{"product_id":"high-flow-intake-bridge-manifold-kit-2004-5-2005-gm-sierra-silverado-2500hd-3500hd-6-6l-duramax-lly","title":"PPE 115053400 High-Flow Intake Bridge Manifold Kit (Raw) | 2004.5-2005 GM Sierra\/Silverado 2500HD\/3500HD 6.6L Duramax LLY","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e32% larger outlets for increased airflow\u003c\/li\u003e\n\u003cli\u003eHigh-flow design improves engine performance\u003c\/li\u003e\n\u003cli\u003eDurable A356.0-T6 aluminum construction\u003c\/li\u003e\n\u003cli\u003ePrecision cast using steel molds\u003c\/li\u003e\n\u003cli\u003eBolt-on intake tube prevents boost leaks\u003c\/li\u003e\n\u003cli\u003eIntegrated O-ring seal for leak prevention\u003c\/li\u003e\n\u003cli\u003eImproved heat management under load\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on installation for LLY Duramax\u003c\/li\u003e\n\u003cli\u003eIncludes all required hardware and gaskets\u003c\/li\u003e\n\u003cli\u003eReplaces restrictive factory bridge manifold\u003c\/li\u003e\n\u003cli\u003eDesigned for 2004.5-2005 6.6L LLY engines\u003c\/li\u003e\n\u003cli\u003eBuilt for long-term durability and reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eUnlock The Airflow Your LLY Has Been Missing From Day One\u003c\/h4\u003e\n\u003cp\u003eIf 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.\u003c\/p\u003e\n\u003ch4\u003eEngineered Airflow And Strength Built For Demanding Duramax Performance\u003c\/h4\u003e\n\u003cp\u003eAt 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Fitment: \u003c\/strong\u003e 2004.5, 2005 GM Sierra\/Silverado 2500HD\/3500HD 6.6L Duramax LLY\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRequires PPE lower intake manifold for installation\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for LLY Duramax engines\u003c\/li\u003e\n\u003cli\u003eLarger outlets require matching intake components\u003c\/li\u003e\n\u003cli\u003eReplaces factory bridge manifold and intake tube\u003c\/li\u003e\n\u003cli\u003eAddresses common factory boost leak issues\u003c\/li\u003e\n\u003cli\u003eProfessional installation recommended for best results\u003c\/li\u003e\n\u003cli\u003eRaw finish may require additional coating if desired\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM reference part numbers listed\u003c\/li\u003e\n\u003cli\u003eIntended for performance and upgraded airflow setups\u003c\/li\u003e\n\u003cli\u003eNot compatible with stock lower intake manifold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0611\/8539\/2883\/files\/High-Flow-Intake-Bridge-Manifold-Kit_Install-Guide_R1225.pdf?v=1765316723\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eInstall Instructions\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"PPE","offers":[{"title":"Default Title","offer_id":54026438607132,"sku":"PPE115053400","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/2004-5_2005-GM-6-6L-Duramax-LLY-High-Flow-Intake-Bridge-Manifold-Kit_115053400_01.webp?v=1775598622","url":"https:\/\/www.alligatorperformance.com\/products\/high-flow-intake-bridge-manifold-kit-2004-5-2005-gm-sierra-silverado-2500hd-3500hd-6-6l-duramax-lly","provider":"Alligator Performance","version":"1.0","type":"link"}