WCFAB 2001-2004 LB7 Duramax Y-Bridge KitPowdercoat colors can be found here! The only High Flow 3 Complete Y Bridge kit on the market for your LB7 that is compatible with the factory IHI turbo! Also compatible with WCFab S300 or S400 single turbo install kits! Replace the restrictive OEM Y bridge and cold side intercooler pipe with this high flow 3 kit to increase throttle response and turbo spool up by creat" intake tract from the intercooler outlet to the engine. Eliminates the angled OEM