Parts for your 2006 Toyota Bb-Strut mounts

2006 Toyota bB strut-mounts: what they do and when to replace them

Strut-mounts are absolutely relevant to the 2006 Toyota bB. Technical references including the Toyota Electronic Parts Catalogue (EPC) for the QNC20/QNC21 series and Toyota’s workshop literature specify a MacPherson front suspension that uses a “front suspension support” (strut top mount). Major aftermarket catalogues (e.g., KYB and Monroe) also list dedicated strut-mounts for the 2006 bB. So, yes—this model runs front strut-mounts.

On the 2006 bB, strut-mounts sit at the top of the front struts, bolting the strut assembly to the body. They do three big jobs: isolate noise and vibration so the cabin stays quiet, provide a bearing surface so the strut turns smoothly with the steering, and help maintain proper geometry under load. When they’re tired, drivers often notice extra road noise, a dull clunk over bumps, vague or wandering steering, or notchy steering feel at low speeds.

Because the bB uses MacPherson struts up front, these mounts cop a fair bit of work. They’re not really a serviceable item, but they should be inspected during routine servicing—especially from 80,000–100,000 km onward, or any time front shocks/struts are being replaced. Most workshops recommend doing strut-mounts in pairs to keep the steering and handling balanced.

• Typical wear signs on a 2006 bB strut-mounts:
  • Clunks or creaks over speed humps and potholes
  • Steering that sticks or feels “lumpy” when parking
  • Feathered or uneven front tyre wear
  • Visible cracking or separation of the rubber in the top mount

When replacing, it pays to use quality mounts with integrated bearings matched to the bB’s strut design. Under the bonnet, access is straightforward, but the coil spring preload means proper spring compressors and safety procedure are a must. Fit new self-locking nuts where specified, torque everything to spec, and book a wheel alignment straight after—changing strut-mounts can shift camber and toe. Watch mount orientation marks (often “OUT” or arrows) so the bearing sits true to the knuckle angle, and check the upper spring insulator and dust boots while you’re there.

• Handy servicing tips for bB strut-mounts:
  • Replace mounts whenever fitting new front struts
  • Avoid kerb strikes—impacts can bruise the bearing and rubber
  • Listen for early noises after heavy loads or rough-road trips

FAQs

How long do strut-mounts last on a 2006 Toyota bB?
In typical Aussie and Kiwi conditions, many last 100,000–160,000 km, but life varies with road quality, loads, and tyre/wheel choices. If there’s clunking, steering notchiness, or odd tyre wear, it’s time for an inspection.

Should strut-mounts be replaced with the struts?
Yes. Doing mounts with new struts saves labour, prevents early noises, and keeps steering feel consistent. On an older bB, pairing them is smart maintenance.

Do you need a wheel alignment after replacing strut-mounts?
Absolutely. Any time the strut assembly comes out, camber and toe can shift. A post-job alignment keeps the bB tracking straight and protects tyre life.