The Delphi TC2138 Rear Right Upper Control Arm and Ball Joint Assembly is engineered to restore the suspension system of Mercedes-Benz ML-Class vehicles, including ML320, ML350, ML430, ML500, and ML55 AMG models. This assembly is designed to provide precise steering and handling by connecting the rear right upper control arm to the wheel hub assembly. Constructed from high-strength aluminum, the control arm offers a lightweight yet durable solution that resists corrosion and ensures long-term performance. The integrated ball joint features a press-in mounting type, facilitating straightforward installation and maintenance. Equipped with a greaseable, zinc-plated ball joint socket, the assembly allows for easy lubrication, reducing friction and extending the component's lifespan. The corrosion-resistant boot protects against contaminants, further enhancing durability. Designed to meet or exceed original equipment (OE) specifications, the Delphi TC2138 assembly undergoes rigorous testing to ensure reliability and performance. It withstands extreme temperatures ranging from -40°C to over 120°C and is exposed to 720 hours of salt spray, ensuring it can handle various environmental conditions. This assembly is compatible with multiple Mercedes-Benz ML-Class models, including ML320, ML350, ML430, ML500, and ML55 AMG, covering model years 1998 through 2005. By choosing the Delphi TC2138 assembly, fleet operators can ensure their vehicles maintain optimal suspension performance, leading to improved handling, reduced maintenance costs, and enhanced driver safety.