Parts for your 2018 Honda Odyssey-Exhaust mount

2018 Honda Odyssey exhaust-mount: purpose, service tips and FAQs

Technical confirmation: Yes, the 2018 Honda Odyssey is fitted with exhaust-mounts (rubber hangers/insulators). Honda’s factory service information for the 2018 Odyssey (Exhaust System—Removal/Installation) and Honda’s electronic parts catalogue diagrams for the centre pipe and rear muffler list multiple “muffler insulator/exhaust mount” pieces used to support and isolate the exhaust assembly. These are standard hardware on the RL6/RC Odyssey platform.

The exhaust-mount on a 2018 Honda Odyssey does a deceptively big job. It holds the weight of the exhaust while keeping the pipes and mufflers correctly aligned, and it isolates vibration so the cabin stays quiet and comfy. By letting the system move slightly, the mounts protect welds, joints and the flex section from cracking, especially over corrugations and speed bumps common on Aussie and Kiwi roads.

As part of routine servicing, it’s smart to inspect each exhaust-mount from the centre of the car back to the tailpipe. Look for perished rubber, splits, sagging, or oil contamination that makes the rubber go soft. If a mount is torn or stretched, the exhaust can sit low, knock on the subframe, or rattle at idle. In NZ, that can trigger a WOF fail, in Australia it can cause a rego or roadworthy knock-back.

Replacement is straightforward with the right approach. Always work on a cold exhaust, support the system with a stand or jack, and use silicone spray to slide the rubber off and on the hanger pegs. Check the steel hangers for rust and the brackets for loose hardware. After fitting, make sure there’s clearance around heat shields, the rear bumper and the suspension arms, then start the Odyssey and listen for knocks or buzzes. Follow Honda torque specs for any bracket bolts you’ve touched.

• Replace the exhaust-mount if you notice: visible cracks or splits, the tailpipe sitting off-centre, thuds over bumps, a new vibration at idle, or any metal-on-metal contact.
• Inspection cadence: give the mounts a look every service or 10,000–15,000 km, and sooner if you tow, drive on unsealed roads, or the vehicle sees coastal conditions.

Choosing parts? Genuine-style rubber mounts keep factory NVH nice and civilised. Firmer polyurethane options can last longer but may transmit a touch more vibration—fine for some, not everyone’s cup of tea in a family van. Either way, replacing tired mounts is inexpensive insurance for the rest of the exhaust.

• Tip: If one mount has failed, check the others. It’s common to replace mounts in pairs or all at once for consistent support.

Popular questions about 2018 Honda Odyssey exhaust-mount

How can someone tell an exhaust-mount is failing on a 2018 Odyssey?
They’ll often notice a dull knock over bumps, a buzz at idle, or the tailpipe sitting low or skewed. A quick look underneath may show a cracked or stretched rubber mount, or witness marks where the exhaust has been touching a crossmember or heat shield.

Left alone, a failed mount can stress joints and make other exhaust components wear faster, so it’s worth sorting promptly.

Is OEM rubber or polyurethane better for replacement mounts?
OEM-style rubber keeps the Odyssey’s ride and refinement closest to factory, which most families prefer. Polyurethane is tougher and can last longer, but it’s firmer and may pass a bit more vibration into the cabin. For everyday use, quality OEM-equivalent rubber is usually the sweet spot.

Is it safe to drive if an exhaust-mount has broken?
If one mount lets go, the exhaust might hang lower and could hit the body or road. Short, gentle trips to a workshop are usually okay if nothing’s dragging, but it’s best to fix it quickly to avoid damaging the exhaust, heat shields or bumper—and to stay onside with WOF/roadworthy rules.