Help keep your suspension riding smooth and tracking straight with this Dorman control arm, part number 520-554, a front right lower rearward arm that arrives with its ball joint and bushings already installed. It fits many vehicles, among them the 2012-2015 BMW X1, 2008-2013 BMW 125i and 2008-2013 BMW 128i. See the "Vehicles it fits" section for the full list and engine details.
A lower control arm links the steering knuckle to the chassis. It holds the wheel in position while letting it move up and down, and the ball joint provides the pivot point for steering. This Dorman suspension control arm and ball joint assembly is designed as a direct replacement for the original equipment on the listed applications.
- Direct replacement: takes the place of the original assembly in the front right lower rearward position on the listed vehicles.
- Ready to install: the ball joint and bushings come pre-installed, which saves time and labor.
- Tested design: the arm went through Dorman's industry-leading evaluation process, which is aimed at a smooth ride, directional stability and predictable dynamics.
- Corrosion protection: additional coatings provide rust and corrosion resistance.
Signs this part may need replacing include clunking over bumps, loose or wandering steering, uneven tire wear, and vibration felt through the steering wheel. Worn tie rods, struts and other components can cause similar symptoms, so diagnose the cause before replacing any parts.
Interchange: 102-6303 · 623.34030
1026303 · 62334030 · 31122405860 · 31126763700 · 31126770850 · TC1477 · CA4502 · 2CB10048 · 3034001 · RK620130 · GS10109 · CMS10109 · 2605663 · SCA0199P · SRK620130 · 1502015 · X05CJ0862 · JTC1031 · V2071621
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
31122405860, 31126763700, 31126770850, 102-6303, 623.34030, TC1477, CA4502, 2CB10048, 3034001, RK620130, GS10109, CMS10109, 2605663, SCA0199P, SRK620130, 1502015, X05CJ0862, JTC1031, V2071621
Frequently Asked Questions
Which vehicles does this Dorman lower control arm fit?
It fits many BMW models, including the 2012-2015 BMW X1, 2008-2013 BMW 125i and 2008-2013 BMW 128i. Check the "Vehicles it fits" section to confirm your exact vehicle.
Where does part 520-554 install?
It is the front right lower rearward control arm on the listed applications.
What comes with this assembly?
The control arm comes with the ball joint and bushings pre-installed, so you don't need to press them in separately.
What are signs the control arm may need replacing?
Common signs include clunking over bumps, loose or wandering steering, uneven tire wear and vibration. Other worn parts can cause similar symptoms, so diagnose the cause first.
Is anything else needed for installation?
Follow the vehicle service information for the correct fasteners, whether they may be reused, and the torque values. Have the wheel alignment checked after installation.
