Parts for your 2013 Toyota Bb-Ball joints

2013 Toyota bB ball joints: what they do and how to look after them

Based on technical references, the 2013 Toyota bB (QNC20/21/25 series) does use front lower ball joints. The Toyota bB repair manual for the QNC2# platform details MacPherson strut front suspension with a lower control arm and a serviceable front lower ball joint. The Toyota Electronic Parts Catalogue also lists a front lower ball joint for these models, and the related Daihatsu Materia and Subaru Dex workshop manuals show the same front-end layout. So ball joints are absolutely relevant to the 2013 Toyota bB.

The ball joints on a 2013 Toyota bB act like tough little pivot points between the steering knuckle and the lower control arm. They let the front wheels turn and move up and down smoothly over bumps, keeping the steering precise and the tyres wearing evenly. On the bB’s MacPherson strut setup, each front corner relies on a single lower ball joint to hold alignment and handle braking and cornering loads.

As part of regular servicing, it’s smart to have the front ball joints inspected every 20,000–30,000 km or at each service/WO F check. A technician will check for play with the wheel lifted, look for split dust boots, and listen for clunks over bumps. Common signs they’re on the way out include vague steering, a knock over potholes, uneven tyre wear at the inner or outer edges, and a steering wheel that doesn’t feel planted on the motorway.

• If a boot is torn or there’s any free play, replace the joint straight away—once grit gets in, wear speeds up.
• These joints are sealed (no greasing needed). If it’s noisy or loose, replacement is the fix.
• Always torque the ball joint fasteners to spec and fit a new cotter pin where applicable.
• Get a wheel alignment after replacement to protect your tyres and restore crisp steering.

Quality matters here—go for reputable OEM or OE-equivalent joints that meet local standards. In Aussie and Kiwi conditions—heat, rain, corrugations—cheap parts don’t stay tight for long. If one side has obvious play, many workshops recommend doing both fronts to keep handling even. It’s a relatively quick job for a pro, and pairing it with new control arm bushes or sway bar links (if they’re tired) can refresh the front end nicely. That keeps the bB tracking straight, saves tyres, and makes school runs and weekend trips feel a whole lot better from behind the wheel.

Popular questions about 2013 Toyota bB ball joints

How can someone tell if the bB’s front ball joints are worn?

They’ll often hear a dull clunk over speed humps or driveway entries, notice wandering on the motorway, or see uneven tyre wear. A quick check with the wheel off the ground—grabbing the tyre at 6 and 12 o’clock and feeling for play—can point to a loose joint, but a proper workshop inspection is best.

Do the bB’s ball joints need greasing during a service?

No. The factory-style joints are sealed units with a protective boot. If the boot splits or the joint develops play or noise, it’s replacement time rather than a lube job.

Should both front ball joints be replaced together, and is an alignment needed?

Replacing in pairs is a good idea to keep steering feel consistent side to side. After any ball joint work, a wheel alignment is recommended to set camber and toe correctly and protect your tyres.