Dorman 538-131 Suspension Ball Joint - Front Lower

Dorman 538-131 Front Lower Ball Joint

Dorman 538-131 is a press-in suspension ball joint built as a standard replacement for the original equipment on select Audi, Bentley, Lamborghini, and Porsche vehicles. It is precision-engineered and tested for dependable front suspension service on applications such as the Audi Q7 front lower ball joint and Porsche Cayenne front lower ball joint.

Key Features

• Direct replacement suspension ball joint for specific front lower applications
• Press-in mounting type for OE-style installation
• Aluminum construction with black and gray finish
• Dust boot included with polychloroprene boot material
• Tapered stud design with 14 mm wrench size
• Standard suspension grade replacement
• Mounting hardware included
• Part number 538-131 for catalog and service reference

Detailed Description

This Dorman suspension ball joint is designed for front lower suspension positions on a range of premium SUVs and performance vehicles, including the Audi A8 Quattro, Audi Q8, Bentley Bentayga, Lamborghini Urus, and Porsche Cayenne. The aluminum body, tapered stud, and press-in design support OE-style fitment where the original joint is serviced as part of the suspension assembly. Part number 538-131 also cross-references MOOG Chassis Products K500380 for the same application.

Use 538-131 when replacing a worn front lower ball joint on vehicles such as the Audi Q7 front lower suspension or Bentley Bentayga front lower suspension. The design includes a dust boot and mounting hardware, while omitting a grease fitting, castle nut, cotter pin, and bushings for a straightforward standard replacement layout.

What It Helps Fix

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

Installation Notes

Install 538-131 in the front lower position only on the listed vehicles. Because this is a press-in ball joint, proper suspension service tools are required for removal and installation. Verify the tapered stud, wrench size, and mounting dimensions against the original part before assembly. This part is listed for 2017-2024 Audi Q7, 2019-2024 Porsche Cayenne, and other confirmed front lower applications.

Quality Assurance

Dorman states that this ball joint is precision-engineered and rigorously tested to provide a reliable replacement for the original equipment on specific vehicles. The part is built as a standard replacement component for confirmed fitment across 2017-2024 Audi Q7, 2017-2024 Bentley Bentayga, 2018-2024 Lamborghini Urus, and related applications.