2004.5 – 2005 GM 6.6L Duramax LLY High-Flow Intake Bridge Manifold Kit - Black - Pacific Performance Engineering - 115053420

Features
High-strength, durable A356.0-T6 aluminum alloy
Precision cast using permanent steel molds
32% larger outlets for higher flow
Intake manifold tube is bolted to the bridge manifold to prevents boost leaks
Direct bolt-on installation
Hardware and gaskets included
High-Flow Intake Bridge Manifold Kit
Upgrade the notoriously undersized stock bridge manifold in your LLY to the bigger and better PPE bridge manifold. Cast from A356.0-T6 heat-treated aluminum alloy, this bridge manifold delivers durability, increased airflow, and improved heat management.
Boost leak is another common issue on the stock bridge manifold/tube, because of the lack of physical connection between the two components. The PPE intake manifold tube is securely bolted to the bridge manifold and sealed with an O-ring to prevent boost leaks.
Kit includes all necessary hardware, upper and lower manifold gaskets. 
Note:  PPE  Lower Intake Manifold Kit  SKU  115051500  is required for the installation of this kit because of the larger bridge manifold outlets.