Dorman 540-019 Suspension Ball Joint - Front Lower

Dorman 540-019 Front Lower Ball Joint

Dorman 540-019 is a threaded suspension ball joint built as a direct replacement for the original equipment on select Ford Thunderbird and Lincoln LS applications. It is precision-engineered and tested for reliable fitment on the front lower suspension position.

Key Features

• Threaded, press-in suspension ball joint for front lower use
• Metal construction with grey finish
• Dust boot included to help protect the joint
• Castle nut and mounting hardware included
• Tapered stud design with 12 mm wrench size
• Standard replacement grade for OE-style service
• Grease fitting not included; non-greaseable design

Fitment and Application

Compatible with 2003-2006 Lincoln LS, front lower, and 2003-2005 Ford Thunderbird, front lower. It also fits 2002 Ford Thunderbird, front lower, w/16 mm ball joint, and 2002 Lincoln LS, front lower, w/16 mm ball joint. This part number, 540-019, is a direct-fit suspension ball joint for these specific front lower applications.

This part cross-references MOOG Chassis Products K500085 for the same application.

What This Ball Joint Helps Address

• Excessive front suspension play or looseness
• Clunking or knocking from the lower control arm area
• Uneven tire wear related to worn ball joint movement
• Steering wander caused by worn suspension joints
• Inspection failure from damaged or worn front lower ball joints

Installation Notes and Tips

Verify the vehicle year, make, model, and front lower position before installation. The press-in design requires proper suspension service tools and correct seating in the control arm. Confirm the stud thread length, tapered stud interface, and included castle nut match the original hardware layout before final assembly. For 2002 Ford Thunderbird and 2002 Lincoln LS applications, confirm the 16 mm ball joint specification.

Quality Assurance

Dorman designs this suspension ball joint as a replacement for the original equipment on specific vehicles and subjects it to testing for fit and function. Part number 540-019 is built to meet the demands of front suspension service on Ford Thunderbird and Lincoln LS applications.