Dorman 540-033 Suspension Ball Joint - Front Lower

Dorman 540-033 Suspension Ball Joint

Dorman 540-033 is a threaded suspension ball joint for the front lower position on select Ford Ranger and Mazda B-Series trucks. It is precision-engineered and tested as a direct replacement for the original equipment ball joint on the listed applications.

• Threaded ball joint design for front lower suspension service
• Steel construction with grey finish
• Dust boot included to help protect the joint from contamination
• Castle nut included
• Mounting hardware included
• Cotter pin hole included
• Premium suspension grade type
• Press-in mounting type
• Wrench size: 12 mm

Vehicle Fitment

• Fits 2012 Ford Ranger, front lower, w/coil spring
• Fits 1998-2011 Ford Ranger, front lower
• Fits 2001-2010 Mazda B2300, front lower
• Fits 2003-2007 Mazda B3000, front lower
• Fits 1998-2001 Mazda B3000, front lower
• Fits 1998-2001 Mazda B2500, front lower
• Fits 1998-2000 Mazda B4000, front lower

Detailed Description

This Dorman suspension ball joint, part number 540-033, is built for front lower suspension repair on Ford Ranger and Mazda B2300, B3000, B2500, and B4000 models listed above. The steel body, threaded stud, and included dust boot support a serviceable OE-style replacement for worn lower ball joints in the front suspension. Dorman 540-033 also cross-references MOOG Chassis Products K8771T for the same application.

Common Repair Symptoms

• Front-end clunking or popping over bumps
• Excessive play in the lower suspension joint
• Uneven tire wear from worn steering and suspension geometry
• Loose or unstable front suspension feel
• Inspection failure due to ball joint wear

Installation Notes and Tips

Verify the vehicle’s front lower suspension configuration before installation, especially on the 2012 Ford Ranger with coil spring notes. This is a press-in style ball joint with a threaded stud and cotter pin hole, so proper pressing tools and torque procedures are important for correct installation. Confirm the 12 mm wrench size and match the original mounting style to the vehicle before service.

Quality Assurance

Dorman states this ball joint is precision-engineered and rigorously tested for reliable OE replacement performance on the specified vehicles. The part number is 540-033.