Parts for your 2004 Lexus Is-Steering bushes

2004 Lexus IS steering bushes — what they do and when to replace them

Steering bushes are absolutely used on the 2004 Lexus IS (XE10 — IS200/IS300/Altezza). The Lexus/Toyota Technical Information System (TIS) chassis section for the XE10 shows the steering gear (rack-and-pinion) mounted to the front crossmember via rubber bushes and clamps, and the Toyota Electronic Parts Catalogue (EPC) for JCE10/SXE10 lists specific “bushing, steering rack” items. Aftermarket technical catalogues for the model also offer replacement rack-mount bush kits, further confirming fitment.

On this car, the steering bushes isolate the rack from the subframe, keeping vibration and noise in check while maintaining precise rack location. As the rubber ages, gets oil-soaked, or cops a hard life on rough Kiwi and Aussie roads, the bushes can squash, crack or go soft. That shows up as a vague on-centre feel, a light clunk over bumps, or a slight steering wheel nibble under throttle and braking.

There’s no fixed service interval, but they’re worth inspecting any time the front end is being checked, especially if the vehicle has 150,000+ km, has had power steering fluid leaks, or the steering feels a bit lazy.

• Tell-tale signs: excess play when rocking the steering wheel at standstill, clunks from low-speed bumps, wandering or tramlining, and visible bush cracking or deformation.
• Inspection tip: with the car safely on stands, have a helper nudge the wheel while watching the rack mounts, excessive rack movement against the crossmember points to tired bushes.
• Replacement choice: OEM-style rubber keeps factory comfort and NVH, quality polyurethane tightens response and durability, but can add a touch more road feel.
• Good practice: replace as a set, torque mounts with the vehicle at ride height, and check the condition of rack brackets and bolts.
• After the job: book a wheel alignment—any small change in rack position or subframe settle can shift toe.

For owners chasing crisp steering without going harsh, fresh OEM bushes paired with correct tyre pressures and a proper alignment usually restore that tidy Lexus feel. Enthusiasts who want sharper turn-in on a twisty commute might prefer polyurethane. Either way, keeping those bushes in good nick protects the rack, steadies the front end, and brings back confidence through the wheel.

Popular questions about 2004 Lexus IS steering bushes

What are the most common symptoms of worn steering rack bushes on a 2004 Lexus IS?
Drivers often report a light clunk over driveway entries or potholes, on-centre vagueness, and a tendency to wander or tramline on coarse-chip roads. You might also see the rack shift slightly on its mounts when someone rocks the steering at idle. If the car has had a power steering fluid leak, the rubber may deteriorate faster.

Should they choose polyurethane or OEM rubber bushes?
For daily driving and maximum refinement, OEM-style rubber is the safe bet—quiet and compliant. If sharper response is the goal and a bit more road texture through the wheel is acceptable, a reputable polyurethane kit offers firmer location and long service life. Many AU/NZ owners are happy with polyurethane on good tyres and a fresh alignment.

Do they need a wheel alignment after replacing the bushes?
Yes, it’s recommended. Even with careful installation, small changes in rack position or subframe settle can nudge toe settings. An alignment locks in straight-ahead and helps the new bushes deliver their best steering feel and tyre wear.