Parts for your 2012 Lexus Is-Suspension bushes

2012 Lexus IS suspension bushes — what they do and how to look after them

Technical sources including the Lexus IS (GSE20/GSE21/GSE25) Repair Manual, the Toyota Electronic Parts Catalogue, and aftermarket catalogues from Nolathane, SuperPro and Whiteline all show the 2012 Lexus IS uses multiple suspension bushes. The front double‑wishbone setup relies on pressed‑in arm bushes (including a hydro‑filled rear lower arm bush), while the rear multi‑link assembly features control arm, toe link and subframe mounting bushes.

These bushes are the quiet achievers. They isolate road harshness and vibration, let the arms articulate smoothly, and keep alignment angles steady when the chassis is loaded up. Good bushes mean sharp turn‑in, stable braking and even tyre wear, tired bushes mean clunks, shimmy on rough chip, wandering on the motorway and feathered tyres.

As part of regular servicing, it’s smart to inspect the bushes every 10,000–15,000 km or annually. Look for cracked rubber, split hydro‑bushes weeping fluid, torn sleeves, and excessive arm movement under a pry‑bar. Many owners notice front lower control arm rear bushes sag or leak first, rear subframe bushes can also soften with age, adding a thud over sharp bumps.

Replacement options include genuine rubber bushes (quiet, OE feel) or polyurethane (sharper response, a touch more NVH). On this model, some shops replace the entire control arm assembly — it can be cost‑effective and saves press time — while others press in upgrade bushes. Whichever way, torque fasteners at normal ride height to avoid preloading the rubber, and book a four‑wheel alignment straight after.

• Replace bushes in axle pairs to keep handling balanced.
• Expect a few hours’ labour for front arm bushes, allow extra for seized hardware.
• Renew self‑locking nuts and corroded bolts per the Lexus manual.
• Keep oils and solvents off rubber, a quick soap‑and‑water clean is fine.
• If fitting polyurethane, re‑grease with the right lube at recommended intervals.

Driven on Aussie and Kiwi roads, well‑maintained bushes typically last 80,000–150,000 km, but heavy city braking, rough rural routes or track days will shorten that. If the IS starts to feel floaty or tramlines on ruts, it’s time for a bush check.

Popular questions about 2012 Lexus IS suspension bushes

Does the 2012 Lexus IS actually have suspension bushes?
Yes. Factory literature (Lexus repair manual and Toyota parts catalogue) and reputable bush manufacturers list multiple front and rear bushes for the XE20‑series IS, including control arm and subframe bushes.

How long do the bushes last, and what are the signs they’re worn?
Many last 80,000–150,000 km, but life varies with driving and climate. Signs include clunks over potholes, vague steering, braking shimmy, and uneven tyre wear. A quick workshop inspection with a pry‑bar usually confirms play or torn rubber.

Should they choose OEM rubber or polyurethane?
OEM rubber keeps the Lexus quiet and refined. Polyurethane tightens steering feel and resists deflection, great for spirited driving, but may add a hint of vibration. For a daily driver, fresh OEM‑style bushes are a safe bet, for sharper response, quality poly with proper lubrication works well.