Front Stabilizer/Sway Bar - 2011 528i

The 2011 BMW 528i F10 utilizes front stabilizer bar BMW part number 31 35 6 850 877 (superseding 31 35 6 783 187) for standard suspension applications. When pulling from junkyards, target 2011-2016 F10 sedans, 2011-2017 F11 wagons, or 2010-2017 F07 GT models, but always measure bar diameter with calipers: standard suspension uses 26.5mm, while M Sport packages require the thicker 29mm variant. Inspect critical failure points at the tight-radius bends near the end links, where stress cracking appears as dark rust lines. During installation, replace polypropylene bushings (31 35 6 774 022) rather than reusing compressed units, and lubricate with silicone paste only—petroleum grease degrades the rubber compound. Torque the 16mm end-link nuts to 65 Nm and the aluminum bracket bolts to 20 Nm to prevent galling. If the stamped Lemfender casting number 31356783737 is visible, you've confirmed OE supplier quality regardless of vehicle donor.