Dorman 538-779 Suspension Ball Joint - Front Lower Rearward

Dorman 538-779 Front Lower Rearward Ball Joint

Dorman 538-779 is a threaded suspension ball joint built as a standard replacement for the original equipment on select Mercedes-Benz models. It is precision-engineered and tested for dependable steering and suspension service on front lower rearward applications.

• Threaded, bolt-in style suspension ball joint
• Steel construction with grey finish
• Rubber dust boot included
• Mounting hardware included
• Standard replacement suspension grade
• 12 mm wrench size
• Tapered stud design
• Part number: 538-779

Vehicle Fitment

• Fits 2015-2018 Mercedes-Benz CLS400, front lower rearward.
• Fits 2012-2018 Mercedes-Benz CLS500, front lower rearward.
• Fits 2012-2018 Mercedes-Benz CLS550, front lower rearward.
• Fits 2012-2016 Mercedes-Benz E200, front lower rearward.
• Fits 2014-2016 Mercedes-Benz E250, front lower rearward.
• Fits 2011-2012 Mercedes-Benz E250, front lower rearward.
• Fits 2010-2016 Mercedes-Benz E350, front lower rearward.
• Fits 2013-2016 Mercedes-Benz E400, front lower rearward.
• Fits 2010-2016 Mercedes-Benz E500, front lower rearward.
• Fits 2010-2016 Mercedes-Benz E63 AMG, front lower rearward.
• Fits 2012-2014 Mercedes-Benz CLS350, front lower rearward.
• Fits 2012-2014 Mercedes-Benz CLS63 AMG, front lower rearward.
• Fits 2010-2011 Mercedes-Benz E300, front lower rearward.
• Fits 2010-2011 Mercedes-Benz E550, front lower rearward.

Detailed Description

This Dorman ball joint is made for front lower rearward suspension locations on Mercedes-Benz CLS400, CLS500, CLS550, CLS350, CLS63 AMG, E200, E250, E300, E350, E400, E500, E550, and E63 AMG models across the 2010-2018 model years. The steel body, threaded design, and tapered stud help provide a direct replacement solution where the original joint has worn, loosened, or developed play. The included dust boot helps protect the joint from road contamination, while the standard replacement design supports OE-style serviceability. This part cross-references MOOG Chassis Products K500409 for the same application.

Common Repair Symptoms

• Front-end clunking or knocking over bumps
• Excessive play in the lower suspension joint
• Uneven tire wear caused by suspension looseness
• Steering wander or reduced directional stability
• Visible dust boot damage or joint contamination

Installation Notes

Verify the front lower rearward position before installation and confirm the stud, thread, and mounting style match the original component. Inspect the surrounding control arm and fasteners for wear before assembly. Use the correct 12 mm wrench size during service and follow the vehicle manufacturer’s torque specifications.

Quality Assurance

Dorman designs this suspension ball joint as a precision-engineered replacement and subjects it to testing for reliable service on the listed Mercedes-Benz applications. Part number 538-779 is built to replace the original equipment on specific vehicles with the correct fit and function.