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Parts for your 2013 Toyota Bb-Exhaust mount
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2013 Toyota bB exhaust-mount: what it does and when to replace it
The 2013 Toyota bB does use exhaust mounts (also called exhaust hangers or “insulator, exhaust pipe support” in Toyota documentation). This isn’t a niche part—it's standard kit. Toyota’s Electronic Parts Catalogue for bB QNC20/QNC21 lists multiple rubber insulators supporting the front pipe, centre section and rear muffler, and the Toyota service manual procedures for exhaust removal/refit call out the exhaust pipe support insulators specifically. Aftermarket catalogues that mirror OEM fitment also list dedicated rubber hangers for the 2013 bB, confirming the application.
On this model, the exhaust mounts suspend the exhaust system from the body while letting it move slightly as it heats, cools and vibrates. That flexible support keeps the tailpipe centred in the bumper cut-out, prevents the pipe and muffler from knocking on the subframe, and isolates cabin noise. Without healthy mounts, the bB can drone, rattle and even melt bumper trim if the tailpipe sags.
In everyday servicing, exhaust mounts are a quick check that pays off. Rubber lives a hard life right under the car—heat, road grime and oil can harden, crack or elongate the insulators over time. A visual inspection at each service interval (or roughly every 10,000–15,000 kilometres) is sensible. If any mount looks perished, split, glossy-hardened, or the tailpipe sits low or off-centre, replacement is on the cards.
Typical signs the 2013 bB’s mounts are due:
- Rattling or knocking over bumps, especially from the rear
- Droning or new vibrations at certain revs
- Tailpipe drooping or sitting closer to the bumper
- Exhaust tapping the body or crossmember on startup/shutdown
Replacement is straightforward: support the exhaust, lubricate the old rubbers (silicone spray works a treat), lever them off the pegs, then slide on fresh insulators. On the bB there are usually three to four mounts depending on 2WD/4WD and muffler spec, check by VIN to match the exact insulator types and any brackets. Stick with quality OEM-style rubber, polyurethane hangers are available but can add harshness on a small cabin like the bB’s. After refit, confirm clearances to heat shields and bumper, and snug any hanger bracket fasteners to the workshop manual spec.
Workshop tips for Aussie and Kiwi owners:
- Inspect mounts any time the car is up for tyres, brakes or an oil service.
- Replace in pairs or as a full set if they’re the same age—consistency keeps the system aligned.
- Avoid getting oils/solvents on new rubbers, they’ll degrade faster.
With fresh mounts, the 2013 Toyota bB will feel quieter, tidier and less buzzy on the daily commute.
FAQs
How many exhaust mounts are on a 2013 Toyota bB?
Most 2013 bB models run three to four rubber insulators: typically one near the front pipe, one at the centre section and one or two at the rear muffler. Variations depend on 2WD vs 4WD and the exact muffler/trim level. A quick look under the rear bumper and mid-floor will confirm your count.
What are the common signs the bB’s exhaust mounts need replacing?
Look for rattles or knocks over bumps, a droning note at certain revs, a tailpipe that sits low or skewed, or scuff marks where the exhaust has touched the body. If a mount is visibly cracked, stretched or rock-hard, it’s due.
Can polyurethane exhaust mounts be used on a 2013 bB?
They can, and they’ll hold the system very firmly, but they may transmit more noise and vibration into the cabin. For daily use on Aussie and NZ roads, most owners stick with OEM-style rubber for the best comfort and refinement.
