Vehicle Compatibility
- BMW 320i: 2013–2018
- BMW 328d: 2014–2018
- BMW 328i: 2013–2016
- BMW 335i: 2013–2015
- BMW 340i: 2016–2018
- BMW 328i GT: 2014–2016
- BMW 428i: 2014–2016
- BMW 430i: 2017–2019
- BMW 228i xDrive: 2014–2016
Position
- Front Forward Lower Control Arms (Left & Right)
(Also known as tension struts / thrust arms)
[Vehicle Fitment]: Compatible with BMW 228i xDrive/428i xDrive Gran Coupe/435i xDrive Gran Coupe/M235i xDrive 2015-2016, 230i xDrive/430i xDrive/430i xDrive Gran Coupe/440i xDrive/440i xDrive Gran Coupe/M240i xDrive 2017-2020, 320i xDrive 2013-2018, 328d xDrive 2014-2018, 328i GT xDrive 2016-2016, 328i xDrive 2013-2013 (Sedan), 328i xDrive/428i xDrive/435i xDrive 2014-2016, 330i xDrive 2017-2019, 335i xDrive 2013-2015 (Sedan), 340i xDrive 2016-2018
Key Features and Benefits
- Complete Pair (L/R Included)
Replaces both forward lower control arms for balanced suspension performance. - Pre-Assembled Design
Includes integrated bushings/ball joints (varies by design) for faster installation. - Eliminates Brake Shimmy
Fixes steering wheel vibration during braking—a common BMW issue. - Improves Steering Precision & Stability
Restores tight, responsive handling. - Heavy-Duty Construction
Built to handle daily driving, aggressive braking, and long-term wear. - Direct OEM Fitment
Designed for easy bolt-on installation with factory mounting points.
[Installation Position]: Front Lower Forward Left and Right Aspect
[Ideal Replacement]: This Keep watch over arm assembly is replacement for above model’s suspension system, and might allow you to unravel the ones issues: ① clunking noise ② steerage wander ③ uneven tire wear ④ over the top vibration !!!!
Why Replace Forward Lower Control Arms?
On BMW platforms, worn tension struts typically cause:
- Steering wheel shake under braking
- Front-end clunking noises
- Loose or wandering steering
- Uneven tire wear and alignment issues
Replacing them restores smooth braking, proper alignment, and confident handling—aka how a BMW is supposed to feel before life happened.
[Specification]: Condition: Brand New; Subject material: Aluminum; Keep watch over Arm Bushing Included: Yes; Ball Joint Included: No; Pre-Greased: Yes; Accessories Included: As Picture; About Warranty: 1-Year
[Reference Part Number]: 31126854723, 31126854724, CMS101377, MS101377, RK623484, K623484, 521-241, 521241, CMS101378, MS101378, RK623485, K623485, 521-242, 521242
Common Applications
- Suspension refresh on high-mileage BMWs
- Fixing brake vibration and front-end noise
- Front-end rebuilds and maintenance
- Restoring factory ride and handling performance
Technical Highlights
- Position: Front forward lower (left & right)
- Includes: 2 control arms
- Fitment: Direct replacement
- Construction: Heavy-duty steel
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