High-Flow Intake Bridge Manifold Kit (Raw)

Features:

• 32% larger outlets for increased airflow
• High-flow design improves engine performance
• Durable A356.0-T6 aluminum construction
• Precision cast using steel molds
• Bolt-on intake tube prevents boost leaks
• Integrated O-ring seal for leak prevention
• Improved heat management under load
• Direct bolt-on installation for LLY Duramax
• Includes all required hardware and gaskets
• Replaces restrictive factory bridge manifold
• Designed for 2004.5-2005 6.6L LLY engines
• Built for long-term durability and reliability

Unlock The Airflow Your LLY Has Been Missing From Day One

If you have spent any time pushing your 2004.5-2005 Duramax, you already know the factory bridge manifold is a weak link that holds back performance. The PPE High-Flow Intake Bridge Manifold Kit steps in with a noticeable upgrade that your truck can actually feel the moment you get into the throttle. With 32 percent larger outlets, airflow is no longer restricted, allowing your engine to breathe easier and respond quicker under load. That translates to better throttle response, stronger pulls, and a more confident driving experience whether you are towing or just enjoying the power. Additionally, the bolted intake tube design solves a common frustration with the stock setup by eliminating boost leaks that can rob performance. Everything you need comes in the box, so you are not chasing down extra parts just to get the job done. It is a straightforward upgrade that brings real results without overcomplicating your build. Once installed, it simply feels like your truck is finally operating the way it should have from the factory.

Engineered Airflow And Strength Built For Demanding Duramax Performance

At the core of this kit is a precision-cast bridge manifold made from A356.0-T6 aluminum, a heat-treated alloy known for its strength and durability in high-performance applications. This construction not only holds up under elevated boost pressures but also helps manage heat more effectively than the restrictive factory unit. Furthermore, the larger outlet design works in conjunction with the required lower intake manifold to optimize airflow distribution across the engine. The intake tube is physically bolted to the bridge and sealed with an O-ring, creating a secure connection that prevents boost leaks and maintains consistent pressure. This design improvement addresses a known issue in the OEM configuration where the lack of a solid connection can lead to performance loss over time. Installation is direct and includes all necessary hardware along with upper and lower gaskets, making the process as efficient as possible. The result is a well-balanced upgrade that improves airflow efficiency, sealing integrity, and long-term reliability. It is a smart solution for anyone looking to get more out of their LLY without sacrificing durability.

Fitment: 2004.5, 2005 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LLY

Notes:

• Requires PPE lower intake manifold for installation
• Designed specifically for LLY Duramax engines
• Larger outlets require matching intake components
• Replaces factory bridge manifold and intake tube
• Addresses common factory boost leak issues
• Professional installation recommended for best results
• Raw finish may require additional coating if desired
• Compatible with OEM reference part numbers listed
• Intended for performance and upgraded airflow setups
• Not compatible with stock lower intake manifold

Install Instructions