Parts for your 2008 Mitsubishi Outlander-Manifold gasket

2008 Mitsubishi Outlander manifold gasket — what it does and when to replace it

Yes, a manifold gasket is absolutely used on the 2008 Mitsubishi Outlander. Technical sources including the Mitsubishi Outlander (CW) Workshop Manual for 2007–2012 (intake and exhaust sections), the Mitsubishi ASA electronic parts catalogue, and common aftermarket catalogues from gasket makers all list both intake and exhaust manifold gaskets for the 2.4L 4B12 and 3.0L 6B31 engines (and applicable diesel variants). The workshop procedures also specify replacing these gaskets whenever the manifold is removed, confirming they’re a normal service part.

On this Outlander, the manifold gaskets seal the mating surfaces between the manifolds and the cylinder head. The intake manifold gasket keeps unmetered air out so the engine maintains proper vacuum, stable idle and correct fuel trims. The exhaust manifold gasket keeps hot gases in the exhaust path so the O2 sensors read accurately and the vehicle doesn’t develop a ticking leak, fumes in the cabin, or scorched nearby components.

They’re not a scheduled replacement item