Dorman 540-084 Suspension Ball Joint - Front Lower

Dorman 540-084 Front Lower Ball Joint

Dorman 540-084 is a threaded, bolt-in suspension ball joint built for front lower applications on select Chevrolet, Buick, Oldsmobile, and Pontiac vehicles. It is precision-engineered and tested as a direct replacement for the original equipment design on the listed applications.

• Fits 1990-2001 Chevrolet Lumina, front lower
• Fits 1995-1999 Chevrolet Monte Carlo, front lower
• Fits 1988-1997 Oldsmobile Cutlass Supreme, front lower
• Fits 1988-1996 Buick Regal, front lower
• Fits 1988-1996 Pontiac Grand Prix, front lower

Key Features

• Steel construction with a grey finish
• Threaded, bolt-in mounting type
• Tapered stud design with 12 mm wrench size
• Dust boot included with polychloroprene material
• Castle nut, cotter pin hole, and mounting hardware included
• Premium suspension grade type
• Grease fitting not included; greaseable design not listed
• Adjustable: No

Detailed Description

This Dorman suspension ball joint is designed for front lower suspension service on the Chevrolet Lumina, Chevrolet Monte Carlo, Oldsmobile Cutlass Supreme, Buick Regal, and Pontiac Grand Prix. The steel body, threaded construction, and tapered stud help support a secure OE-style replacement for worn front suspension joints. Dorman 540-084 is a practical choice when servicing front-end looseness on vehicles that use this specific bolt-in layout.

This part cross-references MOOG Chassis Products K5301 for the same application. It also cross-references Delphi TC1848 for the same application. Dorman 540-084 is listed with direct interchange references including K5301-style applications, making it easier to match the correct front lower ball joint for these GM platforms.

Common Issues This Part Can Help Address

• Front-end clunking or popping over bumps
• Excessive play in the lower suspension joint
• Uneven tire wear related to worn ball joint movement
• Loose or unstable steering feel at the front suspension
• Inspection failure caused by worn lower ball joint components

Installation Notes and Tips

Verify the vehicle’s front lower suspension layout before ordering, since this part is application-specific. Confirm the mounting style, stud type, and dimensions against the original component during service. The included cotter pin hole and castle nut support proper fastening where specified by the vehicle design.

Quality Assurance

Dorman states this ball joint is precision-engineered and rigorously tested for reliable replacement performance on the listed vehicles. The part is built to match the original equipment application requirements for the supported Chevrolet, Buick, Oldsmobile, and Pontiac models.