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Parts for your 2015 Toyota Bb-Exhaust mount
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2015 Toyota bB exhaust mount — what it is, why it matters, and when to replace it
Yes, the 2015 Toyota bB uses exhaust mounts. Toyota’s Electronic Parts Catalogue for the QNC2# series lists “Insulator, Exhaust Pipe” (commonly the rubber hanger insulators), with typical part references such as 17565‑B1010. Toyota’s Repair Manual procedures for the bB also call out checking and refitting the exhaust pipe supports during removal/installation. Given the bB’s shared platform with the Daihatsu Coo/Materia, the same style of rubber exhaust hangers appears across those catalogues too. So, exhaust mounts are very much relevant on this vehicle.
On a 2015 bB, the exhaust mounts do a simple but critical job: they hold the exhaust up while isolating vibration and allowing movement. The rubber insulators let the system expand with heat, flex over bumps, and sit where it should so the muffler doesn’t knock on the body, crossmember, or rear beam. When they’re healthy, the cabin is quieter and the whole exhaust lives a less stressful life.
As part of regular servicing, it’s smart to give the hangers a quick look. Perished rubber, visible cracks, a sagging tailpipe, or a muffler that’s sitting off‑centre are all clues the mounts are on the way out. Rattles on start‑up or over corrugations, thumps when shifting from Reverse to Drive, or a melted bumper edge near the tip can also point to tired mounts putting the exhaust out of position.
There’s no set kilometre interval—these are replaced on condition—but in Aussie and Kiwi climates with heat, UV, and coastal air, they often harden or crack by the 5–10 year mark. When it’s time, most owners swap the rear and mid hangers together so the system stays level. Genuine-style rubber insulators sized for the bB’s hanger pins are best, universal hangers can work, but the right length and durometer make a big difference to fit and NVH.
- Inspect every service or before long trips, especially if the bB sees rough roads.
- Support the muffler with a jack or strap before removing any hanger.
- Use silicone spray and dedicated hanger pliers to slip rubbers off cleanly.
- Replace torn, cracked, shiny-hardened, or stretched rubbers as a set.
- After refit, check clearances around the sway bar, beam axle, heat shields, and bumper.
Following Toyota repair guidance for fastener sequences and any bracket torque is worth it, a few careful checks now will save chasing exhaust knocks later.
Popular questions about 2015 Toyota bB exhaust mounts
How many exhaust mounts does a 2015 Toyota bB have?
The typical QNC2# bB uses several rubber insulators from mid‑pipe to rear muffler—usually three to four depending on engine and market spec. There’s often a mid hanger near the centre pipe and multiple at the rear section to keep the muffler aligned.
What are the signs an exhaust mount needs replacing?
Look for rattles over bumps, a thud at start‑up/shut‑down, a droopy tailpipe, or the muffler sitting off‑centre. Cracked or glossy‑hardened rubber, torn edges, or polished hanger pins (from excess movement) are clear replacement cues.
Can universal hangers be used on a bB?
They can, but choose dimensions that match the bB’s pin spacing and rod diameter, and a rubber hardness close to OEM. Vehicle‑specific insulators (such as those cross‑referenced from Toyota EPC listings like 17565‑B1010) usually give the best fit and least vibration.
