Parts for your 2007 Mitsubishi Outlander-Exhaust gasket

2007 Mitsubishi Outlander exhaust gasket — what it is and when to replace it

Based on Mitsubishi’s 2007 Outlander workshop manual (engine and exhaust sections) and parts catalogues such as Mitsubishi ASA/CAPS and common aftermarket listings, the 2007 Mitsubishi Outlander does use exhaust gaskets — including manifold-to-cylinder-head gaskets and ring/donut gaskets at key flange joints in the exhaust system.

On this Outlander, the exhaust gasket’s job is simple but critical: it seals the joints where hot exhaust gases leave the engine and flow through the headers/manifolds, catalytic converter and pipework to the rear. A healthy gasket prevents leaks that rob power, upset oxygen sensor readings and let fumes and noise escape under the bonnet or beneath the cabin.

As part of regular servicing, it’s smart to check for exhaust leaks every 10,000–15,000 km or at each service. Tell-tale signs include a ticking sound on cold start, a sharp puffing under light throttle, a whiff of exhaust near the front of the car, or sooty marks around a flange. On the Outlander, a leak up front can trigger a check engine light because the O2 sensors pick up funny readings when unmetered air sneaks in.

Any time the exhaust is disturbed — say, removing the manifold, dropping the front pipe, or replacing the cat — new gaskets should go in. Re-using old ones is a false economy