3910992 Outlet Connection Exhaust Manifold Tube For Cummins 4BT 6BTExhaust Manifold Tube Feature: 1.Ideal Replacement The exhaust manifold exhausts the exhaust gases produced when running into the atmosphere while reducing noise. Timely inspection and replacement of a new manifold can greatly improve your driving comfort. This is a perfect replacement that has the same quality as the original unit. 2.High quality and special Built to strict OEM quality standards, the exhaust manifold is made of high quality iron,