Parts for your 2019 Lexus Is-Strut mounts

2019 Lexus IS strut mounts — what’s the go?

Short answer: the 2019 Lexus IS doesn’t use strut mounts. Technical sources including the Lexus IS New Car Features (NCF) for the XE30 series and the Lexus/Toyota Repair Manual (Toyota TIS, Suspension section) specify a double wishbone front suspension and a multi-link rear. Because there’s no MacPherson strut at either end, a strut top mount with a steering bearing simply isn’t part of the design.

Why’s that important? In a MacPherson setup, the strut top mount contains a bearing that lets the whole strut swivel as the wheels steer. On the 2019 IS, the steering axis runs through the upper and lower control arm ball joints, so the damper doesn’t rotate with steering. The top of the shock is held by a rubber “insulator” or mount that isolates noise and vibration, but it’s not a strut mount and it doesn’t carry a steering bearing.

So if someone’s searching for “2019 Lexus IS strut mounts”, they’re likely bumping into generic catalogue language. The equivalent service items on this model are the front shock absorber upper insulators, rear shock mounts, plus the usual wear points like control arm bushes/ball joints and stabiliser (sway) bar links and bushes. Those are the bits that tend to creak, knock, or thump over bumps.

• When chasing a “bad strut mount” noise on this car, start with the front shock upper insulators, sway bar links/bushes, and the upper/lower control arm bushes and ball joints.
• Inspect rubber mounts and bushes at regular services (every 20,000–30,000 km is a good rule of thumb) and replace in axle pairs for even ride and handling.
• Torque suspension fasteners with the vehicle at ride height, and book a wheel alignment after any control arm or major bush work.
• F Sport and cars with Adaptive Variable Suspension (AVS) still use the same basic mounting architecture—no strut mount is fitted, the damper top is a simple insulator.

Technical references: Lexus IS (XE30) New Car Features, Suspension, Lexus IS Repair Manual (Toyota TIS), Suspension—Front/Rear. These documents outline the double wishbone front and multi-link rear layouts for the 2019 model year, confirming that MacPherson struts—and therefore strut mounts—are not used.

Popular questions about 2019 Lexus IS “strut mounts”

Does a 2019 Lexus IS have strut mounts?
No. The 2019 IS runs double wishbone front suspension and a multi-link rear, so there’s no MacPherson strut and no strut-top bearing plate. The upper shock insulator is a simple rubber mount that doesn’t rotate with steering.

What should be checked instead of strut mounts on a 2019 IS?
Check the front shock absorber upper insulators, sway bar links and bushes, and the control arm bushes and ball joints. At the rear, inspect the shock mounts and multi-link bushes. These are the usual sources of knocks, clunks, or squeaks.

Why do parts catalogues list “strut mounts” for this car?
Some catalogues use “strut mount” as a catch-all term for any top shock mount. On the 2019 IS, that part is an insulator without a steering bearing. If in doubt, go by the Lexus Repair Manual naming or genuine part diagrams for correct identification.