MAS Chassis B90355 Suspension Ball Joint - Front Left Lower

Front Left Lower Suspension Ball Joint

Restore precise front suspension movement with this MAS Chassis suspension ball joint, part number B90355. Built as a standard replacement for select Volkswagen and Audi applications, it uses a steel body, tapered stud, rubber dust boot, and polymer bearing material for dependable OE-style service.

Key Features

• Steel construction for durable suspension support
• Standard suspension grade type for direct replacement use
• Bolt-on mounting design with 3 mounting holes
• Tapered stud with 12 mm thread diameter and 1.5 thread pitch
• Rubber dust boot helps protect the joint from road contamination
• Polymer bearing material for smooth articulation
• Mounting hardware included for installation
• Non-greaseable, non-adjustable design

Detailed Description

MAS Chassis B90355 is a front left lower suspension ball joint engineered for specific Volkswagen Beetle, Jetta, Golf, Golf City, Beetle Cabrio, Clasico, Jetta City, and Audi A3 applications. It is a bolt-on replacement that matches the original suspension layout on vehicles such as the 1999-2010 Volkswagen Jetta, 1999-2007 Volkswagen Golf, and 1998-2002 Audi A3. This part cross-references MOOG Chassis Products K90355 for the same application.

Use B90355 when servicing worn front suspension joints on vehicles that show looseness, uneven tire wear, or steering play. The design follows standard replacement requirements and is intended for the front left lower position only. For fitment-specific searches, this part is commonly selected for 1998-2011 Volkswagen Beetle front left lower, 1999-2010 Volkswagen Jetta front left lower, and 1998-2002 Audi A3 front left lower applications.

Common Issues This Part Can Address

• Front-end clunking or knocking over bumps
• Excessive play in the steering or suspension
• Uneven or accelerated tire wear
• Loose or unstable front left lower suspension movement
• Worn ball joint articulation in high-mileage vehicles

Installation Notes and Tips

Confirm the vehicle’s year, make, model, and front left lower position before installation. Inspect the control arm, fasteners, and surrounding suspension components for wear or damage, and replace any compromised hardware as needed. Because this is a bolt-on design, proper torque and alignment procedures are important after installation. Verify the tapered stud and thread specifications match the original part before assembly.

Quality Assurance

This suspension ball joint is precision-engineered and rigorously tested to provide reliable replacement performance for the original equipment on the listed vehicles. MAS Chassis B90355 is built to standard replacement expectations for consistent fit and function.