Parts for your 2009 Toyota Bb-Strut mounts

2009 Toyota bB strutmounts — what they do and when to replace them

Technical sources confirm the 2009 Toyota bB does use strutmounts. The Toyota bB (QNC20/QNC21 series) front suspension is a MacPherson strut design, documented in the Toyota Repair Manual and Toyota Electronic Parts Catalog, which lists the “Front Suspension Support Sub-Assembly” (the strut mount/top mount). Aftermarket fitment catalogues from major suspension brands also list dedicated top mounts for the 2009 bB, matching its platform mates (Daihatsu Coo/Subaru Dex). So, yes — strutmounts are fitted to this vehicle.

On a 2009 Toyota bB, strutmounts sit at the top of the front struts, bolting the strut to the body. They do two big jobs: cushion noise and vibration through a rubber insulator, and let the strut rotate smoothly when steering via an integrated bearing. Good mounts keep the front end quiet, the steering feel consistent, and alignment stable. When they’re tired, drivers can cop clunks over bumps, steering that sticks or “memory steers” back late, vague handling, and uneven tyre wear.

There’s no fixed replacement interval, but in Aussie and Kiwi conditions many owners see wear anywhere from 80,000–150,000 km, especially if the car lives on coarse-chip seal or deals with kerbs and potholes. A smart move is replacing the strutmounts whenever front struts are replaced, or sooner if symptoms show up.

What to look and listen for:

• Knock or creak from the top of the strut over speed humps or rough roads
• Notchy steering or delayed return-to-centre after a turn
• Visible cracking/splitting in the top mount rubber
• Feathered or uneven tyre wear and wandering at highway speeds

Service tips for a 2009toyotabb strutmounts replacement:

• Replace in pairs for consistent steering feel left to right
• Use quality mounts with the bearing included, pair them with new dust boots and bump stops
• Torque the top nut and mount fasteners to spec from the Toyota manual — over-tightening can crush the bearing
• Book a wheel alignment straight after any front suspension work
• At every service, visually inspect mounts for perished rubber and listen for top-mount noises on a test drive

There’s not much to “maintain” on strutmounts beyond inspections — they’re largely fit-and-forget until wear shows. Keeping tyres correctly inflated, avoiding hard hits, and nipping issues early will keep the bB’s front end tidy and quiet.

Does a 2009 Toyota bB have strutmounts?

Yes. The bB runs MacPherson struts up front, and those struts bolt to the body via strutmounts (top mounts) with an integrated bearing. They’re essential for noise isolation and smooth steering.

How often should 2009toyotabb strutmounts be replaced?

There’s no set schedule. Inspect at each service, many owners replace mounts with the front struts around 80,000–120,000 km, or earlier if there are knocks, binding steering, or cracked rubber.

Can worn strutmounts cause a WOF/RWC fail?

They can. Excessive play, perished rubber, or noisy/binding top bearings can affect steering and suspension integrity. That can trigger a fail at WOF (NZ) or RWC (AU) until repaired and aligned.