Parts for your 2005 Toyota Bb-Strut mounts

2005 Toyota bB strut mounts: what they do and when to replace them

Based on technical references, the 2005 Toyota bB (NCP30/NCP31/NCP35) uses MacPherson struts at the front, which means it absolutely has front strut mounts/strutmounts. This is confirmed by Toyota’s bB NCP30-series Repair Manual (Chassis – Suspension), the Toyota Electronic Parts Catalogue listing the “Front suspension support sub-assembly/insulator” (common p/n variants include 48609-52060, VIN-dependent), and cross-checked against the Scion xB (2004–2006) platform documentation and major aftermarket fitment catalogues (e.g., KYB mount kits for xB/bB). The rear of the bB uses a torsion-beam axle with separate shock absorbers, so there are no rear strut mounts—just upper shock mounts.

On the 2005 Toyota bB, the front strut mounts do more than just hold things together. They secure the top of the strut to the body, cushion road shock with a rubber insulator, and allow the strut to pivot as you steer via an integrated bearing. Good mounts keep the front end quiet, steering light and precise, and tyre wear even—handy on Aussie and Kiwi roads that can serve up the odd pothole or corrugation.

While there’s no fixed replacement interval, many mounts start to tire somewhere between 80,000 and 150,000 km, especially if the bB has done plenty of urban speed bumps or rough country kilometres. Most techs recommend replacing strut mounts whenever front struts are changed.

• Common signs they’re worn: clunks or creaks over bumps, a groan when turning the wheel at low speed, vague or “sticky” steering feel, and scalloped or uneven front tyre wear.
• Best practice: replace mounts in pairs, fit new top nuts, and torque the hardware with the vehicle at normal ride height.
• Always book a wheel alignment afterwards. Changing struts/strutmounts affects camber/caster and toe.
• Inspect related bits while you’re there: coil spring seats, dust boots, bump stops, and the bearing plate. Any play or cracking means it’s time to renew.

DIYers should use proper spring compressors and follow torque specs from Toyota’s workshop manual. For everyone else, a trusted workshop can sort the lot—new struts, fresh strutmounts, and an alignment—so the bB tracks straight, rides quietly, and keeps its tyres happy.

Are strutmounts on a 2005 Toyota bB only at the front?

Yes. The 2005 bB runs MacPherson struts at the front (with strut mounts) and a torsion-beam rear with separate shocks (no rear strut mounts). If you’re hearing noise at the back, you’re likely dealing with upper shock mounts or worn shocks rather than rear strutmounts.

How long do 2005 Toyota bB strutmounts last?

It varies with roads and loads, but many last 80,000–150,000 km. If you notice clunks over bumps, steering that doesn’t self-centre nicely, or tyre wear that’s hard to dial out with alignment alone, the mounts and their bearings may be due.

Do you need an alignment after replacing bB strutmounts?

Absolutely. Any time the front struts or strutmounts are changed, camber and toe can shift. A post-repair wheel alignment ensures proper tyre wear, sharp steering, and safe braking.