Parts for your 2009 Toyota Bb-Exhaust mount

2009 Toyota bB — Exhaust Mounts

Based on Toyota’s Service Information (TIS) for the bB QNC2# series and the Toyota Electronic Parts Catalogue, the 2009 Toyota bB is fitted with exhaust mounts (also called exhaust hangers or exhaust pipe support insulators). These rubber insulators are shown in the factory repair manual under the Exhaust Pipe/Muffler sections and appear in the EPC as multiple supports positioned along the front pipe, centre section and rear muffler.

On the 2009 Toyota bB, the exhaust mounts do the quiet, unglamorous work. They suspend the exhaust under the car and isolate vibration so the cabin doesn’t cop a droning racket. Being rubber insulators, they let the system move a touch as the engine rocks and the pipework expands with heat, but they keep everything centred so the muffler doesn’t thump the floor or the beam axle over bumps. That means less stress on the manifold, catalytic converter and welds, and fewer rattles around town.

As part of regular servicing, they’re worth a look every 10,000–15,000 km. Typical symptoms when they’re on the way out include the tailpipe sitting lower than usual, a dull knock over speed humps, or a rattle at idle when in gear. Visual checks help: cracked or glazed rubber, elongated holes, or shiny/sooty witness marks where the exhaust has kissed a crossmember are all clues.

• Common signs of worn mounts:
  • Rattles at idle or on take-off
  • Tailpipe sitting off-centre or too low
  • Thuds over bumps, exhaust touching heat shields
  • Visible splits or perished rubber

Replacement on the bB is straightforward for a competent DIYer. Let the exhaust cool, support it with a stand, mist the mounts with silicone spray, then lever the old insulators off their pegs. Fit quality OEM-spec rubber insulators, polyurethane options are tougher but can add a bit of NVH. While you’re there, eyeball the metal brackets for cracks and confirm clearances to the rear bumper, beam axle and heat shields. Refit, ensure the system sits naturally without preload, and road-test for knocks. Expect 30–60 minutes on stands, workshops will usually bundle this with exhaust work or major services.

How often? There’s no hard interval, but in Aussie and Kiwi conditions, many bB owners see 5–10 years from genuine mounts. If one has failed, check the rest—replacing the worst pair together (centre and rear) often restores alignment and hushes things up nicely.

• Popular questions

How many exhaust mounts does a 2009 Toyota bB have?
Most 2009 bB models run three to four rubber mounts: typically one near the front pipe, one mid-section and one or two at the rear muffler. Variant and exhaust option can add an extra support.

Can the mounts be replaced at home?
Yes, it’s a moderate DIY job with stands, silicone spray and basic hand tools. The key is supporting the exhaust so the new insulators slide on without fighting the weight, then checking for clearance around the axle, floor and bumper.

Should I choose OEM rubber or polyurethane?
OEM rubber keeps the factory comfort and noise levels. Polyurethane lasts longer and holds shape better but can transmit more vibration into the cabin—fine for firmer setups, less ideal if a quiet ride is the goal.