1078107 Manifold Fits Caterpillar ModelsOne New Aftermarket Replacement Exhaust Manifold Fits Caterpillar (Fits CAT) 3412 Engine Series This aftermarket exhaust manifold is a direct replacement Fits Caterpillar part number 1078107, designed for the Fits CAT 3412, 3412C, and 3412E diesel engine family. The exhaust manifold routes combustion gases from the engine cylinder head to the exhaust system and is a critical component in maintaining proper engine performance and emissions control