Dorman 540-086 Suspension Ball Joint - Front Lower

Dorman 540-086 Front Lower Ball Joint

Dorman 540-086 is a threaded, bolt-in suspension ball joint built for the front lower position on select Chevrolet and GMC trucks and SUVs. It is precision-engineered and tested as a direct replacement for the original equipment design on specific vehicles, including Chevrolet Astro, GMC Safari, and several K-series applications.

Key Features

• Front lower suspension ball joint for select Chevrolet and GMC applications
• Threaded, bolt-in mounting type with 4 mounting holes
• Steel construction with grey finish
• Greaseable design with dust boot included
• Castle nut included; cotter pin hole provided
• Premium suspension grade type
• Compatible with tapered stud applications
• Part number 540-086 for OE-style replacement matching

Detailed Description

This Dorman suspension ball joint is designed for front lower service on vehicles that use a bolt-in ball joint layout. It uses a steel body, threaded design, and tapered stud configuration to match the original suspension architecture on supported models. The greaseable construction and included dust boot help support long-term service in demanding front suspension environments. This part cross-references MOOG Chassis Products K6291 for the same application.

Compatible With 1990-2005 Chevrolet Astro, front lower; 1992-2005 GMC Safari, front lower; and select 1988-1995 Chevrolet and GMC K1500, K2500, K3500, Suburban, Tahoe, Blazer, and Yukon front lower applications with bolt-in type ball joints. If you are replacing a worn front lower ball joint on a Chevrolet Astro or GMC Safari, Dorman 540-086 provides a direct-fit service part for the listed configurations.

What It Helps Address

• Front-end looseness or play from a worn lower ball joint
• Clunking or popping noises from the front suspension
• Uneven tire wear related to suspension joint wear
• Steering instability caused by excessive joint movement
• Service replacement for bolt-in front lower ball joint applications

Installation Notes and Tips

Verify the vehicle’s front lower suspension design before ordering, especially on 1995 Chevrolet and GMC K-series models that require bolt-on type ball joints. Confirm the tapered stud, threaded mounting style, and 4-hole bolt-in pattern match the original part. Use the included castle nut as specified by the vehicle service procedure, and inspect the surrounding control arm and hardware for wear before installation. The 12 mm wrench size and cotter pin hole are provided for proper fastening and alignment during service.

Quality Assurance

Dorman manufactures this ball joint as a premium suspension replacement and tests it for reliable fit and function on the listed vehicles. Part number 540-086 is built to replace the original equipment design on supported Chevrolet and GMC front lower applications.