Delphi TC480 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Delphi Suspension Control Arm and Ball Joint Assembly Overview

The Delphi TC480 suspension control arm and ball joint assembly is engineered for front left upper suspension applications on select BMW models. Designed with durable steel construction and a machined ball joint mounting, this component provides reliable performance for vehicles such as the BMW 735i, 740i, and 850Ci.

• Control arm made from forged and cast steel for strength and durability
• Machined ball joint mounting with threaded stud for secure fitment
• Includes mounting hardware for straightforward installation
• Standard replacement grade suitable for light suspension use
• Compatible with front left upper position on multiple BMW models

Technical Details and Construction

The Delphi TC480 features a steel control arm constructed through casting and forging processes, ensuring structural integrity under typical driving conditions. The ball joint stud is threaded with a 14 mm diameter and a length of 65.5 mm, designed to fit precisely in the front left upper suspension of BMW 735i, 735iL, 740i, 740iL, 750iL, 840Ci, 850Ci, 850CSi, and 850i models. This assembly does not include bushings or grease fittings and is not greaseable, relying on natural rubber bushings for vibration dampening. The control arm measures approximately 480 mm in length and 70 mm in maximum width, finished in black for corrosion resistance.

Compatible BMW Models and Applications

This suspension control arm and ball joint assembly is compatible with the following BMW vehicles:

• BMW 735i and 735iL
• BMW 740i and 740iL
• BMW 750iL
• BMW 840Ci
• BMW 850Ci, 850CSi, and 850i

Common Suspension Issues Addressed

• Worn or damaged control arm causing poor handling or alignment issues
• Ball joint wear leading to steering instability or noise
• Excessive suspension play affecting ride quality
• Corrosion or fatigue in original suspension components
• Replacement of non-adjustable, standard grade suspension parts

Installation Notes and Tips

The Delphi TC480 comes with mounting hardware included to facilitate installation. Since the control arm is not greaseable and does not include bushings, ensure the existing bushings are inspected and replaced if necessary. Proper torque specifications should be followed when securing the threaded ball joint stud and mounting hardware. This part is designed for the front left upper suspension position and is not adjustable, so alignment checks after installation are recommended.

Quality Assurance and Warranty

Delphi suspension components meet standard replacement grade requirements, providing reliable performance for light suspension applications. The TC480 control arm and ball joint assembly undergoes quality control to ensure fitment accuracy and durability. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.