Delphi TC2379 Suspension Ball Joint - Front Lower

Front Lower Ball Joint for Mercedes-Benz

Restore precise front suspension movement with the Delphi TC2379 suspension ball joint. This standard replacement part is built with a steel body, black finish, and a protective dust boot to support consistent steering and suspension articulation on select Mercedes-Benz models.

Fits 2006-2012 Mercedes-Benz R350, front lower; 2006-2011 Mercedes-Benz ML350, front lower; and other select GL, ML, and R-Class applications listed below. Delphi applies OE-focused dimensional and material analysis to help match factory fit and function for the front lower suspension position.

• Delphi TC2379 suspension ball joint for front lower applications
• Steel construction with black finish
• Dust boot included; chloroprene rubber (CR) boot material
• Standard replacement grade, non-adjustable and non-greaseable
• Threaded tapered stud design
• Mounting hardware, nuts, and mounting bolts included
• OE-style dimensional and material analysis for fitment accuracy
• Cross-reference: Beck/Arnley 101-7021

Detailed Product Information

The Delphi TC2379 is a suspension ball joint engineered for the front lower position on select Mercedes-Benz GL-Class, ML-Class, and R-Class vehicles. It features a steel ball joint assembly with a tapered threaded stud, 12.0 mm stud thread diameter, and a protective dust boot to help maintain joint integrity in demanding suspension service. The unit measures 91.9 mm wide, 88.6 mm high, and 38.8 mm maximum outside diameter.

Delphi subjects its steering and suspension components to extreme temperature and corrosion testing, including exposure below -40 degrees C, above 120 degrees C, and 720 hours of salt spray. That testing, along with dimensional and material analysis, supports OE-style fitment for Mercedes-Benz ML350, ML550, GL450, and related front lower applications. Part number TC2379 is also listed with interchange references including Mevotech Supreme MS10522.

Common Problems This Part Can Address

• Front-end looseness or play from a worn ball joint
• Clunking or knocking noises from the lower suspension
• Uneven tire wear caused by suspension joint wear
• Imprecise steering response during braking or cornering
• Suspension movement issues at the front lower control arm connection

Installation Notes and Tips

Verify the vehicle’s front lower suspension configuration before ordering, since fitment varies by model and year. This part is listed for 2006-2012 Mercedes-Benz GL350, 2007-2012 GL450, 2008-2012 GL550, 2006-2012 R350, 2006-2011 ML350, 2010-2011 ML450, 2008-2011 ML550, 2007-2011 ML63 AMG, 2007-2009 GL320, 2007-2009 ML320, 2007-2009 R320, 2006-2007 ML500, 2006-2007 R500, and 2007 R63 AMG, all in the front lower position.

Because this is a threaded tapered-stud design with included mounting hardware, proper torque and suspension alignment procedures should be followed after installation. Inspect the surrounding control arm and mounting points for wear before replacing the joint.

Quality Assurance

Delphi applies OE safety technology and aftermarket steering expertise to this suspension ball joint. The part is tested for temperature extremes and salt-spray corrosion resistance, with dimensional and material checks used to support OE-to-aftermarket compatibility.