Compatible Vehicles: 2006 to 2010 Ford Explorer 2006 to 2010 Mercury Mountaineer 2007 to 2010 Ford Explorer Sport Trac Position and Material: Rear upper control arm, fits either driver or passenger side Durable rubber bushing for reliable performance and vibration reduction Part Numbers and OEM Replacement: Interchange part numbers: CMS401181, 524743, 6L2Z5500B Direct replacement for OE number: 6L2Z5500B Recommended Use and Quantity: Designed as an OE replacement for precise fit and function Sold individually Key Benefits: Ensures proper wheel alignment and handling stability Restores vehicle suspension performance for a smoother, more controlled ride quality rubber bushing minimizes noise and absorbs road impact Practical Use Scenarios: 1. Ideal for replacing worn or damaged rear upper control arms to prevent uneven tire wear and improve steering responsiveness. 2. Suitable for suspension repairs after detecting excessive movement, clunking noises, or poor alignment during driving. 3. for routine maintenance on vehicles exposed to rough roads or heavy loads, prolonging suspension service life. This OE replacement rear upper control arm provides dependable compatibility with listed Ford and Mercury models, offering precise fit and lasting performance. Built with a robust rubber bushing, it effectively absorbs shocks and vibrations, contributing to a smooth and safe driving experience.