Parts for your 2005 Mitsubishi Lancer-Manifold gasket

2005 Mitsubishi Lancer manifold-gasket: what it does and when to sort it

Based on the Mitsubishi Motors 2005 Lancer Service Manual (Engine—Intake and Exhaust Manifolds), the Mitsubishi ASA parts catalogue for 4G18/4G94/4G69 engines, and major gasket application guides (e.g., Fel‑Pro and Victor Reinz), the 2005 Mitsubishi Lancer is fitted with manifold gaskets—both intake-manifold and exhaust-manifold types—so the part is absolutely relevant to this model.

On a 2005 Lancer, the manifold-gasket’s job is simple but crucial: it seals the join between the cylinder head and the intake or exhaust manifold. On the intake side, a healthy gasket keeps unmetered air out, stabilising idle, fuel trims and emissions. On the exhaust side, it keeps hot gases from escaping before they reach the oxygen sensors and catalytic converter, maintaining performance and preventing that tell‑tale ticking under the bonnet. Good sealing helps fuel economy and keeps the engine running sweet as, especially on long Kiwi and Aussie kilometres.

There’s no fixed replacement interval, but a manifold-gasket should be replaced whenever the manifold is removed, or if symptoms show up. Common signs include a whistling or hissing (intake), a sharp ticking on cold start (exhaust), rough idle, poor fuel economy, sulphury exhaust smells, or soot marks around manifold flanges. A check-engine light for lean running can also point to an intake leak.

When servicing a 2005 Lancer’s manifold-gasket, a few best practices keep things drama-free:

• Use quality, application-correct gaskets (MLS or composite as specified for the engine variant). Don’t reuse old gaskets or crush rings.
• Clean mating faces carefully—plastic scraper and solvent—avoiding gouges. Check flatness with a straightedge if there’s any doubt.
• Follow the factory torque sequence and specs, usually working from the centre out. A torque wrench is non-negotiable.
• Replace tired studs, spring bolts and nuts on the exhaust