Delphi TC5550 Suspension Control Arm and Ball Joint Assembly - Front Left

Delphi Suspension Control Arm and Ball Joint Assembly Overview

The Delphi TC5550 suspension control arm and ball joint assembly is designed specifically for the front left position of Infiniti FX35 and FX45 models. Engineered with durable steel construction and pre-greased components, this assembly offers reliable suspension performance for light suspension grade applications.

• Pre-greased for immediate use
• Includes rubber bushings for vibration dampening
• Steel control arm with casting and forged construction
• Press-in ball joint with threaded stud (16mm diameter)
• Standard replacement grade for front left suspension
• Black finish for corrosion resistance
• Includes mounting hardware
• Single mounting hole with 41.7mm diameter

Detailed Product Description

The Delphi TC5550 control arm and ball joint assembly is crafted from high-quality steel using a combination of casting and forging processes to ensure strength and durability. 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 features a press-in mounting type with a threaded stud measuring 16mm in diameter, providing secure attachment and reliable steering control. This assembly is designed for light suspension grade use and is finished in black to resist corrosion and wear over time.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is compatible with the following Infiniti models:

• Infiniti FX35 (front left position)
• Infiniti FX45 (front left position)

It is intended as a standard replacement part to restore proper suspension geometry and handling characteristics.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Loose or failing ball joints leading to uneven tire wear
• Corroded or weakened control arm structure affecting suspension alignment
• Excessive vibration or noise from front left suspension components
• Reduced handling performance due to suspension component wear

Installation Notes and Tips

Installation of the Delphi TC5550 assembly requires removal of the existing front left control arm and ball joint. Since the ball joint is press-in type with a threaded stud, proper tools for pressing and securing the ball joint are necessary. The assembly comes pre-greased and includes rubber bushings, so no additional lubrication is required. Verify torque specifications for mounting hardware and ball joint stud to ensure safe and secure installation. This part is not adjustable and designed for direct replacement.

Quality Assurance and Warranty

Delphi suspension components meet industry standards for durability and performance. The TC5550 assembly is manufactured to provide consistent fitment and function for Infiniti FX35 and FX45 vehicles. This part is classified as a standard replacement grade component. Warranty coverage details should be confirmed with the point of purchase or Delphi directly.