ACDelco 45D3389 Front Driver Side Lower Suspension Control Arm and Ball Joint Assembly

The ACDelco 45D3389 is a front driver side lower suspension control arm and ball joint assembly engineered as a high-quality replacement for worn or damaged suspension components. Control arms serve as the critical link between a vehicle's steering knuckle and its frame, allowing the suspension to travel vertically while keeping wheel movement synchronized with the vehicle body for stable, controlled handling.

Built under the ACDelco Gold (Professional) line, this assembly is manufactured to meet strict specifications for fit, form, and function — making it a reliable choice for a wide range of vehicle applications. Each unit undergoes impact, wear, and fatigue testing to validate durability under real-world driving conditions.

Key Features:

• Corrosion-resistant coating for extended service life in harsh environments
• Greaseable ball joint (where applicable) allows fresh lubricant to flush contaminants from the assembly, reducing wear and extending joint life
• CNC-machined housing for dimensional consistency and reliable fit
• Lightweight construction designed to meet application-specific weight and performance targets
• Impact, wear, and fatigue tested to help ensure quality and long-term durability
• Manufactured to meet or exceed OE specifications for fit, form, and function

Cross-Reference Part Numbers: Dorman 520-971 | MOOG RK620147 | Delphi TC2189 | Beck/Arnley 101-6145 | Mevotech MS70101 | Carquest CA414B | OEM Porsche: 95534101733 / 95534101750 | OEM VW/Audi: 7L0407151C / 7L0407151E / 7L0407151H

Backed by ACDelco's professional-grade quality standards and GM's engineering heritage, the 45D3389 delivers the confidence of a well-tested replacement part for suspension restoration and repair.