Building a custom Y-bridge for your 2001-2005 Duramax 6.6L has never been easier! DHD's billet aluminum bridge flanges are perfect for custom applications where turbo and intake options are limiting factors. Each flange is precision machined to match the OE intake runner and accept the OE bridge seal. For added flexibility these flanges are designed to offset the bridge based on what works best for your application. This valuable offset can free up room for 5"+ turbocharger air inlet plumbing.