Locate the rear wheel and keep it tracking through its intended arc with the Mevotech Supreme Lateral Arm and Ball Joint Assembly, MPN CMS861056. This rear upper rearward unit drops in as a direct-fit replacement for many vehicles, among them the 2006-2015 Lexus IS250, 2006-2015 Lexus IS350 and 2011-2012 Lexus IS F — see the "Vehicles it fits" section for the full list and engine-level details.
- A faster fit: ships with a part-specific nylon locking nut to speed ball joint installation.
- Forged steel construction: built to OE-level tolerances for the load the arm carries.
- Resists corrosion: a protective surface treatment helps guard against rust build-up.
- Rigorous testing: extensive in-house and third-party durability testing backs its performance.
The lateral arm links the wheel knuckle to the chassis and, together with its integrated ball joint, controls wheel movement and helps hold suspension geometry. Premium materials are used on all components. If a worn arm or a loose ball joint is the cause, common signs include clunking or knocking over bumps, uneven tire wear, and loose or wandering handling — diagnose the cause before replacing. Install as directed by the vehicle service procedure and have the alignment checked afterward.
Interchange: 101-7326 · 522-792
1017326 · 522792 · 19307524 · TC7298 · CB64526 · CB64526PR · CB64536 · CB64536PR · CA5082 · 2CB86179 · CAK621829 · 4879053030 · RK621829 · GS861056 · 2606796 · 30030583
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
19307524, 101-7326, TC7298, 522-792, CB64526, CB64526PR, CB64536, CB64536PR, CA5082, 2CB86179, CAK621829, 4879053030, RK621829, GS861056, CMS861056, 2606796, 30030583
Frequently Asked Questions
Which vehicles does the CMS861056 fit?
It fits many vehicles, among them the 2006-2015 Lexus IS250, 2006-2015 Lexus IS350 and 2011-2012 Lexus IS F. See the "Vehicles it fits" section for the full list and engine-level details.
Where does this assembly install?
It is cataloged for the rear upper rearward position. Confirm the application in the "Vehicles it fits" section for your specific vehicle.
Is any hardware included?
Yes. It comes with a part-specific nylon locking nut to speed ball joint installation. Consult the service information for any additional fasteners and correct torque values.
What is the arm made of?
The assembly features forged steel construction built to OE-level tolerances, with a protective surface treatment that helps resist corrosion.
What are signs this part may need replacing?
If a worn arm or loose ball joint is the cause, you may notice clunking or knocking over bumps, uneven tire wear, or loose, wandering handling. Diagnose the cause before replacing.
