2006 GM Silverado/Sierra 2500/3500 6.6L LLY/LBZ Duramax
  • 2007 GM Silverado/Sierra 2500/3500 6.6L LLY/LBZ Duramax (classic body style)
  • 2007.5 GM Silverado/Sierra 2500/3500 6.6L LMM Duramax (new body style)
  • 2008 GM Silverado/Sierra 2500/3500 6.6L LMM Duramax
  • 2009 GM Silverado/Sierra 2500/3500 6.6L LMM Duramax
  • 2010 GM Silverado/Sierra 2500/3500 6.6L LMM Duramax
Features

Features

  • New casting
  • New valve guides, new springs, and new valve seals
  • Pressure and leak tested
  • Precision ground stock valves with a 45 degree angle
  • Multi-angle valve job
Installation

Installation

Installation Instructions

Installation Video

Installation Notes

  • We recommend using GM 12637788 head gasket (Grade C, Right) and GM 12637785 head gasket (Grade C, Left)
About brand
Fleece Performance Engineering is a diesel performance manufacturer focused on reliability and precision engineering. The company designs parts that solve common diesel issues while supporting added power. Fleece products support daily driving, towing, and performance diesel trucks. Fleece engineers fuel system components, turbochargers, electronics, and emissions-compliant upgrades in house. Their parts improve efficiency, drivability, and long-term engine protection. Each product is tested for proper fit and consistent performance. Diesel owners trust Fleece for dependable upgrades. Whether maintaining a work truck or building for performance, Fleece delivers proven solutions designed for real-world use.
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