Cylinder Head (Driver Side)

Features

• New valve guides, springs, and valve seals pre-installed

• Precision-ground stock valves with a 45° intake and exhaust angle

• Multi-angle valve job enhances flow and sealing

• Pressure and leak tested to ensure durability

• Built to meet or exceed OEM specifications

• Manufactured in the Freedom Racing Engine facility

• No core charge required

Premium Driver-Side Cylinder Head for Your 6.6L Duramax

Restore the performance and reliability of your 2006–2010 GM Duramax with the Fleece Performance Freedom Series Driver-Side Cylinder Head. Designed for daily drivers, towing rigs, and workhorses, this direct-replacement cylinder head is machined and assembled with precision in Fleece's world-class Freedom Racing Engine shop.

Each cylinder head undergoes comprehensive quality control—including detailed inspection and pressure/leak testing—to ensure you're getting a component that's ready to handle high heat, stress, and real-world load conditions. Whether you're replacing a failed stock head or proactively upgrading, this Freedom Series model ensures stock-like fitment and enhanced longevity.

Uncompromising Craftsmanship

Fleece’s commitment to quality is reflected in every cylinder head:

• New guides, springs, and seals for maximum service life

• Precision ground OEM-style valves deliver consistent seating and airflow

• 45° valve angles replicate stock geometry for compatibility

• Multi-angle valve job supports smooth airflow and improved combustion

• No need to send back a core—keep your original head as a spare

Fitment

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

Warranty

1-Year Limited Parts Warranty