MAS Chassis B5103 Suspension Ball Joint - Front Lower

Overview

MAS Chassis B5103 is a steel suspension ball joint built as a direct replacement for the original equipment on specific classic GM applications. It is greaseable, bolt-on, and includes a tapered stud design for serviceable front lower suspension use.

Key Features

• Steel construction with a metal bearing surface for suspension service.
• Greaseable design with a zerk fitting for routine lubrication.
• Bolt-on mounting with included hardware, castle nut, and cotter pin.
• Tapered stud and attachment design for secure fitment.
• Polychloroprene dust boot helps protect the joint from contamination.
• Standard suspension grade replacement for original equipment applications.

Detailed Description

This MAS Chassis ball joint, part number B5103, is engineered and tested for replacement use on front lower suspension locations across a wide range of classic Buick, Chevrolet, Oldsmobile, Pontiac, and GMC models. It is a fitment-based solution for vehicles such as the Chevrolet Chevelle, Pontiac GTO, and Buick Skylark, where a serviceable lower ball joint is needed to restore steering and suspension connection. The B5103 uses a steel body, metal bearing material, and a greaseable service design to support maintenance over time.

This part cross-references MOOG Chassis Products K5103 and Mevotech Supreme MK5103 for the same application.

What It Is Used For

• Restoring worn suspension articulation at the front lower control arm.
• Addressing looseness or play in the steering and suspension linkage.
• Replacing a damaged or corroded original ball joint.
• Supporting proper wheel control and suspension movement.
• Servicing classic GM chassis applications with a bolt-on replacement.

Installation Notes and Tips

Verify year, make, model, and front lower position before installation. The tapered stud, castle nut, cotter pin, and bolt-on mounting design are intended for direct replacement on listed applications. Grease the joint during service intervals to maintain lubrication.

Quality Assurance

MAS Chassis states that this suspension ball joint is precision-engineered and rigorously tested to provide reliable replacement for the original equipment on specific vehicles.