Parts for your 2010 Toyota Bb-Strut mounts

2010 Toyota bB strut-mounts — fitment, purpose and service tips

Technical sources confirm the 2010 Toyota bB (QNC2# series) uses front MacPherson struts with dedicated strut-mounts. Toyota’s New Car Features (NCF) for the QNC platform and the Toyota Electronic Parts Catalogue list a “front suspension support sub‑assembly” (the strut-mount with bearing). Major aftermarket catalogues (e.g., KYB and Monroe application guides) also specify front strut-mounts for 2005–2016 bB models, while the rear is a torsion-beam with separate shock absorbers, so no rear strut-mounts are used.

On this bB, the strut-mounts do two key jobs. First, the rubber insulator isolates vibration and harshness from the body, keeping the cabin quieter over coarse-chip Kiwi and Aussie roads. Second, the integrated bearing on the front mount lets the strut rotate smoothly as the steering turns, helping steering feel and return-to-centre. They also hold the top of the strut in position, which plays into front-end geometry and tyre wear.

Service-wise, strut-mounts aren’t a fixed-interval item, but they should be inspected at every service or at least every 20,000 km/12 months, especially if the bB sees rough roads or speed bumps. Common clues they’re on the way out include:

• Clunks or knocks over bumps
• Creaking when turning the wheel at low speed
• Wandering steering, vague turn-in, or tramlining
• Uneven front tyre wear or unstable wheel alignment
• Split or perished rubber around the mount

Best practice is to replace front strut-mounts in pairs, ideally when fitting new front struts or springs. Use quality OE-equivalent mounts with the bearing included, torque all hardware to Toyota specs, and finish with a proper wheel alignment. During the job, check the strut boots, bump stops and spring seats, they’re inexpensive while it’s all apart and can save a second tear-down later.

Because the rear of the 2010 bB runs separate shocks, there are no rear strut-mounts to worry about—just standard upper shock bushes. In coastal areas, look for corrosion around the front towers and hardware under the bonnet, as that can accelerate mount wear. Kept in good nick, fresh strut-mounts sharpen the steering, hush cabin noise, and protect those front tyres across Aussie and NZ kilometres.

Popular questions about 2010 Toyota bB strut-mounts

Do both front and rear of a 2010 bB use strut-mounts?
The front does—it's a MacPherson strut setup with a top mount and bearing. The rear is a torsion-beam with separate shocks, so no rear strut-mounts. Rear shocks use simpler upper and lower bushes instead.

How often should front strut-mounts be replaced?
There’s no set interval. Many owners change them when replacing front struts, often somewhere between 120,000 and 180,000 km depending on roads and loads. Replace sooner if there are noises, steering roughness, or visible rubber deterioration.

Can worn strut-mounts cause a WOF/roadworthy fail or tyre wear?
Yes. Excess play or noisy mounts can trigger a fail, and sloppy mounts can upset front alignment, leading to feathering or uneven tyre wear. If in doubt, get an inspection and alignment check.