An integrated Exhaust Manifold, or "headifold," is an exhaust manifold cast into an engine's cylinder head and cooled by antifreeze. This type of design, where the exhaust manifold is no longer a ...

We may receive a commission on purchases made from links. An engine relies heavily on air to make the combustion process work properly. The exhaust manifold, which is attached to the engine block, ...

When it comes to car mods, exhaust headers are a common place to start. But what exactly makes them different from stock manifolds? Here's what to know.

No matter how good a car looks from the curb or on the show field, everyone wants to look under the hood. Today, engine bays look better than they did any time after the first oil change, thanks to ...

Welcome back to our series on properly diagnosing mechanical problems rather than blindly chucking money at replacement parts hoping to stumble on a fix. Granted, a cracked exhaust manifold doesn’t ...

As much as we like the 5.9L Cummins powerplant, the stock exhaust manifold is constrictive and contorted, interfering with the flow of gases to the turbo and downpipe. That, in turn, can produce the ...

None of us were there. Even so, it seems safe enough to speculate that the ancient art of engine swapping dates back about as far as the engine itself. For our distant ancestors, it was likely a ...

Bolted directly to the engine block, the exhaust manifold is the first section of a vehicle’s exhaust system. It funnels exhaust gases from all the cylinders and routes them to the car’s catalytic ...