Parts for your 2002 Mitsubishi Pajero-Exhaust gasket

2002 Mitsubishi Pajero Exhaust Gasket — Purpose, Service Tips and When to Replace

Yes, the 2002 Mitsubishi Pajero does use exhaust gaskets. Technical documentation such as the Mitsubishi Motors Pajero/Montero Workshop Manual for the NM/NP series (Group 15 – Exhaust System) and the Mitsubishi ASA electronic parts catalogue list multiple exhaust gaskets for this model. These include the cylinder head–to–exhaust manifold gaskets (both banks on the V6), manifold–to–front pipe ring/doughnut gaskets on petrol models, and manifold–to–turbo plus turbo outlet–to–front pipe gaskets on the 3.2 Di‑D diesel. There are also flange and crush gaskets further down the system and small steel gaskets at EGR connections.

Their job is simple but critical: seal hot exhaust gases so they flow through the system without leaks, noise, fumes, or loss of performance. On the diesel, a good seal also supports correct turbo response. When a gasket fails, expect a ticking sound on cold start, soot marks at a joint, an exhaust smell near the bonnet or cabin, and sometimes a drop in power or a check-engine light from skewed O2 readings on petrol models.

While there isn’t a strict time/kilometre interval to replace exhaust gaskets, they should be renewed any time the joint is disturbed (for example, during manifold, turbo, cat, or front pipe work) and immediately if a leak is detected. The doughnut/graphite ring types are one‑use crush seals, reusing them usually results in a leak. On the 4M41 diesel, always replace the manifold‑to‑turbo and turbo outlet gaskets when the turbo is removed.

• Inspect at each service for soot traces, loose spring bolts, and damaged studs.
• Cold-start listening test: a sharp tick that fades as it warms often points to a leaking manifold gasket.
• Use quality OEM‑equivalent gaskets, cheap composite rings crush unevenly and won’t last.
• Clean flanges, check flatness, and tighten evenly to the workshop manual torque specs, use new spring bolts where specified.
• Apply high‑temp anti‑seize to studs where the manual allows, some joints are meant to be assembled dry.

Done right, a fresh set of gaskets keeps the Pajero quiet, compliant, and happy on long Kiwi and Aussie drives—without fumes sneaking into the cabin.

Does a 2002 Pajero have exhaust manifold gaskets, and where are they?

It does. On the V6 petrol there’s a manifold gasket on each bank between the cylinder head and manifold. On the 3.2 Di‑D diesel, the manifold gasket sits between the head and the turbocharger manifold, with additional gaskets at the turbo inlet and outlet. These are service items whenever the joint is disturbed.

What are the signs of a blown exhaust gasket on a 2002 Pajero?

Common clues include a ticking or chuffing noise on cold start, black soot around a flange, and an exhaust smell. Petrol models may log O2‑sensor or fuel‑trim faults, the diesel can feel lazier to boost if the leak is near the turbo. Noise often lessens as it warms, which is a classic giveaway.

Should the front pipe doughnut gasket be replaced if removed?

Yes. The ring/doughnut style is a crush gasket designed for one use. Once compressed, it won’t reseal reliably. Always fit a new ring and inspect or replace the spring bolts so the joint can flex without leaking.