Parts for your 2018 Toyota Hiace-Steering bushes

2018 Toyota HiAce steering bushes — what they do and when to replace them

Technical documentation for the H200-series HiAce (the 2018 model falls within this generation) confirms the van uses a hydraulic, rack-and-pinion steering gear that’s mounted to the front crossmember with rubber steering gear mounting bushes. Toyota’s service/repair literature and the Toyota Electronic Parts Catalogue list these as steering gear mounting “bushes/cushions,” and major aftermarket technical catalogues for Australia and New Zealand (e.g., Nolathane and SuperPro) publish specific rack-mount bush kits for 2005–2019 HiAce models. That means steering bushes are indeed fitted and relevant on a 2018 Toyota HiAce, there’s no idler-arm system on this model, so no idler-arm bushes to worry about.

On a 2018 HiAce, the steering bushes clamp the steering rack securely to the subframe while isolating vibration. They keep the rack centred, help the van track straight, and cut down noise and harshness that would otherwise be fed through the steering wheel. Over time, rubber can perish, crack, or swell if contaminated by oil or power steering fluid, and once that happens, the rack can shift under load. That’s when the steering can feel vague, knock on take-off or over corrugations, or the van might wander on the open road.

Good servicing practice is to inspect the steering bushes every 20,000 km or 12 months, and any time the front end is apart for brakes, shocks, or an alignment. They deserve extra attention if the van works hard, tows, or spends its life on rutted roads. Look for splits, softness, or offset/racked positioning, also check for fluid leaks that can accelerate bush failure. If in doubt, replace in pairs.

Replacement is straightforward for a qualified tech: support the rack, remove the mounting bolts and old bushes, seat the new bushes square in the brackets, and torque the hardware to spec from the workshop manual. Always book a wheel alignment afterwards. Sticking with quality OEM-style rubber is quiet and compliant, polyurethane options add durability and sharper steering feel, with a mild uptick in noise/harshness some drivers won’t notice once the van’s loaded. Either way, fresh bushes restore steering precision, tame shimmy, and help protect tyres from scrub and feathering.

• Common symptoms: clunks over bumps, vague on-centre feel, tramlining/wander, uneven tyre wear, alignment that won’t “hold”.
• Helpful tip: fix any power steering fluid leaks first—oil-soaked rubber bushes won’t last.

Popular questions about 2018 Toyota HiAce steering bushes

How often should steering bushes be replaced on a 2018 HiAce?

There’s no fixed kilometre limit, but checking them every service (about every 10,000–20,000 km) is wise. Many last well past 100,000 km in easy use, heavy loads, rough roads, or fluid leaks can shorten that. Replace when there’s cracking, softness, or movement at the rack mounts, or if you’re chasing steering knock and wander.

Do I need a wheel alignment after changing the steering bushes?

Yes. Even though you’re not altering tie-rods directly, fresh bushes change how the rack sits under load. An alignment makes sure toe and steering wheel centring are spot on, protecting tyres and restoring straight-line stability.

Are polyurethane bushes too harsh for daily HiAce use?

Not necessarily. Poly adds durability and sharper response, which suits vans that carry tools or spend time on coarse-chip. You may notice a touch more road feel at the wheel, but most owners find the trade-off acceptable—especially if tyres and shocks are in good nick.