Beck/Arnley Suspension Control Arm and Ball Joint Assembly P/N:102-8161
Replace a worn front left lower control arm and its ball joint in one job with the Beck/Arnley control arm 102-7662, built to match OE form, fit and function. It fits many vehicles, among them the 2017-2021 BMW 230i, 2017-2021 BMW M240i and 2017-2020 BMW 430i; see the Buyer's Guide tab for the full list.
The lower control arm connects the wheel's steering knuckle to the chassis. It lets the wheel move up and down with the suspension while holding it in position. The ball joint is the pivot that lets the knuckle move as the suspension travels and the wheels steer. Beck/Arnley supplies this control arm and ball joint assembly as one unit, so both are replaced at the same time.
Signs this part may need replacing include clunking or knocking over bumps, loose or wandering steering, uneven tire wear, or visible play in the ball joint. Other suspension or steering parts can cause the same symptoms, so inspect the system before replacing parts.
Interchange: 31126855741 · 62234105 · 522881 · CB14324 · RK621977 · CMS101309
This part cross-references / interchanges with the following part numbers:
What does a front left lower control arm do?
It connects the front left wheel's steering knuckle to the chassis and lets the suspension move up and down. The ball joint provides the pivot for suspension travel and steering.
Does the ball joint come with this control arm?
Yes. Beck/Arnley supplies 102-7662 with the ball joint, so the arm and the joint are installed together as one part.
Will it fit my 2017-2021 BMW 230i?
Yes, it is listed for the 2017-2021 BMW 230i. It is also listed for the 2017-2021 BMW M240i and the 2017-2020 BMW 430i. Check the Buyer's Guide tab to confirm your exact vehicle.
What are signs of a worn lower control arm or ball joint?
Common signs are clunking over bumps, loose or wandering steering, uneven tire wear, and play in the ball joint. Other parts can cause these symptoms, so diagnose the cause first.
What should I know when installing this control arm?
Follow the vehicle's service information for the correct fasteners, torque values and whether the original fasteners may be reused. Have the wheel alignment checked after installation.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.