Parts for your 2018 Toyota Crown-Exhaust mount

2018 Toyota Crown exhaust-mount: purpose, care and when to replace

Exhaust-mounts are absolutely used on the 2018 Toyota Crown (S220 series). Technical references: Toyota’s Electronic Parts Catalogue (EPC) for ARS220/AZS220/GWS224 lists multiple “Insulator, Exhaust Pipe” rubber hangers and support brackets that suspend the centre pipe and rear mufflers, and the Toyota Repair Manual for the Crown includes inspection and refit steps for these insulators during exhaust removal/installation. So yes, this model relies on exhaust-mounts (rubber insulators/hangers) to hold the system in place.

On the Crown, the exhaust-mount’s job is simple but vital: it isolates vibration, supports the weight of the pipes and mufflers, and allows a bit of movement so the system doesn’t transmit harshness into the cabin. These rubber insulators live near the centre pipe and rear mufflers, where they hook between welded exhaust pegs and body brackets.

Because they’re rubber, they harden, crack or stretch over time—especially with heat, road grime, and the odd scrape over a speed hump. Worn mounts can let the exhaust sit off-centre, knock on the underbody, or sag the muffler. Leave it long enough and you can stress the flex joints or fracture a hanger weld.

• Tell-tale signs: thuds or rattles over bumps, a buzzy vibration at idle, a visibly low or skewed muffler, or shiny “witness marks” where the pipe touches a shield or crossmember.
• Service tip: during routine servicing or a WOF/roadworthy check, inspect each insulator for cracks, glazing, excessive softness, or elongation of the holes.
• Replacement: swap any suspect insulator in pairs on the same section (e.g., both rear hangers). Use genuine or OE-quality rubber, polyurethane options are stiffer if the car runs hotter or carries loads, but may add a touch of cabin buzz.
• Fitment: support the exhaust with a stand, lube the pegs with silicone spray, and slide the new insulators on. Check clearances around the subframe, heat shields and bumper, then recheck after a short drive.
• Intervals: there’s no fixed kilometre interval—condition-based replacement is the go. Many last 7–10 years, but climate and use make the difference.

Keeping the Crown’s exhaust-mounts healthy protects the rest of the system, keeps it quiet and tidy, and helps it pass noise and safety checks without fuss.

Popular questions about 2018 Toyota Crown exhaust-mounts

How many exhaust-mounts does a 2018 Toyota Crown have?
Typically there are several rubber insulators across the centre and rear sections—commonly two at the rear muffler and one or more along the centre pipe, depending on engine/trim. The exact count varies by variant (turbo, hybrid) and market spec, as shown in the Toyota EPC.

What’s the best replacement material—rubber or polyurethane?
OE-style rubber matches factory NVH and is ideal for daily use. Polyurethane is tougher and can resist heat and oil better, suiting harsher conditions, but it can transmit a bit more vibration into the cabin. For most Crowns, quality rubber is the sweet spot.

Is it safe to drive with a broken exhaust-mount?
If one mount fails, the exhaust might still hang on others, but it can sag, knock, or strain joints. Short, careful trips to a workshop are usually fine, but it’s best to replace the failed insulator promptly to avoid damage to the pipework or bumper.