Parts for your 2012 Mitsubishi Lancer-Exhaust gasket

2012 Mitsubishi Lancer exhaust gasket — what it does and when to replace

Yes — the 2012 Mitsubishi Lancer uses exhaust gaskets. This is shown in the Mitsubishi Lancer (CJ) Workshop Manual, Group 15 Exhaust, and backed by the Mitsubishi ASA/CAPS parts catalogue and major application guides from Walker and Fel‑Pro. On non‑turbo 2.0L/2.4L models you’ll find gaskets at the exhaust manifold to cylinder head, at the front pipe (often a crush “donut” ring with spring bolts), and at the centre/rear flange joins. Turbo variants (Ralliart/Evo X) also use gaskets at the manifold‑to‑turbo and turbo‑to‑downpipe.

The exhaust gasket’s job is simple but critical: seal hot, high‑pressure exhaust gas at each joint so the system stays quiet, safe and sensor‑accurate. A leaking gasket can cause a sharp ticking on cold start, soot marks at the flange, whiffs of exhaust near the engine bay or underbody, and can skew oxygen‑sensor readings, nudging up fuel use and triggering a check‑engine light.

Different spots use different gasket types. Manifold gaskets are usually multi‑layer steel to cope with heat cycling and movement. Front‑pipe joints commonly use a graphite/steel crush ring that conforms under spring‑loaded bolts. Flat flanges toward the rear may use composite or steel‑layer gaskets. All are considered replace‑on‑disturb items in the workshop manual — once a joint is undone, plan on fitting a new gasket.

Good servicing practice on a Lancer is to inspect the exhaust at each service or WOF/rego check for noise, soot tracks and fumes. There’s no fixed kilometre interval to replace gaskets