Exhaust Manifold 3904689 for Cummins Engine 6BT 6BTA B5.9M 6B5.9 3901919 Manifold Replacement Exhaust Manifold For Case Backhoes And Dozers With Cummins 4 FridayParts Aftermarket Manifold Do you need a full engine rebuild for a 3.9L Cummins 4BT or simple maintenance for a 4BTA diesel engine, Hawks Parts is your best place to choose New aftermarket parts , Part Number: 3901919 Cummins Diesel Engine » Blog Archive » 3901919 NEW Exhaust Manifold With Gasket For Cummins Diesel Engine Liter B 4bt 05 Ne Application: Replacement for Cummins Engine: ISB6., 7 CM2150 SN,QSB6., 7 CM850,ISBe4 CM2150,G5., 9 CM558,ISB6., 7 CM2150 SQ,ISB4., 5 CM2150 SN,ISB CM550,QSB5., 9 CM850,B Gas International CM556,QSB4., 5-30 CM550,ISBe CM800,ISBe5 CM2150 SN,QSB4., 5 CM850,B5., 9,ISBe CM850