2004.5-2005 LLY Engine

Fleece Performance Engineering

Freedom Series Duramax Cylinder Head for 2004.5-2005 LLY (Driver Side)

Fleece Performance Engineering

Freedom Series Duramax Cylinder Head for 2004.5-2005 LLY (Passenger Side)

Fleece Performance Engineering

Fleece Performance Billet Oil Cap for 2001-2016 Duramax - Black

Fleece Performance Engineering

Duramax Oil Cooler Adapter

Fleece Performance Engineering

6.6L Duramax Billet Coolant Block Off Plate (2001-2023)