Explore Toyota 4 Runner Upper Ball Joint Replacement. Order Toyota 4 Runner Upper Ball Joints & Toyota 4 Runner Ball Joints Replacement Cost. Maintaining the upper ball joints of your Toyota 4Runner is crucial for ensuring a smooth and safe ride. Regular lubrication and inspection for wear can significantly extend their lifespan, while symptoms like uneven tire wear, clunking noises, or a wandering steering wheel may signal the need for replacement. When choosing replacements, consider OEM equivalents or upgraded options with superior durability features, such as dust covers and grease fittings. The upper ball joints serve as a pivot between the wheels and suspension, allowing for precise steering and handling. For a successful installation, always adhere to the manufacturer's torque specifications and use high-quality materials to maintain the integrity of your vehicle's suspension system. Shop with us for reliable parts that promise a seamless fit and enduring performance.