Parts for your 2012 Toyota Crown-Exhaust mount

2012 Toyota Crown exhaust mount — what it does and when to replace it

Yes, exhaust mounts are fitted to the 2012 Toyota Crown. Technical sources including the Toyota Electronic Parts Catalog for the S200-series Crown (GRS200/204, 2012 MY) and the Toyota Repair Manual exhaust pipe section list components termed “Insulator, Exhaust Pipe Support” and associated brackets along the front pipe, centre section and rear muffler. These rubber insulators (typically four to six depending on variant and market) suspend the exhaust under the car and keep it correctly aligned.

On this Crown, the exhaust mount’s job is to isolate vibration and noise from the cabin while letting the exhaust move slightly as it heats and cools. The rubber hangers stop the system from knocking the underbody, protect oxygen sensors and flanges from undue stress, and keep the tailpipe sitting straight in the bumper cut-out. When they harden, stretch or crack, the system can sag or shift, which shows up as rattles, thumps over bumps, or a tailpipe that looks a bit crooked.

For servicing, it’s smart to inspect the mounts at every service or at least every 20,000–30,000 km, and any time the exhaust has been removed or the car has had an underbody knock. In Aussie and Kiwi conditions—with heat, road grime and the odd coastal weekend—rubber insulators can perish faster. Replacing tired mounts is inexpensive and can tidy up NVH, especially at idle with the air-con on.

• Common signs a Crown exhaust mount needs attention:
  • Rattle or thud from the rear on start-up or over speed humps
  • Exhaust visibly sagging, or tailpipe off-centre
  • Perished, cracked or oil-soaked rubber hangers
  • Exhaust contacting heat shields or crossmembers

• Replacement and care tips:
  • Support the exhaust with a stand before removing mounts
  • Swap mounts in pairs on the affected section to keep alignment even
  • Use OE-spec rubber insulators for correct durometer, polyurethane is stiffer and can add cabin buzz
  • Light silicone spray helps slide new insulators on, avoid petroleum grease on rubber
  • After fitment, check clearances around heat shields and suspension arms at full droop and ride height

If the system has been upgraded (larger mufflers or pipework), consider fresh mounts and, if needed, an additional bracket to maintain clearance. A WOF or roadworthy inspection will often call out insecure exhaust mounting, so staying ahead of it keeps the Crown quiet, comfy and compliant.

Popular questions about 2012 Toyota Crown exhaust mounts

Do all 2012 Toyota Crown models use the same exhaust mounts?
Most S200-series Crowns use similar rubber insulator mounts, but bracket shapes and the number of hangers can vary by engine and exhaust configuration. When ordering, match by VIN or model code (e.g., GRS200/204) to get the correct insulator and bracket positions.

How long do the factory exhaust mounts usually last?
In typical Australian and New Zealand driving, factory mounts often last 7–12 years, but high heat, oil contamination, or frequent short trips can shorten that. Inspect at routine services and replace at the first signs of cracking, elongation or sagging to prevent exhaust contact and rattles.

Can worn mounts cause exhaust leaks?
Indirectly, yes. If the system sags or twists because a mount has failed, it can stress joints and gaskets, which may lead to leaks over time. Replacing tired mounts helps keep flanges aligned and reduces load on gaskets and sensors.