Parts for your 2005 Lexus Is-Steering bushes

2005 Lexus IS steering bushes: what they do and when to replace

Based on factory documentation, the 2005 Lexus IS does use steering bushes. The Lexus Technical Information System (TIS) repair manual for the second‑generation IS (GSE2x, first sold in 2005) shows the rack‑and‑pinion assembly mounted to the front subframe with rubber “cushions” or bushings. Toyota/Lexus EPC diagrams for the same model list these as steering gear/rack mounting cushions alongside the mounting brackets and bolts. In other words, while there’s no old‑school “rag joint” bush in the column, the steering rack itself relies on serviceable bushes to isolate vibration and hold the rack precisely in place.

On a 2005 IS, the steering bushes are small but important. They sit between the steering rack and the crossmember, controlling compliance so the rack doesn’t shuffle about when the wheels cop bumps or steering loads. Fresh bushes mean crisp on‑centre feel and confidence mid‑corner, tired ones let the rack move, which can feel like vague steering, a dull clunk over potholes, or a tug in the wheel under acceleration or braking.

As part of routine servicing, a shop will usually check these by gently levering the rack housing while watching the bushings for excessive movement, splits, or oil‑soaked rubber. Engine oil or power steering fluid on the bushes accelerates rubber degradation, so any leaks nearby are worth sorting pronto.

• Common signs they’re due: knocking over corrugations, inconsistent steering weight, tramlining, or alignment that won’t stay put despite good tyres and suspension.
• What to fit: OEM rubber for factory feel and low NVH, or quality polyurethane for sharper response (with a small uptick in vibration).

Replacement is straightforward for a pro: the rack is supported, brackets are removed, the old bushes are swapped, and everything is torqued to spec. It’s smart to do an alignment afterwards, as any change in rack position can nudge toe. If the car’s had the battery disconnected or the wheel taken off the spline, the steering angle sensor may also need a quick calibration on a scan tool.

Tips that keep it sweet for longer:

1. Keep fluids off the rubber—fix seeping cam covers or power steering hoses early.
2. Torque the rack mounts at normal ride height to avoid pre‑loading the bushes.
3. Pair new bushes with good control arm bushes and sound tie‑rod ends for the full benefit.

Driven on decent Kiwi or Aussie roads, many owners see well over 100,000 km before attention is needed, but high heat, fluid exposure, or rough surfaces can bring that forward. If in doubt, a quick inspection during a regular service tells the story.

Popular questions

Do all 2005 Lexus IS models have steering rack bushes?

Yes. Factory literature for the GSE2x platform shows rubber rack‑mount cushions used across the range. Different engines or trims don’t delete them—they’re core to how the rack is mounted and isolated.

How long do the steering bushes typically last?

Anywhere from about 100,000 to 200,000 km is common, but life varies with heat, road quality, and fluid exposure. If the car has oil leaks or sees a lot of sharp bumps, expect earlier wear. Regular inspections catch issues before they affect alignment or tyre wear.

Should they go OEM rubber or polyurethane?

For a daily driver, OEM rubber keeps the plush Lexus feel and low cabin noise. Poly bushes sharpen steering and can last longer, but they may pass a touch more vibration into the cabin. Enthusiasts often pick poly, touring drivers usually stick with OEM.