Parts for your 1987 Mitsubishi Pajero-Exhaust gasket

1987 Mitsubishi Pajero exhaust gasket — what it does and when to replace it

Based on technical sources including the Mitsubishi factory service manual for first‑generation Pajero/Montero (Group: Exhaust) and the Mitsubishi ASA electronic parts catalogue for Gen I models, a 1987 Mitsubishi Pajero is fitted with exhaust gaskets. These include the cylinder‑head to exhaust‑manifold gasket, flange/donut gaskets at pipe joints, and (on turbo‑diesel variants) turbo to manifold and turbo outlet gaskets. Major aftermarket catalogues (e.g., Victor Reinz, Ajusa, Nippon Reinz) also list specific exhaust gaskets for the 4G54 petrol and 4D56 diesel engines used in 1987 Pajeros, confirming the part’s relevance.

On this classic 4x4, the exhaust gasket’s job is simple but vital: seal hot, high‑pressure exhaust gases so they leave via the tailpipe, not the engine bay. At the manifold, the gasket copes with extreme heat cycles and vibration, preventing leaks that can rob torque, make that tell‑tale tick on cold start, and let fumes creep into the cabin. Down the line, flange and donut gaskets keep joints tight as the system expands and contracts on corrugations and long highway runs.

As part of regular servicing, it pays to keep an ear and nose out. Soot tracks around manifold or flange joints, a tapping noise that quietens as it warms up, or a whiff of exhaust under the bonnet are all red flags. If a joint is disturbed during other work—say, pulling the manifold, dropping the front pipe, or removing the turbo—new gaskets should go in as a matter of course.

• Inspect visually at each service interval for soot, black streaks, or loose studs/nuts.
• If replacing: clean mating faces dead flat, chase threads, fit quality OEM‑spec or equivalent gaskets, and follow the workshop’s torque sequence and specs.
• Recheck fasteners after a full heat cycle if the manual allows