2313462 Manifold-Exh Fits Caterpillar ModelsOne New Aftermarket Replacement Exhaust Manifold (Center Section) for Caterpillar (Cat) C15 C15 Acert 3406E Engines This aftermarket exhaust manifold is the center section of the three piece exhaust manifold assembly used on Caterpillar C15, C15 Acert, and 3406E diesel engines. The exhaust manifold collects combustion gases from the cylinder head ports and routes them to the turbocharger, making it a critical component for engine efficiency and