2016-2017 Mazda 6 2.5 Exhaust Manifold

Also known as

Exhaust Header

Engine Exhaust Manifold

Exhaust Collector

Front Exhaust Manifold

What this part does

The exhaust manifold bolts directly to the engine cylinder head, collecting hot exhaust gases from the individual cylinders and routing them into the primary exhaust pipe. On the 2.5L Skyactiv engine, this component utilizes a specialized 4-2-1 tube design to improve exhaust gas scavenging, which directly contributes to the engine's efficiency and power output. When an exhaust manifold fails, it typically cracks or warps at the mounting flange due to extreme heat cycling. This results in audible exhaust leaks, a distinct ticking noise from the engine bay, and often triggers a check engine light because the upstream oxygen sensors read an incorrect air-to-fuel mixture.

Fits these vehicles

Before you order

Verify that your vehicle is equipped with the 2.5L naturally aspirated engine, as turbocharged models use a completely different manifold design. Always install this part using a brand new exhaust manifold gasket, as reusing old, crushed gaskets will guarantee a leak. It is highly recommended to inspect the mounting studs on your cylinder head; replace any rusted or stretched hardware to ensure proper clamping force when installing the replacement manifold.