Dorman 533-240 Suspension Ball Joint - Front Upper

Dorman 533-240 Front Upper Ball Joint

Dorman 533-240 is a threaded suspension ball joint for the front upper position on select Ford, Lincoln, and Mercury vehicles. It is precision-engineered and tested as a direct replacement for the original equipment design, with fitment for classic full-size platforms including the Ford LTD Crown Victoria, Mercury Grand Marquis, and Lincoln Mark VI.

Key Features

• Front upper suspension ball joint for select rear-wheel-drive applications
• Threaded stud type with bolt-in mounting design
• Steel construction with grey finish
• Dust boot included with rubber boot material
• Greaseable design with grease fitting provision
• Castle nut, mounting hardware, and cotter pin hole included
• Wrench size: 12 mm
• Cross-reference: MOOG Chassis Products K8310 for the same application

Detailed Description

This Dorman suspension ball joint, part number 533-240, is built for the front upper suspension location on compatible Ford, Mercury, and Lincoln models from 1979 through 1991. It is a steel, threaded replacement assembly with a dust boot and greaseable service design, made to restore steering and suspension connection points where wear can affect alignment and road feel. Applications include the 1979-1991 Mercury Grand Marquis, 1987-1991 Ford LTD Crown Victoria, 1979-1986 Ford LTD, 1987-1991 Mercury Colony Park, 1980-1983 Lincoln Mark VI, and 1991 Ford Grand Marquis. This part cross-references MOOG Chassis Products K8310 for the same application.

What It Helps Address

• Front-end clunking or looseness from a worn upper ball joint
• Uneven tire wear caused by suspension joint play
• Steering wander or imprecise road feel
• Alignment instability after suspension wear develops
• Noise from a deteriorated dust boot or dry joint

Installation Notes and Tips

Verify the front upper position and threaded-style fitment before installation. The included cotter pin hole and castle nut support secure fastening, and the greaseable design allows routine lubrication after service. Because this is a bolt-in, threaded suspension ball joint, confirm thread engagement, stud length, and mounting-hole alignment against the original part before final assembly. Use the vehicle’s service specifications for torque and alignment checks after installation.

Quality Assurance

Dorman manufactures this ball joint as a tested OE-style replacement for specific vehicles, with attention to material, fit, and suspension function. Part number 533-240 is engineered for dependable service in the front upper suspension location on the listed Ford, Lincoln, and Mercury applications.