Dorman 539-815 Suspension Ball Joint - Front Lower

Dorman 539-815 Front Lower Ball Joint

Dorman 539-815 is a threaded suspension ball joint engineered as a direct replacement for the original equipment on select Isuzu and Acura vehicles. It is built from steel with a dust boot, tapered stud, and bolt-in mounting design for front lower suspension service.

Key Features

• Precision-engineered replacement suspension ball joint
• Steel construction with grey finish
• Threaded design with tapered stud
• Dust boot included for joint protection
• Castle nut, cotter pin hole, and mounting hardware included
• Standard replacement suspension grade
• Grease fitting not included; greaseable design not provided

Detailed Description

This Dorman suspension ball joint is made for front lower suspension applications on 1995-2002 Isuzu Trooper, 1999-2001 Isuzu VehiCROSS, and 1996-1999 Acura SLX. The Dorman 539-815 uses a bolt-in mounting type with four mounting holes, a 12 mm wrench size, and a tapered stud for secure installation. Its steel body and polychloroprene dust boot help support long-term service in demanding suspension environments.

This part cross-references MOOG Chassis Products K80371 and Delphi TC7903 for the same application. For buyers searching for a front lower ball joint for Isuzu Trooper, Isuzu VehiCROSS, or Acura SLX, part number 539-815 provides an OE-style replacement option with confirmed fitment.

What It Helps Address

• Front-end looseness or play from a worn ball joint
• Clunking or knocking from the lower suspension area
• Uneven tire wear related to suspension joint wear
• Steering instability caused by excess joint movement
• Inspection failures tied to worn front lower suspension components

Installation Notes and Tips

Verify vehicle fitment by year, make, model, and front lower position before installation. The threaded, bolt-in design and included castle nut should be matched to the vehicle’s suspension layout, and the tapered stud must seat correctly in the knuckle. Because this ball joint is not greaseable and does not include a grease fitting, it is installed as a sealed replacement unit.

Quality Assurance

Dorman states that this suspension ball joint is precision-engineered and rigorously tested to provide reliable replacement performance for the original equipment on specific vehicles. Part number 539-815 is built to meet standard replacement expectations for front lower suspension service.