Dorman 538-377 Suspension Ball Joint - Front Lower Rearward

Dorman 538-377 Suspension Ball Joint

Dorman 538-377 is a threaded suspension ball joint built as a standard replacement for the original equipment part on select BMW applications. It is precision-engineered and tested for reliable front suspension service, with fitment for the front lower rearward position on BMW 535i xDrive, 550i xDrive, 650i xDrive, and related models.

Key Features

• Threaded, bolt-in suspension ball joint for front lower rearward placement
• Steel construction with grey finish
• Greaseable design with grease fitting included
• Dust boot included to help protect the joint from contamination
• Castle nut, cotter pin hole, and mounting hardware included
• Tapered stud design with 12 mm wrench size
• Standard replacement suspension grade

Detailed Description

This Dorman suspension ball joint, part number 538-377, is engineered for direct replacement use on select BMW front suspension assemblies. It matches the original equipment style for the front lower rearward location and is built from steel with a polychloroprene dust boot for added protection. The greaseable design supports serviceability, while the threaded, bolt-in mounting style helps maintain proper suspension geometry when replacing worn front lower components. This part cross-references MOOG Chassis Products K500405 for the same application.

Compatible With BMW 535i xDrive, 550i xDrive, 528i xDrive, 535d xDrive, 650i xDrive, 640i xDrive, 740Li xDrive, 740Ld xDrive, 750i xDrive, and 750Li xDrive front lower rearward applications. Dorman 538-377 is also listed for BMW 535i GT xDrive and 550i GT xDrive front lower rearward service, making it a fitment-focused replacement for a wide range of BMW xDrive suspension repairs.

Common Repair Uses

• Restores a worn or loose front suspension ball joint
• Addresses clunking or knocking from the front lower rearward suspension area
• Helps correct steering play caused by joint wear
• Supports repair of uneven tire wear linked to suspension looseness
• Replaces a damaged dust boot or contaminated joint assembly

Installation Notes and Tips

Verify the front lower rearward position before ordering, since this part is application-specific. Inspect the surrounding control arm and mounting points for wear before installation, and confirm the tapered stud, castle nut, and cotter pin hole alignment during assembly. Because this is a threaded, bolt-in style ball joint, proper torque and suspension loading procedures should be followed during installation.

Quality Assurance

Dorman states that this replacement ball joint is precision-engineered and rigorously tested for dependable OE-style service on the listed BMW applications. Part number 538-377 is built to meet standard replacement expectations for front suspension repair.