Moog RK641780 Suspension Control Arm - Rear Upper Rearward

BMW Rear Upper Rearward Control Arm

The Moog RK641780 is a rear upper rearward suspension control arm for select BMW applications. It is built from stamped steel with rubber bushings and a black corrosion-resistant finish to support structural strength in the rear suspension.

• Stamped steel construction for a rigid suspension arm profile
• Rubber bushings included for direct replacement service
• Black finish for added corrosion protection
• No grease fitting included
• No ball joint included
• Non-adjustable design

Fitment and Application

Compatible with rear upper rearward suspension positions on select BMW 128i, 135i, 323i, 325i, 325xi, 328i, 328i xDrive, 328xi, 330i, 330xi, 335d, 335i, 335i xDrive, 335is, 335xi, and X1 models. Fits 2012-2014 BMW X1, rear upper rearward; Fits 2008-2013 BMW 128i, rear upper rearward; Fits 2008-2013 BMW 135i, rear upper rearward; Fits 2007-2013 BMW 328i, rear upper rearward; Fits 2009-2013 BMW 328i xDrive, rear upper rearward; Fits 2012-2013 BMW 335i, rear upper rearward; Fits 2012-2013 BMW 335i xDrive, rear upper rearward; Fits 2011-2013 BMW 335is, rear upper rearward; Fits 2009-2011 BMW 335d, rear upper rearward; Fits 2007-2011 BMW 335i, rear upper rearward; Fits 2009-2011 BMW 335i xDrive, rear upper rearward; Fits 2006-2010 BMW 323i, rear upper rearward; Fits 2007-2008 BMW 328xi, rear upper rearward; Fits 2007-2008 BMW 335xi, rear upper rearward; Fits 2006 BMW 325i, rear upper rearward; Fits 2006 BMW 325xi, rear upper rearward; Fits 2006 BMW 330i, rear upper rearward; Fits 2006 BMW 330xi, rear upper rearward.

What This Control Arm Helps Address

• Rear suspension looseness or instability
• Clunking or knocking from worn rear control arm bushings
• Uneven rear tire wear caused by suspension wear
• Excessive rear wheel movement under load
• Restoring proper rear suspension geometry on BMW 3 Series and X1 models

Installation Notes and Tips

Verify the rear upper rearward position before ordering, since this arm is not adjustable and does not include a ball joint. Inspect adjacent bushings and mounting points during service, and confirm the vehicle application against the listed BMW fitment before installation. This part cross-references Dorman OE Solutions 522-131 for the same application.

Quality Assurance

Moog premium control arms are engineered for structural strength and corrosion protection for foreign and domestic nameplates. The RK641780 is built as an OE-style replacement for the listed BMW rear suspension applications.