Delphi TC7639 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Delphi Suspension Control Arm and Ball Joint Assembly Overview

The Delphi TC7639 suspension control arm and ball joint assembly is designed specifically for the front left upper position on Lexus IS300 models. This pre-greased, stamped steel control arm features integrated rubber bushings and a press-in ball joint with a threaded stud, providing reliable suspension performance and precise fitment.

• Pre-greased for immediate installation
• Stamped steel construction for durability
• Includes rubber bushings for vibration dampening
• Press-in ball joint with threaded stud (0.472 inch diameter, 0.886 inch length)
• Control arm dimensions: 10.354 inches length, 3.28 inches maximum width
• Black finish for corrosion resistance
• Mounting hardware included for convenience

Detailed Product Description

The Delphi TC7639 suspension control arm and ball joint assembly is engineered to meet the exact specifications of the Lexus IS300 front left upper suspension. Constructed from stamped steel, this control arm offers a balance of strength and weight, ensuring consistent handling and suspension geometry. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to reduce noise and absorb road vibrations, enhancing ride comfort. The ball joint is press-in mounted with a threaded stud, measuring 0.472 inches in diameter and 0.886 inches in length, providing secure attachment and smooth articulation. Finished in black, the control arm resists corrosion and maintains its structural integrity over time.

Common Applications and Problem Resolution

• Replacement of worn or damaged front left upper suspension control arm on Lexus IS300
• Elimination of suspension noise caused by deteriorated bushings
• Correction of alignment issues due to bent or compromised control arms
• Restoration of proper steering response and vehicle handling
• Addressing ball joint wear that leads to uneven tire wear or suspension play

Installation Notes and Tips

Installation of the Delphi TC7639 control arm assembly requires standard suspension tools and mechanical knowledge. Since the part is pre-greased and includes bushings and mounting hardware, preparation time is reduced. Ensure the vehicle is securely lifted and supported before removal of the old control arm. Verify torque specifications for all fasteners according to Lexus IS300 service manuals. Alignment should be checked and adjusted after installation to maintain proper suspension geometry and tire wear.

Quality Assurance and Warranty

Delphi suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The TC7639 control arm assembly is a standard replacement grade part, designed for reliable performance and durability. While specific warranty details are not provided here, Delphi typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or authorized sources for exact warranty terms.