Dorman 538-773 Suspension Ball Joint - Front Lower

Dorman 538-773 Front Lower Ball Joint

Dorman 538-773 is a threaded suspension ball joint built as a direct replacement for the original equipment on select Mercedes-Benz SUVs. It is precision-engineered and tested for dependable front suspension service on ML320, ML430, ML500, ML55 AMG, and ML350 applications.

Key Features

• Threaded, press-in style suspension ball joint for front lower mounting locations
• Steel construction with a grey finish
• Dust boot included; boot material is polychloroprene
• Premium suspension grade type
• Tapered stud design with 12 mm wrench size
• Mounting hardware included
• No grease fitting, greaseable design, castle nut, cotter pin, or bushings included

Detailed Description

This Dorman suspension ball joint, part number 538-773, is made for front lower suspension service where OE-style fit and steering articulation are required. The steel body and threaded construction support a precise replacement on Mercedes-Benz ML-Class vehicles, while the included dust boot helps protect the joint from road contamination. This part cross-references MOOG Chassis Products K500005 for the same application.

Compatible With 1998-2003 Mercedes-Benz ML320, front lower; 1998-2001 Mercedes-Benz ML430, front lower; 2002-2005 Mercedes-Benz ML500, front lower; 2000-2003 Mercedes-Benz ML55 AMG, front lower; and 2003-2005 Mercedes-Benz ML350, front lower. The Dorman 538-773 is a practical OE replacement for drivers servicing worn front suspension components on these Mercedes-Benz models.

What It Helps Fix

• Front-end looseness or play from a worn lower ball joint
• Clunking or knocking noises from the front suspension
• Uneven tire wear related to suspension joint wear
• Steering wander or reduced directional stability
• Inspection failures caused by excessive ball joint movement

Installation Notes and Tips

Install at the front lower suspension position only. Because this is a press-in, threaded-style ball joint, proper removal and installation tools are recommended to avoid damage to the control arm or joint housing. After installation, verify fastener torque and inspect alignment, since ball joint replacement can affect front suspension geometry.

Quality Assurance

Dorman designs this replacement ball joint to match original equipment requirements for the listed Mercedes-Benz applications and subjects it to testing for fit and function. Part number 538-773 is built for reliable service in front lower suspension repair.