Parts for your 2015 Mitsubishi Outlander-Exhaust mount

2015 Mitsubishi Outlander exhaust mount – what it does and when to replace it

Yes, the 2015 Mitsubishi Outlander uses exhaust mounts (also called exhaust hanger insulators). This is confirmed by Mitsubishi Motors’ Service Manual for the 2014–2016 Outlander (GF/GG/ZW) in the Exhaust System section, the Mitsubishi ASA electronic parts catalogue listing muffler/exhaust “insulator” mounts, and general repair guides such as the Haynes Outlander manual. Those technical sources all show multiple rubber mounts supporting the front pipe, centre muffler and rear muffler on this model.

On this Outlander, the exhaust mounts are chunky rubber insulators that suspend the exhaust from the body and subframes. Their job is to hold the pipework in the right spot, soak up engine and road vibration, and keep clearances tidy around the rear bumper, underbody and driveshafts. Good mounts prevent knocks on start-up, stop droning on the motorway, and reduce stress on joints, flanges and the flex section—especially handy if the vehicle tows or does a bit of gravel road work.

As part of regular servicing, it’s smart to inspect the mounts every 10,000–15,000 km (or at each service). Look for perished or cracked rubber, stretched/elongated holes, torn insulators, and rusty hanger rods on the exhaust. If the exhaust sits low, touches a heat shield, or the tailpipe looks off-centre in the bumper, the mounts may be tired.

Replacement is straightforward for a workshop or capable DIYer. Support the exhaust, spritz the mounts with silicone spray, and lever them off the pegs. Fit like-for-like insulators and confirm the system is centred with adequate clearance to heat shields, crossmembers and the rear valance. Tighten any bracket fasteners to the factory spec in the Mitsubishi service manual. If one mount has failed, checking and often replacing the neighbouring mount is a good idea to keep the system level.

For Outlanders that tow, carry full loads, or live near the coast, the mounts and hanger rods can age faster due to heat, weight and corrosion. Using quality OEM-spec rubber insulators preserves comfort, stiffer performance mounts can add cabin vibration, so they suit drivers who value firmness over refinement. Either way, fresh mounts are a small outlay that can save catalytic converters, flex joints and mufflers from costly fatigue and fractures.

• Common clues it’s time: thumps over bumps, buzzing at idle, tailpipe sitting low, or a new rattle on cold start.
• Best practice: inspect at each service, replace in pairs when practical, and recheck clearances after fitment.

Popular questions

How often should exhaust mounts be replaced on a 2015 Outlander?
There’s no fixed interval. Have them checked every service. In typical Aussie and Kiwi conditions, many last 5–10 years, but vehicles that tow, see unsealed roads or coastal air may need them sooner if the rubber perishes or stretches.

What are the signs an exhaust mount has failed?
Look for a droopy tailpipe, knocks over speed humps, fresh rattles at idle, or the exhaust touching a heat shield. Visual checks often show cracked rubber or elongated holes in the insulator.

Can stiffer aftermarket mounts be used?
Yes, but stiffer polyurethane or performance mounts can transmit more vibration into the cabin. For daily-driven Outlanders, OEM-spec rubber keeps the ride quiet and comfy, performance options suit those prioritising firmness.