During the combustion process, the air-fuel mixture in the cylinders produces exhaust gases. These by-products need to exit the engine, and the exhaust manifold provides this means of escape. Every time the pistons do the exhaust stroke, they push the exhaust gases into the header. By collecting these gases from the cylinders and moving them into a central pipe, these fumes finally move to the exhaust pipe. Because an exhaust gas leak is dangerous, exhaust gaskets are used to prevent this from happening. When you think your car has an exhaust leak, it's best to have the header and the exhaust gasket checked. More often that not, the gasket is the one that needs to be replaced.
Factory exhaust manifolds are made of cast iron or stainless steel. When you check out the aftermarket offerings, these headers are offered in stainless steel and ceramic. Each material has its own benefits-ceramic types are lighter than their stainless steel counterparts. However, stainless steel is not prone to cracking under high temperatures. A modification that you can introduce to your engine's exhaust manifold is by insulating it.
A car exhaust manifold can be coated in one of three ways. The first one is spraying ceramic paint on the header-the thin coat has little insulation properties, but it helps lower overall engine bay temperatures by reducing heat radiation from the manifold. The second one is ideal for tuned street cars and race cars-a ceramic mixture is applied using thermal spraying. This provides a durable ceramic coating with excellent thermal insulation. Finally, there's the exhaust wrap-it's cheap and fairly easy to install, but this may lead to increased degradation of the header in the long run. Each type has its own pluses and minuses, and it's up to you to decide what's best for your needs.
Aftermarket exhaust manifolds are popular with automotive enthusiasts, engine tuners, and race teams because these parts provide additional speed because exhaust gases exit faster. And since there's additional torque being produced by the engine, you get better fuel economy. This is also a reason why diesel engines are more efficient compared to gasoline engines.
If you have plans of upgrading to an aftermarket exhaust manifold, check out our updated product catalogs. Whether you're looking for more torque output during stop-go driving or building a track-worthy race car, we've got a wide selection of quality headers available. Do keep your engine type and model handy, so you'll have an easier time searching for the right header. We offer efficient, helpful customer support and speedy delivery services. When you need OEM-spec headers, we provide quality and affordable parts. After all, car owners want maximum value for their money.