Dorman 540-047 Suspension Ball Joint - Front Left Upper

Dorman 540-047 Front Left Upper Ball Joint

Dorman 540-047 is a bolt-in suspension ball joint built as a direct replacement for specific Cadillac front suspension applications. It is precision-engineered and tested for dependable OE-style fit on Cadillac DeVille and Cadillac Fleetwood models with front left upper placement.

Key Features

• Steel construction with a grey finish
• Bolt-in mounting type for specific suspension applications
• Greaseable design with grease fitting included
• Dust boot included to help protect the joint
• Castle nut, cotter pin, cotter pin hole, and mounting hardware included
• Tapered stud design with 21 mm wrench size
• Standard suspension grade replacement

Detailed Description

This Dorman suspension ball joint, part number 540-047, is made for the front left upper position on 1961-1976 Cadillac DeVille and 1965-1976 Cadillac Fleetwood models. It is a bolt-in, greaseable replacement with a tapered stud and steel body, built to match the original equipment layout on these classic Cadillac front suspensions. If you are servicing a Cadillac DeVille front left upper ball joint or replacing a worn Cadillac Fleetwood upper ball joint, Dorman 540-047 provides the correct fitment-focused solution.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Front-end looseness or play at the upper ball joint
• Clunking or knocking from the front suspension
• Uneven tire wear related to worn suspension joints
• Steering wander caused by excessive joint movement
• Restoration work on Cadillac DeVille and Fleetwood front suspension assemblies

Installation Notes and Tips

Verify the front left upper position before installation and confirm the tapered stud, bolt-in mounting style, and dimensions match the original part. Clean the mounting area thoroughly, torque fasteners to the vehicle service specification, and use the included cotter pin and castle nut where required. After installation, inspect alignment and suspension geometry, especially on older Cadillac DeVille and Cadillac Fleetwood vehicles.

Quality Assurance

Dorman tests this replacement ball joint for reliable service on the listed applications. The part is engineered to serve as a standard replacement for the original equipment design on specific vehicles.