Parts for your 2015 Mitsubishi Lancer-Exhaust gasket

2015 Mitsubishi Lancer Exhaust Gasket

Based on the Mitsubishi Motors Workshop/Service Manual for the CJ/CF Lancer (2015, Exhaust section) and the Mitsubishi ASA OEM parts catalogue, the 2015 Mitsubishi Lancer does use exhaust gaskets at key joints. These include the cylinder head to exhaust manifold gasket, the manifold/front pipe “donut” or ring gasket with spring bolts, and various flange gaskets along the system. Performance variants (e.g., 4B11T turbo) also use specific turbo-to-manifold and turbo-to-downpipe gaskets. Haynes and similar repair manuals for 2007–2017 Lancer models note the same gasket locations and service steps.

On a 2015 Lancer, the exhaust gasket’s job is simple but crucial: seal hot gases so they flow through the cat and mufflers without leaking. A healthy gasket keeps the cabin free from fumes, quietens the note, helps the O2 sensors read cleanly, and maintains backpressure for decent driveability and emissions.

There’s no fixed interval for replacement, they’re changed when leaking or any time a joint is separated during exhaust work. As part of routine servicing, it’s smart to have a quick look and listen:

• Cold-start tick, hiss, or chuffing near the manifold or under the car
• Soot marks around flanges or a whiff of exhaust near the front of the car
• Sharper or raspy note, slight loss of torque, or odd O2-related codes after other exhaust work

When replacement’s on the cards, good workshop practice makes all the difference:

• Always fit new gaskets whenever a joint is disturbed (manifold, donut, or flange)
• Use quality MLS/graphite/OE-spec gaskets, cheapies can crush, split, or blow out
• Inspect studs, nuts, and spring bolts, replace tired hardware and seized fasteners
• Clean mating faces flat and true, a quick straightedge check saves comebacks
• Tighten evenly to the workshop manual torque sequence/specs, recheck flange bolt tightness after a couple of heat cycles
• Use high-temp anti-seize on exhaust fasteners and O2 sensor threads (avoid sensor tip contamination)

Whether it’s the 2.0 or 2.4-litre Lancer, keeping those gaskets in good nick helps the car run quieter, cleaner, and nicer to drive. If there’s any doubt, have a technician smoke-test the system and sort it before fumes or noise become a real headache.

Popular questions

Does a 2015 Mitsubishi Lancer have an exhaust gasket?
Yes. The Lancer uses a manifold-to-head gasket, a sprung “donut” gasket at the front pipe, and additional flange gaskets. Turbo models add turbo-related gaskets. These sealing points are shown in the Mitsubishi service manual and OEM parts catalogue.

How often should the exhaust gasket be replaced on a 2015 Lancer?
There’s no set kilometre interval. Replace when leaking, noisy, or whenever a joint is undone during repairs or upgrades. A quick inspection at regular services is plenty—fix small leaks early to avoid warped flanges or cooked studs.

Is it safe to drive with a leaking exhaust gasket?
It’s not recommended. Leaks can pull oxygen into the stream, upsetting sensor readings and fuelling, and fumes can enter the cabin. It can also get louder fast. Book it in and have the leaking gasket and any dodgy hardware replaced.