Delphi TC3891 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Delphi Suspension Control Arm and Ball Joint Assembly Overview

The Delphi TC3891 suspension control arm and ball joint assembly is designed specifically for the front left upper position on BMW X5 and X6 models. Engineered with durable aluminum construction and pre-greased components, this assembly offers reliable performance and precise fitment for your vehicle's suspension system.

• Pre-greased for immediate installation
• Includes rubber bushings for vibration dampening
• Machined ball joint mounting for secure fit
• Aluminum control arm with casting and forging construction
• Compatible with BMW X5 and X6 front left upper suspension

Durable Construction and Design Features

The Delphi TC3891 control arm is crafted from high-quality aluminum using a combination of casting and forging processes to ensure strength and lightweight performance. The gray-colored control arm measures approximately 12.283 inches in length and 3.362 inches in width, providing a precise fit for the front left upper suspension position. The assembly includes rubber bushings that help absorb road vibrations and reduce noise, contributing to a smoother ride. The ball joint mounting is machined for accuracy, ensuring secure attachment and consistent steering response. This part is pre-greased, eliminating the need for additional lubrication during installation.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is compatible with BMW X5 and X6 models, specifically designed for the front left upper position. The part number TC3891 ensures you receive the correct replacement component tailored to your vehicle's suspension system requirements.

• Replaces worn or damaged front left upper suspension control arm
• Addresses issues with steering instability or uneven tire wear
• Corrects suspension noise caused by deteriorated bushings
• Improves vehicle handling and alignment consistency
• Restores proper suspension geometry after impact or wear

Installation Notes and Tips

Installation of the Delphi TC3891 control arm requires standard suspension tools and mechanical knowledge. Since the part comes pre-greased and includes bushings, no additional lubrication is necessary. Mounting hardware is not included, so reusing existing bolts or purchasing new hardware separately is recommended. Ensure proper torque specifications are followed to maintain safety and performance. Alignment check after installation is advised to optimize handling and tire life.

Quality Assurance and Warranty

Delphi suspension components meet industry standards for durability and performance. The TC3891 assembly is classified as a standard replacement grade part, designed to restore original suspension function. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects to provide confidence in product reliability.