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Exhaust Manifolds

Gaskets, Studs, Bolts, Integrated Catalytic Converters

The exhaust manifold collects the exhaust gas from the cylinder head exhaust ports and channels them to a single outlet, connected to an exhaust pipe. The exhaust gases continue flowing through pipes in the system, through the interconnected catalytic converter and muffler, and out the tailpipe at the rear of the vehicle. The manifold is secured to the cylinder head and exhaust pipe with bolts or studs and nuts, and these junctures are sealed with gaskets.

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Most exhaust manifolds are cast iron, however some are made of steel or stainless steel. Heat shields are mounted on some manifolds to protect other components from their extreme heat, and on some applications to prevent exposing the cabin floor to excessive heat, which could make driving very uncomfortable. On some vehicles the oxygen sensor, which signals the exhaust oxygen content to the engine control module, is mounted on the exhaust manifold.

We aim to provide our customers with the finest Exhaust Manifolds the industry can offer, which is why we accept no compromise when it comes to the quality. Created by the most reputable names in the industry, such as Walker, Bosal, Eastern Catalytic, Dorman, Mopar, Omix-Ada the Exhaust Manifolds we've gathered for you feature precise design and everlasting durability.

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In-line 4-cylinder and 6-cylinder engines typically have one exhaust manifold, while V6 and V8 engines have two, one for each cylinder bank. The exhaust pipe that connects to the manifolds on V-type engines is called a Y-pipe, but some engines have a manifold crossover pipe that connects the manifolds, and only one exhaust pipe that exits from one manifold. Exhaust manifolds are generally one of the most reliable components in the exhaust system, but because they are continually exposed to extreme temperature cycles, along with other factors, occasionally replacement may be warranted.

The tremendous difference between cold and normal operating temperature that occurs over thousands of cycles can cause the manifold to crack or warp. A cracked manifold will result in an exhaust leak and noise, with the potential for noxious exhaust fumes to enter the cabin. A warped manifold may not seal against the cylinder head properly, which could also result in an exhaust leak. Rust is a common problem with cast iron manifolds and this can result in seized and broken studs, and corroded surfaces that may no longer seal properly. It’s also common for heat shields to crack and cause a rattling noise.

Regardless of the exhaust manifold malady, we can help with replacement components that will look, fit, and function just like original equipment parts, but for much less. We have exhaust manifolds, exhaust manifolds with integrated catalytic converters, manifold and exhaust pipe gaskets, studs/nuts, bolts, crossover pipes, and everything else exhaust manifold related. Many of our manifolds and manifolds with integrated converters come as complete kits with all gaskets, hardware, and shields (as required) included, so one part number gets you everything you need to complete the job.

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Guides & Articles
Headers are installed because the stock exhaust manifolds usually flow poorly. An exhaust header has individual tubes for each exhaust port, allowing each exhaust pulse to flow unobstructed from the cylinder head. The tubes on headers are usually larger in diameter than the runners on an exhaust manifold and the tubes are mandrel bent for gradual radius bends.
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Exhaust Manifolds Reviews
Average rating: 4.5 4.6 - 33 reviews
| Posted by Felix | (Chicago, IL)

Good very nice.

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