Parts for your 2011 Lexus Is-Steering bushes

2011 Lexus IS steering-bushes

Steering-bushes are fitted to the 2011 Lexus IS (XE20 series). Lexus/Toyota technical sources back this up: the Lexus Technical Information System (TIS) repair manual for the GSE2x/USE2x chassis details a rack-and-pinion setup mounted to the subframe with rubber insulators/cushions, and the Toyota Electronic Parts Catalogue lists “Cushion, Steering Gear” and related support hardware for this model range. That means steering-bushes (often called rack mount bushes or gear cushions) are absolutely relevant to this car.

On this IS, the steering-bushes isolate the rack from the front subframe, cutting down vibration and sharpening steering feel. Over time, heat, oil exposure and big Aussie/Kiwi potholes can soften or crack the rubber. When that happens, the steering can feel a bit vague on centre, the wheel may shimmy over bumps, or there can be a clunk as the rack shifts under load.

For servicing, it’s smart to have the bushes inspected whenever the front end is on the hoist—think every 20,000–30,000 km or during routine suspension checks. A quick visual for cracking, oil swelling, or excessive rack movement while a helper nudges the wheel is usually enough to flag issues. If the vehicle’s had a power steering fluid leak in earlier hydraulic variants or exposure to engine oil, pay extra attention, as petroleum products accelerate rubber degradation.

Replacement is straightforward for a pro: support the rack, remove the brackets, swap the bushes, and torque everything to spec before a wheel alignment. Some racks may use differently shaped left/right bushes, so matching orientation matters. Going with quality OE-style rubber keeps factory refinement, firmer aftermarket polyurethane can tighten response but may pass a touch more vibration into the cabin—great for enthusiasts, less so if comfort is the priority.

• Common signs to watch for:
  • Steering clunk over speed humps
  • Wandering or tramlining at highway speeds
  • Uneven tyre wear that isn’t fixed by alignment
• Post-replacement must-do: a proper wheel alignment to protect tyres and restore straight-ahead feel.

Look after the steering-bushes and the IS rewards with the crisp, confidence-inspiring front end it’s known for.

Popular questions about 2011 Lexus IS steering-bushes

Are steering-bushes on the 2011 IS serviceable separately from the rack?

Yes, the rack mount bushes are separate components on this model. They can be replaced without changing the entire steering rack, provided the rack housing and brackets are in good condition. Some aftermarket kits include both bushes and new brackets to simplify the job.

How do you know it’s the bushes and not the tie rods or control arm bushes?

With the car on a hoist, a technician can observe the rack while the steering is gently oscillated. If the rack body shifts relative to the subframe, it points to the mount bushes. Free play at the wheels when the rack stays solid suggests inner/outer tie rods, while braking clunk or caster change over bumps often traces to lower control arm bushes or ball joints.

Should I choose polyurethane or OE rubber bushes?

OE rubber keeps the Lexus-like refinement and is ideal for daily drivers. Polyurethane tightens steering response and can last longer, but may add a little more vibration and road feel. For mixed city-highway use, quality OE-style rubber is a safe bet, for spirited weekend runs or track days, poly can be worthwhile.