Parts for your 2018 Mitsubishi Asx-Exhaust mount

2018 Mitsubishi ASX Exhaust Mounts — What They Do and When to Replace

Exhaust mounts (also called exhaust hangers or insulators) are fitted to the 2018 Mitsubishi ASX. Technical sources including the Mitsubishi ASX/RVR/Outlander Sport workshop manual (Group 15 – Exhaust System) and the Mitsubishi Motors ASA electronic parts catalogue list multiple rubber mounting insulators and associated brackets supporting the front pipe, centre section, and rear muffler on this platform. These components are integral to how the ASX’s exhaust is supported and isolated from the body.

On the 2018 ASX, the exhaust mounts suspend the system from the underbody while absorbing vibration and allowing a bit of movement as the engine rocks and the pipework heats and cools. That flexible support keeps the tailpipe sitting straight in the bumper, stops annoying rattles, and protects welds and flanges from stress. The mounts are typically heat‑resistant rubber insulators that sit on pegs or brackets welded to the exhaust and the chassis.

Over time, heat cycles, road grime, and the odd splash of oil can harden, crack, or stretch the rubber. When that happens, the exhaust can droop, knock on the underbody over bumps, or vibrate at idle. Common tells are a thud or rattle on take‑off, a tailpipe that looks off‑centre, or a buzz through the cabin when in gear at a standstill.

Good practice is to inspect the ASX’s exhaust mounts at regular services—think each 12 months or 20,000 km, and always after an off‑road trip or kerb strike. If any mount is perished, split, or overly soft, replace it. Because the system relies on even support, it’s smart to renew mounts in pairs on the same section (for example, both rear muffler hangers). Use quality OEM‑equivalent rubber insulators and check the metal brackets for corrosion or loose fasteners while you’re there.

Replacement is straightforward but a few tips help: let the exhaust go stone cold, support the pipework with a stand, and use a dab of silicone spray to ease the new rubber onto the pegs—no petroleum grease. Make sure the exhaust sits naturally without twist or preload before tightening any brackets. After fitting, start the engine, check for contact points, and look for clean clearance around the rear bumper and heat shields. If torque specs are required for bracket bolts, follow the Mitsubishi workshop manual.

With normal use, many ASX mounts last years, but by 80,000–120,000 km it’s common to find at least one getting tired. Staying on top of them keeps the car quiet, protects the exhaust from stress cracks, and avoids a sagging tailpipe.

Popular questions about 2018 Mitsubishi ASX exhaust mounts

How often should exhaust mounts be replaced on a 2018 ASX?

There’s no fixed interval, but inspecting them at each service (about every 12 months or 20,000 km) is wise. Many last well beyond 80,000 km, though heat and conditions can shorten that. Replace at the first signs of cracking, sagging, or excessive movement.

What are the signs of a bad exhaust mount on the ASX?

Listen for knocking over bumps, a rattle at idle, or a thud on take‑off. Visually, a low‑hanging muffler or an off‑centre tailpipe is a giveaway. If the exhaust touches a crossmember or heat shield, the mounts are likely tired.

Is it safe to drive with a broken exhaust mount?

Short term, the car may still drive, but the exhaust can swing, stress joints, or hit the body. That can lead to leaks or damage. It’s best to sort a failed mount promptly to protect the system and keep things quiet and secure.