2004.5-2005 LLY Engine

Pacific Performance Engineering

2004.5-2005 GM 6.6L DURAMAX HIGH-FLOW EXHAUST MANIFOLD AND UP-PIPE KIT

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)