Parts for your 2006 Lexus Is-Steering bushes

2006 Lexus IS steering-bushes — purpose, checks and when to replace

Based on the Lexus IS (GSE20/USE20) factory Repair Manual and the Toyota/Lexus Electronic Parts Catalogue for the 2006 model year, the vehicle uses a rack‑and‑pinion steering gear mounted to the front subframe via rubber insulators commonly referred to as steering bushes or steering-bushes. These appear in the catalogues as steering gear mounting cushions/insulators retained by brackets, confirming that steering-bushes are indeed relevant and fitted to the 2006 Lexus IS range.

On this model, the steering-bushes secure the rack while soaking up vibration and harshness, so the wheel feels settled on-centre without transmitting every bump through the cabin. They help keep toe and caster steady under load, which means more precise turn-in, better feedback and more even tyre wear over thousands of kilometres.

As they age, the original rubber can soften, crack or compress. Drivers may notice a light knock over sharp bumps, a vague or drifting feel on the motorway, or a shudder when quickly changing direction. Oil contamination (power steering fluid on some variants, or engine oil) can accelerate deterioration, and high heat cycles don’t help either.

• Common signs the bushes are tired:
  • Clunk or thud felt through the floor or column on bumps
  • Steering wheel free play or inconsistent self‑centering
  • Wandering at speed and subtle mid‑corner corrections
  • Feathered or uneven front tyre wear

Inspection is straightforward for a technician: with the front end safely raised, an assistant gently rocks the steering while the rack mounts are observed for movement. Any visible shift at the bush locations, or a gap between bracket and rack housing, calls for replacement. It’s best practice to replace bushes in pairs and torque the brackets to Lexus specifications. If the bushes have been oil-soaked, cleaning the area and resolving the leak first will protect the new parts.

Owners can choose quality OEM‑style rubber for factory NVH, or performance‑oriented polyurethane for a slightly firmer feel. Either way, a wheel alignment is recommended after bush replacement to lock in the steering feel and tyre life. Given the tight packaging on the IS front subframe, professional installation is smart if workshop tools aren’t on hand. Addressing worn steering-bushes brings back that tidy Lexus steering precision that makes daily drives feel effortless.

Popular questions about 2006 Lexus IS steering-bushes

Do all 2006 Lexus IS variants have steering-bushes?
Yes. The 2006 IS uses a rack mounted to the subframe with rubber insulator bushes. While some variants differ in assist type, the rack mounting with bushes/insulators is still present, so inspection and replacement apply across the range.

Will replacing steering-bushes improve steering feel?
In most cases, absolutely. Fresh bushes reduce rack movement under load, sharpening on‑centre feel and improving mid‑corner stability. Many drivers also notice fewer knocks over sharp bumps and more consistent tyre wear over time.

Is a wheel alignment needed after steering-bush replacement?
It’s strongly recommended. Even though the tie rods set toe, disturbing the rack mounts can shift geometry slightly. An alignment ensures the IS tracks straight and the steering wheel sits bang on centre.