Dorman 527-127 Suspension Control Arm and Ball Joint Assembly - Front Upper

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 527-127 suspension control arm and ball joint assembly is engineered for reliable performance in select BMW models. Designed with pre-greased components and rubber bushings, this assembly supports smooth suspension operation and vehicle stability.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber and steel bushings for effective vibration dampening
• Machined ball joint with pinch stud type for secure fitment
• Stamped steel control arm construction in black finish for durability
• Compatible with multiple BMW 6 and 7 Series xDrive models

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 527-127) features a stamped steel control arm with a maximum length of 237 mm and width of 266.5 mm. The assembly includes a machined ball joint with a 14 mm thread diameter and 14.5 mm stud length, pre-installed for convenience. Rubber and steel bushings are integrated to provide suspension grade light support, enhancing ride quality and handling. The assembly is not adjustable and does not include mounting hardware or grease fittings, but it comes pre-greased to reduce initial wear.

Compatible BMW Models

This Dorman suspension control arm and ball joint assembly is compatible with the following BMW models: 640i xDrive Gran Turismo, 740e xDrive, 740i, 740i xDrive, 740Le xDrive, 745e, 745e xDrive, 745Le xDrive, 750i, 750i xDrive, 750Li, 750Li xDrive, M760i xDrive, and M760Li xDrive. Ensure proper fitment by verifying your vehicle's model and year before installation.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Ball joint wear leading to uneven tire wear or clunking noises
• Vibration or poor handling due to compromised suspension components
• Alignment problems resulting from bent or fatigued control arms
• Reduced suspension performance affecting ride comfort

Installation Notes and Tips

Installation of the Dorman 527-127 control arm and ball joint assembly requires basic suspension knowledge and appropriate tools. Since mounting hardware is not included, reuse existing bolts or acquire new hardware as needed. The assembly is pre-greased and non-greaseable, so no additional lubrication is necessary during installation. Verify torque specifications according to BMW service guidelines to ensure secure fitment and optimal performance.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit and function. The 527-127 control arm and ball joint assembly undergoes quality inspections to ensure durability and reliability. Please refer to Dorman's warranty policy for specific coverage details.