{"product_id":"ppe-115053420-bridge-manifold-2pc-adapts-2004-5-2005-gm-6-6l-duramax-lly-egr-intake-to-lbz-runners-black","title":"PPE 115053420 Bridge Manifold EGR\/Intake to LBZ Runners (Black) | 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\u003eHigh-strength A356.0-T6 aluminum construction\u003c\/li\u003e\n\u003cli\u003ePrecision cast for consistent durability\u003c\/li\u003e\n\u003cli\u003e32% larger outlets improve airflow\u003c\/li\u003e\n\u003cli\u003eIncreases intake efficiency and performance\u003c\/li\u003e\n\u003cli\u003eImproved heat management under load\u003c\/li\u003e\n\u003cli\u003eBolt-on intake tube prevents boost leaks\u003c\/li\u003e\n\u003cli\u003eIntegrated O-ring seal enhances reliability\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on installation design\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 6.6L Duramax LLY engines\u003c\/li\u003e\n\u003cli\u003eOEM-compatible fit and connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eUnlock The Airflow Your Duramax Has Been Missing All Along\u003c\/h4\u003e\n\u003cp\u003eIf you have spent any time around LLY Duramax trucks, you already know the factory bridge manifold leaves a lot on the table. This PPE high-flow intake bridge steps in with a noticeable upgrade that brings your engine to life the moment you get on the throttle. The larger 32 percent outlet design allows more air to move freely, which helps your truck breathe easier under load and respond quicker when you need power. Additionally, the solid A356.0-T6 aluminum construction gives you confidence that this is not just a performance upgrade but a long-term solution. One of the most frustrating issues with the stock setup is boost leaks, and PPE addresses that directly by bolting the intake tube to the manifold and sealing it with an O-ring. That added connection makes a real difference when you are towing, daily driving, or pushing your truck harder than stock. Installation stays straightforward, so you can get back on the road without a drawn-out project. It is the kind of upgrade that feels right at home whether your truck works for a living or just needs to perform like it should have from the start.\u003c\/p\u003e\n\u003ch4\u003eEngineered Airflow And Strength Come Together For Reliable Performance Gains\u003c\/h4\u003e\n\u003cp\u003eTaking a closer look at the design, this bridge manifold is built with precision casting using permanent steel molds to ensure consistent strength and fitment. The A356.0-T6 heat-treated aluminum alloy is known for its durability and resistance to heat, which helps maintain performance even during demanding driving conditions. Furthermore, the increased outlet size improves volumetric efficiency by allowing a greater volume of air into the intake runners, supporting better combustion and overall engine performance. The integrated design that bolts the intake tube directly to the manifold eliminates a common weak point found in the factory setup. This mechanical connection, paired with a proper O-ring seal, significantly reduces the chance of boost leaks that can rob power and efficiency. The kit also includes all necessary hardware along with upper and lower gaskets, which simplifies the installation process and ensures a proper seal from the start. It is important to note that the larger outlet design requires a compatible lower intake manifold, which allows the system to perform as intended. Altogether, this setup delivers a well-balanced combination of airflow improvement, structural integrity, and dependable sealing for the 2004.5-2005 GM 6.6L Duramax LLY platform.\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\u003eNot compatible with stock lower intake manifold\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for LLY Duramax engines\u003c\/li\u003e\n\u003cli\u003eFits 2004.5-2005 GM 2500HD and 3500HD models\u003c\/li\u003e\n\u003cli\u003eLarger outlets require supporting airflow upgrades\u003c\/li\u003e\n\u003cli\u003eProfessional installation recommended for best results\u003c\/li\u003e\n\u003cli\u003eEnsure proper torque on all mounting hardware\u003c\/li\u003e\n\u003cli\u003eCheck boost connections during installation\u003c\/li\u003e\n\u003cli\u003eIntended to replace restrictive factory bridge manifold\u003c\/li\u003e\n\u003cli\u003eVerify part numbers before purchase\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":53990456852764,"sku":"PPE115053420","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_115053420_01.webp?v=1773935286","url":"https:\/\/www.alligatorperformance.com\/products\/ppe-115053420-bridge-manifold-2pc-adapts-2004-5-2005-gm-6-6l-duramax-lly-egr-intake-to-lbz-runners-black","provider":"Alligator Performance","version":"1.0","type":"link"}