Cummins ISX Exhaust Manifold Kit *Please Verify Your OEM Number Before Purchase Cummins Exhaust Manifold Kit Fits Cummins ISX Engines Includes: (1) Front Exhaust Manifold 3682491 (1) Rear Exhaust Manifold 3683870 (1) Center Exhaust Manifold 3682959 (1) Exhaust Gasket 3682940 (1) Mounting Gasket 3102... See More