Parts for your 2013 Toyota Mark x-Steering bushes

2013 Toyota Mark X steering bushes: purpose, upkeep, and when to replace

Based on Toyota’s technical literature, steering bushes are used on the 2013 Toyota Mark X (GRX130/GRX133). The Toyota Electronic Parts Catalogue (EPC) for the GRX130/133 under “Steering Gear & Link” shows the rack mounted to the front crossmember via rubber insulators (labelled “Insulator, Steering Gear,” commonly in the 45517–xxxxx family) with matching clamps. The Toyota Repair Manual for the platform likewise specifies inspection and replacement of these insulators, confirming they’re a service item on this model.

On the Mark X, these bushes sit between the rack-and-pinion housing and the subframe. Their job is to keep the steering rack securely located while soaking up vibration and road shock. Good bushes help deliver that tidy, direct steering feel Mark X owners expect, and they protect the rack from harsh impact loads that can lead to premature wear.

Over time, rubber insulators can harden, crack, deform, or swell (especially if exposed to oil). When they’re on the way out, the car may feel a bit vague on-centre, clunk on bumps, or tug under braking and acceleration as the rack shifts slightly. It can also contribute to tramlining and uneven tyre wear.

• What to look for during servicing: any free play of the rack on the mounts, perished or oil-soaked rubber, and witness marks where the rack has been moving in the cradle.
• When to replace: if there’s detectable movement, visible damage, clunks through the column, or if alignment won’t stay put.

Replacement is straightforward for a professional: the rack is supported, clamp bolts removed, old insulators slid out, and new bushes installed in the correct orientation before torquing the clamps to spec. Some variants may need the front undercovers removed or the subframe slightly lowered for access. After the job, a wheel alignment is recommended, and on EPS-equipped cars a steering angle neutral position check may be required with a scan tool.

To maximise bush life, fix any power steering fluid leaks promptly (where fitted) and keep the underbody clean. Quality OEM rubber insulators usually provide the best balance of comfort and control, polyurethane options can sharpen response but may add a touch of noise and vibration. With regular checks at service intervals (or every 20,000–30,000 kilometres), owners can stay ahead of wear and keep the Mark X steering tight and confidence-inspiring.

FAQs

Does the 2013 Mark X have separate, replaceable steering rack bushes?
Yes. Toyota identifies them as “Insulator, Steering Gear” in the EPC for GRX130/GRX133. They’re serviceable without replacing the entire rack, provided the rack itself is in good condition.

How long do steering bushes typically last on a Mark X?
It varies with driving and road conditions, but many see 80,000–150,000 kilometres. Frequent rough-road use, fluid leaks, or heat/age can shorten that interval. Inspect them during routine servicing and replace at the first signs of movement or deterioration.

Do you need a wheel alignment after replacing steering bushes?
It’s best practice to perform an alignment afterwards. Even small changes in rack position can nudge toe settings. For EPS cars, a steering angle sensor check/reset may also be required.