Dorman 540-085 Suspension Ball Joint - Front Lower

Front Lower Suspension Ball Joint

Dorman 540-085 is a threaded, bolt-in suspension ball joint for front lower applications on a wide range of Chevrolet, Buick, Pontiac, Saturn, Cadillac, Oldsmobile, and Suzuki vehicles. It is precision-engineered and tested as a direct replacement for the original equipment part on specific applications, including Chevrolet Impala, Buick LaCrosse, and Pontiac Grand Prix models.

Key Features

• Threaded, bolt-in front lower suspension ball joint
• Steel construction with grey finish
• Premium suspension grade type
• Dust boot included with polychloroprene material
• Castle nut included; cotter pin hole provided
• Mounting hardware included
• Wrench size: 12 mm
• Stud type: tapered
• Part number: 540-085

Detailed Description

This Dorman suspension ball joint is built for front lower suspension service where OE-style fit and geometry matter. The steel body, threaded design, and tapered stud support secure installation on vehicles such as the Chevrolet Impala, Buick Allure, and Pontiac Grand Prix. Dorman 540-085 is also cross-referenced to MOOG Chassis Products K5331 for the same application.

Use this replacement when servicing worn front lower ball joints on vehicles across the 1997-2016 model years listed in the fitment data. The assembly includes a dust boot and mounting hardware, and it is not greaseable or adjustable.

Vehicle Fitment

• Fits 2014-2016 Chevrolet Impala Limited, front lower
• Fits 2008-2015 Chevrolet Captiva Sport, front lower
• Fits 2000-2013 Chevrolet Impala, front lower
• Fits 2002-2010 Saturn Vue, front lower
• Fits 2005-2009 Buick Allure, front lower
• Fits 2005-2009 Buick LaCrosse, front lower
• Fits 2005-2009 Chevrolet Equinox, front lower
• Fits 2005-2009 Chevrolet Uplander, front lower
• Fits 1999-2009 Pontiac Montana, front lower
• Fits 2006-2009 Pontiac Torrent, front lower
• Fits 2007-2009 Suzuki XL-7, front lower
• Fits 1997-2008 Pontiac Grand Prix, front lower
• Fits 2002-2007 Buick Rendezvous, front lower
• Fits 2005-2007 Buick Terraza, front lower
• Fits 2000-2007 Chevrolet Monte Carlo, front lower
• Fits 2005-2007 Saturn Relay, front lower
• Fits 1997-2005 Buick Century, front lower
• Fits 2001-2005 Pontiac Aztek, front lower
• Fits 1997-2004 Buick Regal, front lower
• Fits 1997-2004 Oldsmobile Silhouette, front lower
• Fits 2001-2003 Oldsmobile Aurora, front lower, standard replacement
• Fits 1997-2002 Cadillac Eldorado, front lower
• Fits 1998-2002 Oldsmobile Intrigue, front lower
• Fits 1997-1999 Cadillac DeVille, front lower, w/standard suspension
• Fits 1997-1999 Cadillac Seville, front lower
• Fits 1997-1999 Pontiac Trans Sport, front lower

Common Repair Uses

• Restores tight front-end control when the original ball joint is worn
• Addresses clunking or popping from the lower suspension area
• Helps correct looseness in steering feel caused by joint wear
• Supports proper suspension articulation on front lower control arm service
• Replaces damaged OE-style ball joints on high-mileage vehicles

Installation Notes

Confirm the vehicle’s front lower suspension configuration before ordering, especially on Cadillac DeVille applications with standard suspension notes. Inspect the control arm, mounting points, and surrounding hardware for wear before installation. The tapered stud, cotter pin hole, and 12 mm wrench size support standard service procedures, and the included dust boot should be checked for proper seating after assembly.

Quality Assurance

Dorman designs this replacement ball joint for specific vehicle applications and subjects it to testing for reliable service in front suspension repair. The part is built as a premium suspension-grade replacement for OE-style fitment on the listed Chevrolet, Buick, Pontiac, Saturn, Cadillac, Oldsmobile, and Suzuki models.