Raybestos 502-1084 Professional Grade Control Arm and Ball Joint Assembly Constructed to meet the design and performance of the original part Designed with premium quality materials for exceptional performance, reliability and peace of mind The patented advanced technology, low-friction synthethic bearing ball joint with permanently attached polyurethane boot offers less friction, tighter tolerances and the ultimate protection against contamination for smooth, long-lasting performance Tough, durable bushing materials withstand environmental contamination and high temperature use