Delphi TC3578 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward

Delphi Suspension Control Arm and Ball Joint Assembly Overview

The Delphi TC3578 suspension control arm and ball joint assembly is engineered for front left lower rearward positioning on select BMW xDrive models. Designed with durable aluminum construction and natural rubber bushings, this component supports precise suspension movement and vehicle stability.

Key Features of Delphi TC3578 Control Arm

• Constructed from lightweight, forged aluminum for strength and corrosion resistance
• Includes natural rubber bushings to absorb road vibrations and reduce noise
• Machined ball joint mounting with a threaded stud for secure fitment
• Standard replacement grade suitable for light suspension applications
• Compatible with multiple BMW xDrive models including 228i, 330i, 335i, and 440i
• Silver finish with a maximum control arm length of 346 mm and width of 111 mm
• Mounting hardware included for straightforward installation

Detailed Product Description

The Delphi TC3578 suspension control arm and ball joint assembly is designed to meet OEM specifications for front left lower rearward suspension on BMW vehicles equipped with xDrive. Its aluminum casting and forging provide a balance of lightweight performance and structural integrity. The natural rubber bushings help maintain ride comfort by isolating road shocks and minimizing vibrations. The machined ball joint mounting and threaded stud ensure a precise and secure connection to the suspension system. This assembly is intended for light suspension grade use and is not greaseable or pre-greased, reflecting its maintenance-free design.

Common Applications and Problem Resolution

• Replaces worn or damaged front left lower rearward suspension control arms on BMW 228i xDrive and 330i xDrive models
• Addresses issues such as uneven tire wear caused by faulty control arm bushings
• Eliminates clunking noises from loose or worn ball joints in the front suspension
• Restores proper wheel alignment and handling stability
• Improves overall suspension response and vehicle safety

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Remove the old control arm assembly carefully, noting the position of bushings and ball joint connections. The Delphi TC3578 comes with mounting hardware to facilitate installation. Torque all fasteners to manufacturer specifications to maintain suspension geometry. Since this part is not greaseable, no additional lubrication is required during installation.

Quality Assurance and Warranty

Delphi suspension components are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The TC3578 control arm assembly is a standard replacement grade part backed by Delphi's quality control processes. Warranty coverage details should be confirmed with the point of purchase or Delphi directly.