Parts for your 2018 Subaru Exiga-Exhaust mount

2018 Subaru Exiga exhaust mount — what it does and when to replace it

Technical references, including the Subaru Exiga/Crossover 7 (YA-series) factory service manual (Exhaust section) and Subaru’s global parts catalogue, show multiple rubber exhaust mounts (often called hangers or cushion rubbers) supporting the front, centre and rear muffler assemblies on 2018 Exiga models. So an exhaust mount is absolutely relevant and fitted on the 2018 Subaru Exiga.

On this Exiga, the exhaust mounts keep the system suspended at the correct height and alignment while isolating vibration from the cabin. They allow just enough movement for thermal expansion and engine rock, preventing knocks on the subframe, rear bumper and heat shields. That’s how the car avoids rattles at idle, thumps over bumps, and premature stress on joints, flanges and the flex section.

There’s no fixed replacement interval, but in Aussie and New Zealand conditions—heat, UV and the odd gravel road—rubber mounts harden, crack or stretch over time. A sensible approach is to inspect them at every service or at least every 20,000–30,000 km. If the tailpipe looks off-centre, the muffler sags, or there’s a dull clunk over speed humps, the mounts are prime suspects.

When one mount is perished, the rest are usually not far behind. Many workshops replace them in pairs or as a small set to keep the system sitting square. Sticking with OE-spec rubber is the quietest option, firmer aftermarket hangers can raise NVH. On coastal cars, also check the metal hanger brackets and fasteners for corrosion.

• Look for splits, glazing, elongation of the holes, and shiny witness marks where the exhaust has been touching.
• Support the exhaust before removing mounts, a transmission jack or a mate’s helping hands works a treat.
• Use silicone spray to slip new rubbers on, avoid petroleum grease on rubber.
• After refit, centre the tailpipe in the bumper cut-out and recheck clearances around the rear diff, subframe and heat shields.
• Road-test for rattles, then recheck after a few heat cycles as the system settles.

Done right, fresh mounts restore the Exiga’s refined feel and protect the rest of the exhaust from costly stress and knocks.

How often should exhaust mounts be replaced on a 2018 Subaru Exiga?

They don’t have a fixed schedule. Most owners get 5–10 years out of them, but heat, UV and towing shorten life. Inspect at every service or 20,000–30,000 km and replace when cracked, hard, sagging or noisy.

What are the common signs the Exiga’s exhaust mounts are failing?

Rattles at idle, thumps over bumps, a tailpipe that sits off-centre, or visible sag at the rear muffler. Underneath, you may see torn rubbers or elongated holes in the hangers.

Can firmer polyurethane hangers be used on the Exiga?

Yes, but expect a bit more vibration and exhaust “presence” in the cabin. For daily use and family comfort, OE-spec rubber is usually the sweet spot, polyurethane suits lowered cars or performance setups needing extra support.