Parts for your 2015 Lexus Is-Steering bushes

2015 Lexus IS steering bushes — are they a thing?

Short answer: steering bushes aren’t a service item on the 2015 Lexus IS (XE30). The electric power steering (EPS) rack on this model is bolted directly to the front suspension member using rigid brackets and hardware rather than replaceable rubber rack bushes. This layout is detailed in the Lexus Repair Manual (TIS) for the 2015 IS under the Steering – Steering Link section, and the Lexus Electronic Parts Catalogue (EPC) for GSE3#/AVE30 lists brackets/bolts but no separate rack-mount bush kits. Major aftermarket catalogues also skip rack bush kits for 2014–2017 IS, while listing them for the earlier 2005–2013 IS, which backs that up.

Why no steering bushes? With EPS, Lexus chases sharper steering feel and precise motor control. A stiffer, near-solid rack mounting reduces compliance, so the on-centre feel is crisper and the assistance algorithms don’t have to fight rubber deflection. Any noise, vibration or harshness is instead tuned via the subframe, column isolators and suspension bushes elsewhere. If the rack mounting develops play or noise on this model, the fix is usually inspection of the bracketry and fasteners, or replacement of the steering gear assembly itself—rather than pressing in new bushes.

What should owners and techs look at instead? On a 2015 IS, most “looseness” or clunks at the wheel are more likely from:

• Outer and inner tie rod ends (wear and boot damage)
• Front lower control arm bushes and ball joints
• Stabiliser (sway bar) D-bushes and links
• Steering column lower joint and intermediate shaft play
• Subframe alignment and torque of mounting bolts after any suspension work

Practical servicing tips: check for free play with the vehicle on the hoist and the tyres unloaded, listen for knocks over sharp bumps, and re-torque steering rack bracket bolts if they’ve been loosened during other repairs. If there’s noticeable movement of the rack relative to the subframe or a persistent clunk that traces to the housing, follow the Lexus TIS diagnostics—replacement of the rack assembly is the authorised path. Always finish with a wheel alignment and a quick EPS calibration/steering angle reset if required.

Technical references consulted: Lexus Repair Manual (TIS) 2015 IS, Steering – Steering Link, Lexus EPC for 2015 IS (GSE30/AVE30), aftermarket fitment guides showing rack bush kits for 2005–2013 IS but not for 2014–2017 XE30.

Popular questions about 2015 Lexus IS steering bushes

Does the 2015 Lexus IS have replaceable steering rack bushes?
No. The XE30 rack is rigidly mounted to the front subframe with brackets and hardware, and there are no separate, serviceable rack bushes listed in the Lexus parts catalogue. If there’s movement or noise at the rack, inspection focuses on bracket condition, fasteners and, if required, rack replacement.

What should be checked if the steering feels loose or knocks on a 2015 IS?
Start with outer and inner tie rods, front lower control arm bushes, sway bar links and D-bushes, and the steering column lower joint. Confirm subframe and rack bracket bolt torque. If those pass, follow Lexus TIS checks for the EPS rack before condemning the assembly.

Can aftermarket polyurethane rack bushes be fitted to sharpen the steering?
Not on the 2014–2017 IS. Popular bush kits exist for the older 2005–2013 generation, but not for the XE30. Attempting to retrofit non-listed bushes can introduce NVH and misalignment issues, stick with the OE-style rigid mounting and address handling with alignment, tyres and suspension bush upgrades instead.