Delphi TC5057 Suspension Ball Joint - Front Lower Inner

Delphi TC5057 Front Lower Ball Joint

Delphi TC5057 is a standard replacement suspension ball joint built for the front lower inner position on select Mini Cooper applications. It combines a steel body, pressed mounting design, and a dust boot to support precise suspension movement in everyday driving.

For Mini Cooper owners searching for a front lower inner ball joint, Delphi TC5057 offers OE-focused dimensional and material analysis for fitment consistency. It is a direct replacement for the specified application and is built to handle demanding temperature and corrosion testing standards.

Key Features

• Part number: TC5057
• Suspension ball joint for the front lower inner position
• Steel construction with gray finish
• Pressed mounting type with threaded stud design
• Dust boot included; grease fitting not included
• Standard replacement suspension grade
• Mounting hardware included; nuts included
• Tapered stud design for secure suspension connection
• Compatible with 2007-2015 Mini Cooper, front lower inner

Detailed Description

Delphi TC5057 is engineered as a suspension ball joint for the front lower inner location on 2007-2015 Mini Cooper models. Delphi applies OE-level dimensional and material analysis to help maintain proper compatibility between the replacement part and the original suspension geometry. The steel construction, pressed mount, and tapered threaded stud support a secure connection in the front suspension assembly.

This part cross-references Beck/Arnley 102-7604 and Dorman - OE Solutions 526-944 for the same application. Delphi TC5057 is also referenced under OE-style interchange numbers 31124048628 and CB29024.

Common Repair Symptoms

• Front suspension looseness or play
• Clunking or knocking from the lower front suspension
• Uneven tire wear related to worn ball joint movement
• Steering response that feels imprecise
• Visible dust boot wear or joint contamination

Installation Notes and Tips

Delphi TC5057 installs in the pressed front lower inner position on the Mini Cooper application listed above. Verify the stud thread diameter, tapered stud dimensions, and mounting style before installation to confirm proper match to the original suspension component. Because this is a pressed-style ball joint, professional installation equipment is typically required for removal and installation.

Always inspect the surrounding control arm and related suspension hardware for wear before completing the repair. Confirm alignment after installation to restore proper front suspension geometry.

Quality Assurance

Delphi tests its OE-based steering and suspension components under extreme temperature and corrosion conditions, including exposure below -40 degrees C, above 120 degrees C, and extended salt spray testing. That validation process supports consistent performance for the Delphi TC5057 in the specified Mini Cooper application.