Cylinder Head (Passenger Side)

Features

• Precision ground stock valves with 45° intake & exhaust angles

• Fully pressure tested and leak checked

• Includes new valve guides, springs, and valve seals

• Multi-angle valve job for optimal airflow

• Manufactured in a state-of-the-art performance engine shop

• No core charge required

Duramax Cylinder Head Reliability Reimagined

Revitalize the performance and reliability of your 2006–2010 GM 6.6L Duramax with the Fleece Freedom Series Passenger Side Cylinder Head. Engineered for longevity and performance, this premium replacement cylinder head is crafted at Fleece’s renowned Freedom Racing Engine facility using cutting-edge machining processes. Every unit is built to meet or exceed OEM specifications, ensuring seamless compatibility and peace of mind for your daily driver or towing vehicle.

Designed with stock-style valves and a 45° angle on both the intake and exhaust ports, this cylinder head offers optimized airflow and efficient combustion. Whether you’re replacing a worn factory head or enhancing your Duramax for dependable power, this drop-in upgrade is the smart choice.

Quality That Speaks for Itself

Every Freedom Series cylinder head is:

• Thoroughly inspected for casting flaws and wear

• Pressure and leak tested to ensure integrity under heat and load

• Outfitted with new valve guides, seals, and springs for a long service life

• Finished with a multi-angle valve job for improved sealing and flow dynamics

The result? Enhanced durability, consistent performance, and confidence in your truck’s powertrain.

Fitment

2006–2010 GM Silverado 2500HD / 3500HD & Sierra 2500HD / 3500HD with 6.6L Duramax (Passenger Side Cylinder Head)

Warranty

1-Year Limited Parts Warranty