3906660 3910881 3356854 Exhaust Manifold Tube For Cummins 6B 6BT 6BTA 6BT5.9Exhaust 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,