Parts for your 2014 Toyota Bb-Exhaust mount

2014 Toyota bB exhaust mounts — purpose, checks, and when to replace

Yes, the 2014 Toyota bB uses exhaust mounts. Toyota’s Electronic Parts Catalog (EPC) for QNC20/QNC21 models lists several “Insulator, Exhaust Pipe Support” positions, and the Toyota Repair Manual’s exhaust section shows the muffler and pipes suspended by rubber hangers. Those rubber mounts isolate vibration, keep the exhaust sitting at the right height, and stop it from knocking on the body.

On the bB, the exhaust mounts are simple but crucial bits of rubber that live between the exhaust brackets and the underbody hooks. They flex to soak up engine movement and road bumps, so the cabin stays quiet and the pipes don’t stress the flanges or bang over speed humps. Because they’re rubber, they harden, crack, or stretch with heat, age, and road grime—especially on city-driven cars that cop lots of short trips and heat cycles.

As part of regular servicing, it’s sensible to check the mounts every 10,000–15,000 km or 12 months. A quick visual looks for perished rubber, splits, or a mount that’s gone soft and elongated. If the tailpipe sits wonky, the exhaust rattles over bumps, or there’s a new drone in the cabin, odds are one or more mounts are tired.

Replacement is straightforward: support the exhaust so it doesn’t drop, lubricate the hangers with silicone spray, then slide the old insulators off and fit OE-quality replacements. Using the correct-spec “insulator” matters—hard aftermarket mounts can transmit vibration, while cheap soft ones won’t hold the height. After fitting, check clearances to the rear bumper, heat shields, crossmember, and suspension arms, and make sure the tips are centred so they don’t melt the bumper on a hot day.

While you’re there, give the other exhaust hardware a once-over—brackets, heat shields, and flange joints. If a mount failed because the system was misaligned, refit the pipes loosely, seat the mounts, then tighten the joints so everything hangs naturally. That keeps stress off the flanges and helps the new mounts last longer.

• Common symptoms: thuds or tapping from the rear, droopy tailpipe, excessive vibration at idle, visible cracks in the rubber.
• Typical count: usually three to four rubber insulators on the 2014 bB, depending on engine and exhaust layout.
• Tip: in coastal areas, check more often—salt and heat age the rubber faster.

Popular questions about 2014 Toyota bB exhaust mounts

How many exhaust mounts are on a 2014 Toyota bB?
The bB typically runs three to four rubber insulators: one near the front/centre pipe, one mid-span, and one or two at the rear muffler. Exact count can vary slightly by engine and market spec, but Toyota’s EPC for QNC20/QNC21 shows multiple support points to keep the system aligned and quiet.

What are the signs the mounts need replacing?
Look for a sagging or off-centre tailpipe, dull knocks over bumps, or a new buzz/drone at certain revs. On inspection, the rubber may be cracked, glazed, or stretched. If the exhaust has started touching a heat shield or the bumper, the mounts are likely past it.

Can a home mechanic replace them?
Yes, if the exhaust is cool and properly supported. A jack and stands, silicone spray, and basic hand tools usually do the trick. The key is to support the muffler so it doesn’t stress the joints, and to use OE-style insulators so NVH stays civil. If bolts are rusty or the system is misaligned, it’s worth letting a workshop handle it.