Parts for your 2015 Toyota Bb-Steering bushes

2015 Toyota bB steering-bushes

Based on Toyota’s technical references for the QNC2# bB (2015 model year), steering bushes are indeed fitted. The Toyota Electronic Parts Catalog (EPC) lists a “BUSH, STEERING RACK MOUNTING” under Steering Gear & Link, and the Toyota Repair Manual for the bB QNC2# details inspection and replacement of the rack-and-pinion electric power steering (EPS) assembly and its mounting bushes. So, steering bushes are relevant on the 2015 Toyota bB.

The steering rack bushes secure the rack to the subframe, keeping it located under load while isolating road harshness and vibration. On the bB’s column-assist EPS system, these rubber mounts help maintain steering geometry, reduce kickback through the wheel, and keep the front end quiet over bumps. When they harden, crack, or deform, the rack can shift slightly, which makes steering feel vague and can introduce clunks.

Tell-tale signs it’s time to look at the bushes include:

• Clunking or thuds over potholes or speed humps
• Vague on-centre feel or wandering on the motorway
• Steering shudder on rough surfaces
• Uneven tyre wear alongside other worn front-end parts

For servicing in Aussie and Kiwi conditions—think corrugations, potholes, and the odd spirited drive—inspect the steering rack bushes every 20,000–30,000 kilometres or at each scheduled service. Look for cracks, flattening, or oil swelling from engine leaks. While the bB’s EPS has no power-steering fluid, general oil contamination can still attack the rubber.

Replacement is straightforward for a pro: safely support the rack, mark positions, remove the rack-mount bolts, swap the bushes, then torque to the Repair Manual specs. Always replace bushes as a pair, and book a wheel alignment afterwards. Some models may require a steering angle neutral point calibration with a scan tool after work on the steering—follow the Toyota RM procedure.

Choosing parts comes down to preference: genuine-style rubber keeps OE comfort and NVH control, while quality polyurethane tightens the steering feel and can better handle heat and harsh roads, at the expense of a touch more feedback. Given many bB front ends also see wear in lower control arm rear bushes and inner/outer tie rods, it’s smart to check those at the same time to restore the lot in one go. Expect typical service life anywhere from 80,000 km to well beyond, depending on use and road quality.

Popular questions

What are the symptoms of worn steering bushes on a 2015 Toyota bB?

Common signs include clunks over bumps, a loose or wandering feel at highway speeds, and a slight knock when turning at low speed. You might also notice uneven tyre wear if other front-end components are tired as well. A quick visual under the car can reveal cracked or squashed bushes.

Do I need a wheel alignment after replacing the bB’s steering rack bushes?

Yes. Any time the steering rack is loosened or removed, a wheel alignment is recommended. It ensures toe is set correctly and the steering wheel sits straight. It’s also a good moment to check and reset the steering angle reference if required.

Rubber or polyurethane bushes—what’s better for the bB?

Rubber keeps factory comfort and isolates noise nicely. Polyurethane offers a firmer, more direct feel and can last longer on rough roads, but may transmit a bit more road texture into the cabin. Either is fine if it’s quality, the choice depends on driving style and NVH preference.