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2011-2016 LML Duramax Fleece Freedom Series Cylinder Heads

Fleece Performance
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FPE-61-10004-D-CL, FPE-61-10004-P-CL
- 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
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Description

Freedom Series cylinder heads for the 6.6L Duramax are manufactured in Fleece's state-of-the-art Freedom Racing Engine shop and are guaranteed to meet or exceed factory specifications. All heads are meticulously inspected, pressure and leak tested, and are equipped with new valve guides, springs, and valve seals.  Perfect for the daily driver or towing application, these heads utilize stock valves with a 45 degree angle on the intake and exhaust ports. Now available with no core charge!  

INSTALLATION NOTES

  • We recommend using GM 12637788 head gasket (Grade C, Right) and GM 12637785 head gasket (Grade C, Left) - Sold Separately.