Restore precise steering and quiet the front suspension with the Beck/Arnley Suspension Control Arm and Ball Joint Assembly (P/N 102-7724). This front left lower rearward unit combines the control arm and a pre-attached ball joint into one assembly, giving you a direct replacement built with special attention to OE form, fit, and function. It drops in as an application-specific fit for a wide range of BMW xDrive models, including the 2017-2021 BMW 230I XDRIVE, 2013-2018 BMW 320I XDRIVE, 2014-2018 BMW 328D XDRIVE, 2013-2016 BMW 328I XDRIVE, 2016-2018 BMW 340I XDRIVE, 2017-2020 BMW 440I XDRIVE, and 2017-2021 BMW M240I XDRIVE — see the Buyer's Guide tab for the full 21-application list and engine details.
- Complete assembly: the control arm comes with the ball joint already installed for a complete installation.
- Durable construction: steel, iron, or aluminum construction for durability and rust/corrosion resistance.
- OE match: engineered to match OE form, fit, and function for the listed applications.
- Hardware: new hardware and bushings are included where applicable.
Worn control arm bushings or a failing ball joint can show up as clunking over acceleration or braking, uneven tire wear, or loose, wandering steering. If a worn front left lower rearward arm or its ball joint is the cause, this assembly replaces it.
Interchange: 31126854727 · RK623486 · CMS101309
This part cross-references / interchanges with the following part numbers:
31126854727, RK623486, CMS101309
