An exhaust manifold is a component in an internal combustion engine that collects the exhaust gases from each of the engine's cylinders and directs them into a single pipe, known as the exhaust system. The primary function of the exhaust manifold is to channel the hot, noxious gases produced by the combustion process away from the engine and out of the vehicle. By doing so, it helps to reduce engine noise and prevent harmful emissions from entering the cabin.Cat® parts are manufactured to precise specifications and are built for durability, reliability, productivity, less environmental impact, and reuse.