Shop Ford Mustang Replace upper and lower ball joint. Discover Ford Mustang Suspension ball joint & Ford Mustang Upper ball joint. Maintaining the upper ball joint in your Ford Mustang is crucial for seamless steering and prolonged suspension system health. Regular lubrication and inspection for wear can help extend its lifespan, with signs such as uneven tire wear or clunking noises indicating the need for replacement. When selecting a new upper ball joint, opt for either a sealed or greaseable type; sealed joints offer a maintenance-free option while greaseable joints allow for regular maintenance, potentially extending their life. Ensure you choose a high-quality material like hardened steel for durability. For DIY enthusiasts, using a press tool during installation will ensure a secure and proper fit, enhancing your Mustang's performance and safety.